Fix spelling errors. (#28657)

Fix the spelling errors in the dartdocs for the framework.

There are no functionality changes here, just documentation fixes.

dev/tools/gen_keycodes/data/keyboard_key.tmpl

@@ -191,14 +191,14 @@ class LogicalKeyboardKey extends Diagnosticable {
     return (codeUnit <= 0x1f && codeUnit >= 0x00) || (codeUnit >= 0x7f && codeUnit <= 0x9f);
   }
 
-  /// Returns true if the [keyId] of this object is one that is autogenerated by
+  /// Returns true if the [keyId] of this object is one that is auto-generated by
   /// Flutter.
   ///
-  /// Autogenerated key IDs are generated in response to platform key codes
+  /// Auto-generated key IDs are generated in response to platform key codes
   /// which Flutter doesn't recognize, and their IDs shouldn't be used in a
   /// persistent way.
   ///
-  /// Autogenerated IDs should be a rare occurrence: Flutter supports most keys.
+  /// Auto-generated IDs should be a rare occurrence: Flutter supports most keys.
   ///
   /// Keys that generate Unicode characters (even if unknown to Flutter) will
   /// not return true for `isAutogenerated`, since they will be assigned a
@@ -209,10 +209,10 @@ class LogicalKeyboardKey extends Diagnosticable {
   /// produced on until Flutter adds support for recognizing it.
   ///
   /// So, hypothetically, if Android added a new key code of 0xffff,
-  /// representing a new "do what I mean" key, then the autogenerated code would
-  /// be 0x1020000ffff, but once Flutter added the "doWhatIMean" key to the
-  /// definitions below, the new code would be 0x0020000ffff for all platforms
-  /// that had a "do what I mean" key from then on.
+  /// representing a new "do what I mean" key, then the auto-generated code
+  /// would be 0x1020000ffff, but once Flutter added the "doWhatIMean" key to
+  /// the definitions below, the new code would be 0x0020000ffff for all
+  /// platforms that had a "do what I mean" key from then on.
   bool get isAutogenerated => (keyId & autogeneratedMask) != 0;
 
   /// Mask for the 32-bit value portion of the key code.
@@ -226,7 +226,7 @@ class LogicalKeyboardKey extends Diagnosticable {
   /// This is used by platform-specific code to generate Flutter key codes.
   static const int platformMask = 0x0FF00000000;
 
-  /// Mask for the autogenerated bit portion of the key code.
+  /// Mask for the auto-generated bit portion of the key code.
   ///
   /// This is used by platform-specific code to generate new Flutter key codes
   /// for keys which are not recognized.

packages/flutter/lib/src/animation/tween.dart

@@ -170,7 +170,7 @@ class _ChainedEvaluation<T> extends Animatable<T> {
 /// recreate all the objects in the chain from the [AnimationController] to the
 /// final [Tween].
 ///
-/// If a [Tween]'s values are never changed, however, a further optimisation can
+/// If a [Tween]'s values are never changed, however, a further optimization can
 /// be applied: the object can be stored in a `static final` variable, so that
 /// the exact same instance is used whenever the [Tween] is needed. This is
 /// preferable to creating an identical [Tween] afresh each time a [State.build]

packages/flutter/lib/src/animation/tween_sequence.dart

@@ -121,7 +121,7 @@ class TweenSequenceItem<T> {
   /// {@end-tool}
   final Animatable<T> tween;
 
-  /// An abitrary value that indicates the relative percentage of a
+  /// An arbitrary value that indicates the relative percentage of a
   /// [TweenSequence] animation's duration when [tween] will be used.
   ///
   /// The percentage for an individual item is the item's weight divided

packages/flutter/lib/src/cupertino/icons.dart

@@ -446,7 +446,7 @@ class CupertinoIcons {
   ///  * [add_circled], which is similar, but not filled in.
   static const IconData add_circled_solid = IconData(0xf48b, fontFamily: iconFont, fontPackage: iconFontPackage);
 
-  /// A gear with eigth cogs. This icon is not filled in.
+  /// A gear with eight cogs. This icon is not filled in.
   ///
   /// See also:
   ///
@@ -455,7 +455,7 @@ class CupertinoIcons {
   ///  * [settings], which is another cogwheel with a different design.
   static const IconData gear = IconData(0xf43c, fontFamily: iconFont, fontPackage: iconFontPackage);
 
-  /// A gear with eigth cogs. This icon is filled in.
+  /// A gear with eight cogs. This icon is filled in.
   ///
   /// See also:
   ///
@@ -504,14 +504,14 @@ class CupertinoIcons {
   ///  * [play_arrow], which is similar, but not filled in.
   static const IconData play_arrow_solid = IconData(0xf488, fontFamily: iconFont, fontPackage: iconFontPackage);
 
-  /// Two verticale rectangles. This icon is not filled in.
+  /// Two vertical rectangles. This icon is not filled in.
   ///
   /// See also:
   ///
   ///  * [pause_solid], which is similar, but filled in.
   static const IconData pause = IconData(0xf477, fontFamily: iconFont, fontPackage: iconFontPackage);
 
-  /// Two verticale rectangles. This icon is filled in.
+  /// Two vertical rectangles. This icon is filled in.
   ///
   /// See also:
   ///
@@ -624,22 +624,22 @@ class CupertinoIcons {
   ///  * [time_solid], which is similar, but without dots on the clock face.
   static const IconData clock_solid = IconData(0xf4bf, fontFamily: iconFont, fontPackage: iconFontPackage);
 
-  /// A circle with with a 90 degree angle shape in the center, resembeling a clock with hands showing 09:00.
+  /// A circle with with a 90 degree angle shape in the center, resembling a clock with hands showing 09:00.
   ///
   /// See also:
   ///
   ///  * [time_solid], which is similar, but filled in.
-  ///  * [clock], which is similar, but with dots on the clockface.
-  ///  * [clock_solid], which is similar, but filled in and with dots on the clockface.
+  ///  * [clock], which is similar, but with dots on the clock face.
+  ///  * [clock_solid], which is similar, but filled in and with dots on the clock face.
   static const IconData time = IconData(0xf402, fontFamily: iconFont, fontPackage: iconFontPackage);
 
-  /// A filled in circle with with a 90 degree angle shape in the center, resembeling a clock with hands showing 09:00.
+  /// A filled in circle with with a 90 degree angle shape in the center, resembling a clock with hands showing 09:00.
   ///
   /// See also:
   ///
   ///  * [time], which is similar, but not filled in.
-  ///  * [clock], which is similar, but not filled in and with dots on the clockface.
-  ///  * [clock_solid], which is similar, but with dots on the clockface.
+  ///  * [clock], which is similar, but not filled in and with dots on the clock face.
+  ///  * [clock_solid], which is similar, but with dots on the clock face.
   static const IconData time_solid = IconData(0xf403, fontFamily: iconFont, fontPackage: iconFontPackage);
 
   /// An unlocked padlock.

packages/flutter/lib/src/cupertino/route.dart

@@ -114,7 +114,7 @@ class CupertinoPageRoute<T> extends PageRoute<T> {
 
   /// A title string for this route.
   ///
-  /// Used to autopopulate [CupertinoNavigationBar] and
+  /// Used to auto-populate [CupertinoNavigationBar] and
   /// [CupertinoSliverNavigationBar]'s `middle`/`largeTitle` widgets when
   /// one is not manually supplied.
   final String title;

packages/flutter/lib/src/cupertino/text_field.dart

@@ -126,7 +126,7 @@ enum OverlayVisibilityMode {
 class CupertinoTextField extends StatefulWidget {
   /// Creates an iOS-style text field.
   ///
-  /// To provide a prefilled text entry, pass in a [TextEditingController] with
+  /// To provide a pre-filled text entry, pass in a [TextEditingController] with
   /// an initial value to the [controller] parameter.
   ///
   /// To provide a hint placeholder text that appears when the text entry is

packages/flutter/lib/src/cupertino/text_theme.dart

@@ -148,7 +148,7 @@ class CupertinoTextThemeData extends Diagnosticable {
   }
 
   final TextStyle _navActionTextStyle;
-  /// Typography of interative text content in navigation bars.
+  /// Typography of interactive text content in navigation bars.
   TextStyle get navActionTextStyle {
     return _navActionTextStyle ?? _kDefaultActionTextStyle.copyWith(
       color: _primaryColor,

packages/flutter/lib/src/foundation/basic_types.dart

@@ -89,7 +89,7 @@ typedef AsyncValueGetter<T> = Future<T> Function();
 ///
 ///  * It requires more memory than a non-caching iterator.
 ///
-///  * the [length] and [toList] properties immediately precache the
+///  * The [length] and [toList] properties immediately pre-cache the
 ///    entire list. Using these fields therefore loses the laziness of
 ///    the iterable. However, it still gets cached.
 ///

packages/flutter/lib/src/foundation/binding.dart

@@ -256,7 +256,7 @@ abstract class BindingBase {
   /// This method is called by [reassembleApplication] to actually cause the
   /// application to reassemble, e.g. after a hot reload.
   ///
-  /// Bindings are expected to use this method to reregister anything that uses
+  /// Bindings are expected to use this method to re-register anything that uses
   /// closures, so that they do not keep pointing to old code, and to flush any
   /// caches of previously computed values, in case the new code would compute
   /// them differently. For example, the rendering layer triggers the entire

packages/flutter/lib/src/foundation/diagnostics.dart

@@ -2380,7 +2380,7 @@ abstract class DiagnosticableTree extends Diagnosticable {
   ///
   /// `joiner` specifies the string which is place between each part obtained
   /// from [debugFillProperties]. Passing a string such as `'\n '` will result
-  /// in a multiline string that indents the properties of the object below its
+  /// in a multi-line string that indents the properties of the object below its
   /// name (as per [toString]).
   ///
   /// `minLevel` specifies the minimum [DiagnosticLevel] for properties included

packages/flutter/lib/src/foundation/platform.dart

@@ -84,7 +84,7 @@ TargetPlatform get defaultTargetPlatform {
 /// (such as [ThemeData.platform] in the material library) instead.
 ///
 /// Setting [debugDefaultTargetPlatformOverride] (as opposed to, say,
-/// [ThemeData.platform]) will cause unexpected and undesireable effects. For
+/// [ThemeData.platform]) will cause unexpected and undesirable effects. For
 /// example, setting this to [TargetPlatform.iOS] when the application is
 /// running on Android will cause the TalkBack accessibility tool on Android to
 /// be confused because it would be receiving data intended for iOS VoiceOver.

packages/flutter/lib/src/foundation/unicode.dart

@@ -68,7 +68,7 @@ class Unicode {
   /// Treat the following text as isolated and in the direction of its first
   /// strong directional character that is not inside a nested isolate.
   ///
-  /// This essentially "autodetects" the directionality of the text. It is not
+  /// This essentially "auto-detects" the directionality of the text. It is not
   /// 100% reliable. For example, Arabic text that starts with an English quote
   /// will be detected as LTR, not RTL, which will lead to the text being in a
   /// weird order.

packages/flutter/lib/src/material/app.dart

@@ -213,7 +213,7 @@ class MaterialApp extends StatefulWidget {
   /// {@macro flutter.widgets.widgetsApp.localizationsDelegates}
   ///
   /// Internationalized apps that require translations for one of the locales
-  /// listed in [GlobalMaterialLocalizations] should specify this paramter
+  /// listed in [GlobalMaterialLocalizations] should specify this parameter
   /// and list the [supportedLocales] that the application can handle.
   ///
   /// ```dart

packages/flutter/lib/src/material/app_bar.dart

@@ -256,7 +256,7 @@ class AppBar extends StatefulWidget implements PreferredSizeWidget {
   /// {@end-tool}
   final List<Widget> actions;
 
-  /// This widget is stacked behind the toolbar and the tabbar. It's height will
+  /// This widget is stacked behind the toolbar and the tab bar. It's height will
   /// be the same as the app bar's overall height.
   ///
   /// A flexible space isn't actually flexible unless the [AppBar]'s container
@@ -332,7 +332,7 @@ class AppBar extends StatefulWidget implements PreferredSizeWidget {
 
   /// Whether this app bar is being displayed at the top of the screen.
   ///
-  /// If true, the appbar's toolbar elements and [bottom] widget will be
+  /// If true, the app bar's toolbar elements and [bottom] widget will be
   /// padded on top by the height of the system status bar. The layout
   /// of the [flexibleSpace] is not affected by the [primary] property.
   final bool primary;
@@ -611,7 +611,7 @@ class _FloatingAppBar extends StatefulWidget {
 }
 
 // A wrapper for the widget created by _SliverAppBarDelegate that starts and
-/// stops the floating appbar's snap-into-view or snap-out-of-view animation.
+// stops the floating app bar's snap-into-view or snap-out-of-view animation.
 class _FloatingAppBarState extends State<_FloatingAppBar> {
   ScrollPosition _position;
 
@@ -962,7 +962,7 @@ class SliverAppBar extends StatefulWidget {
   /// {@end-tool}
   final List<Widget> actions;
 
-  /// This widget is stacked behind the toolbar and the tabbar. It's height will
+  /// This widget is stacked behind the toolbar and the tab bar. It's height will
   /// be the same as the app bar's overall height.
   ///
   /// Typically a [FlexibleSpaceBar]. See [FlexibleSpaceBar] for details.

packages/flutter/lib/src/material/bottom_sheet.dart

@@ -84,7 +84,7 @@ class BottomSheet extends StatefulWidget {
   final WidgetBuilder builder;
 
   /// If true, the bottom sheet can dragged up and down and dismissed by swiping
-  /// downards.
+  /// downwards.
   ///
   /// Default is true.
   final bool enableDrag;

packages/flutter/lib/src/material/button_theme.dart

@@ -633,7 +633,7 @@ class ButtonThemeData extends Diagnosticable {
   /// Returns the button's [MaterialButton.highlightElevation] if it is non-null.
   ///
   /// If button is a [FlatButton] or an [OutlineButton] then the highlight
-  /// elevation is 0.0, otherise the highlight elevation is 8.0.
+  /// elevation is 0.0, otherwise the highlight elevation is 8.0.
   double getHighlightElevation(MaterialButton button) {
     if (button.highlightElevation != null)
       return button.highlightElevation;
@@ -649,7 +649,7 @@ class ButtonThemeData extends Diagnosticable {
   ///
   /// Returns the button's [MaterialButton.elevation] if it is non-null.
   ///
-  /// Otheriwse the disabled elevation is 0.0.
+  /// Otherwise the disabled elevation is 0.0.
   double getDisabledElevation(MaterialButton button) {
     if (button.disabledElevation != null)
       return button.disabledElevation;

packages/flutter/lib/src/material/chip.dart

@@ -254,7 +254,8 @@ abstract class SelectableChipAttributes {
   /// Must not be null. Defaults to false.
   bool get selected;
 
-  /// Called when the chip should change between selected and deselected states.
+  /// Called when the chip should change between selected and de-selected
+  /// states.
   ///
   /// When the chip is tapped, then the [onSelected] callback, if set, will be
   /// applied to `!selected` (see [selected]).

packages/flutter/lib/src/material/color_scheme.dart

@@ -171,35 +171,35 @@ class ColorScheme extends Diagnosticable {
 
   /// A color that's clearly legible when drawn on [primary].
   ///
-  /// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [primary]
+  /// To ensure that an app is accessible, a contrast ratio of 4.5:1 for [primary]
   /// and [onPrimary] is recommended. See
   /// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
   final Color onPrimary;
 
   /// A color that's clearly legible when drawn on [secondary].
   ///
-  /// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [secondary]
+  /// To ensure that an app is accessible, a contrast ratio of 4.5:1 for [secondary]
   /// and [onSecondary] is recommended. See
   /// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
   final Color onSecondary;
 
   /// A color that's clearly legible when drawn on [surface].
   ///
-  /// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [surface]
+  /// To ensure that an app is accessible, a contrast ratio of 4.5:1 for [surface]
   /// and [onSurface] is recommended. See
   /// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
   final Color onSurface;
 
   /// A color that's clearly legible when drawn on [background].
   ///
-  /// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [background]
+  /// To ensure that an app is accessible, a contrast ratio of 4.5:1 for [background]
   /// and [onBackground] is recommended. See
   /// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
   final Color onBackground;
 
   /// A color that's clearly legible when drawn on [error].
   ///
-  /// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [error]
+  /// To ensure that an app is accessible, a contrast ratio of 4.5:1 for [error]
   /// and [onError] is recommended. See
   /// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
   final Color onError;

packages/flutter/lib/src/material/dialog.dart

@@ -285,7 +285,7 @@ class AlertDialog extends StatelessWidget {
   /// The semantic label of the dialog used by accessibility frameworks to
   /// announce screen transitions when the dialog is opened and closed.
   ///
-  /// If this label is not provided, a semantic label will be infered from the
+  /// If this label is not provided, a semantic label will be inferred from the
   /// [title] if it is not null.  If there is no title, the label will be taken
   /// from [MaterialLocalizations.alertDialogLabel].
   ///
@@ -570,7 +570,7 @@ class SimpleDialog extends StatelessWidget {
   /// The semantic label of the dialog used by accessibility frameworks to
   /// announce screen transitions when the dialog is opened and closed.
   ///
-  /// If this label is not provided, a semantic label will be infered from the
+  /// If this label is not provided, a semantic label will be inferred from the
   /// [title] if it is not null.  If there is no title, the label will be taken
   /// from [MaterialLocalizations.dialogLabel].
   ///

packages/flutter/lib/src/material/expand_icon.dart

@@ -13,7 +13,7 @@ import 'material_localizations.dart';
 import 'theme.dart';
 
 /// A widget representing a rotating expand/collapse button. The icon rotates
-/// 180 deg when pressed, then reverts the animation on a second press.
+/// 180 degrees when pressed, then reverts the animation on a second press.
 /// The underlying icon is [Icons.expand_more].
 ///
 /// The expand icon does not include a semantic label for accessibility. In

packages/flutter/lib/src/material/flat_button.dart

@@ -35,7 +35,7 @@ import 'theme_data.dart';
 /// trying to change the button's [color] and it is not having any effect, check
 /// that you are passing a non-null [onPressed] handler.
 ///
-/// Flat buttons have a minimum size of 88.0 by 36.0 which can be overidden
+/// Flat buttons have a minimum size of 88.0 by 36.0 which can be overridden
 /// with [ButtonTheme].
 ///
 /// The [clipBehavior] argument must not be null.

packages/flutter/lib/src/material/floating_action_button.dart

@@ -184,7 +184,7 @@ class FloatingActionButton extends StatelessWidget {
   /// If this is set to null, the button will be disabled.
   final VoidCallback onPressed;
 
-  /// The z-coordinate at which to place this button releative to its parent.
+  /// The z-coordinate at which to place this button relative to its parent.
   ///
   /// This controls the size of the shadow below the floating action button.
   ///

packages/flutter/lib/src/material/input_decorator.dart

@@ -2541,7 +2541,7 @@ class InputDecoration {
   /// If provided, this replaces the semantic label of the [counterText].
   final String semanticCounterText;
 
-  /// Typically set to true when the [InputDecorator] contains a multiline
+  /// Typically set to true when the [InputDecorator] contains a multi-line
   /// [TextField] ([TextField.maxLines] is null or > 1) to override the default
   /// behavior of aligning the label with the center of the [TextField].
   ///
@@ -3135,7 +3135,7 @@ class InputDecorationTheme extends Diagnosticable {
   ///    rounded rectangle around the input decorator's container.
   final InputBorder border;
 
-  /// Typically set to true when the [InputDecorator] contains a multiline
+  /// Typically set to true when the [InputDecorator] contains a multi-line
   /// [TextField] ([TextField.maxLines] is null or > 1) to override the default
   /// behavior of aligning the label with the center of the [TextField].
   final bool alignLabelWithHint;

packages/flutter/lib/src/material/material.dart

@@ -149,7 +149,7 @@ abstract class MaterialInkController {
 ///
 /// See also:
 ///
-///  * [MergeableMaterial], a piece of material that can split and remerge.
+///  * [MergeableMaterial], a piece of material that can split and re-merge.
 ///  * [Card], a wrapper for a [Material] of [type] [MaterialType.card].
 ///  * <https://material.io/design/>
 class Material extends StatefulWidget {

packages/flutter/lib/src/material/outline_button.dart

@@ -40,7 +40,7 @@ const Duration _kElevationDuration = Duration(milliseconds: 75);
 /// If you want an ink-splash effect for taps, but don't want to use a button,
 /// consider using [InkWell] directly.
 ///
-/// Outline buttons have a minimum size of 88.0 by 36.0 which can be overidden
+/// Outline buttons have a minimum size of 88.0 by 36.0 which can be overridden
 /// with [ButtonTheme].
 ///
 /// See also:

packages/flutter/lib/src/material/raised_button.dart

@@ -28,7 +28,7 @@ import 'theme_data.dart';
 /// If you want an ink-splash effect for taps, but don't want to use a button,
 /// consider using [InkWell] directly.
 ///
-/// Raised buttons have a minimum size of 88.0 by 36.0 which can be overidden
+/// Raised buttons have a minimum size of 88.0 by 36.0 which can be overridden
 /// with [ButtonTheme].
 ///
 /// {@tool snippet --template=stateless_widget_scaffold}

packages/flutter/lib/src/material/scaffold.dart

@@ -51,7 +51,7 @@ enum _ScaffoldSlot {
 /// The geometry of the [Scaffold] after all its contents have been laid out
 /// except the [FloatingActionButton].
 ///
-/// The [Scaffold] passes this prelayout geometry to its
+/// The [Scaffold] passes this pre-layout geometry to its
 /// [FloatingActionButtonLocation], which produces an [Offset] that the
 /// [Scaffold] uses to position the [FloatingActionButton].
 ///

packages/flutter/lib/src/material/text_field.dart

@@ -278,7 +278,7 @@ class TextField extends StatefulWidget {
   ///
   /// If set, a character counter will be displayed below the
   /// field showing how many characters have been entered. If set to a number
-  /// greather than 0, it will also display the maximum number allowed. If set
+  /// greater than 0, it will also display the maximum number allowed. If set
   /// to [TextField.noMaxLength] then only the current character count is displayed.
   ///
   /// After [maxLength] characters have been input, additional input

packages/flutter/lib/src/material/text_theme.dart

@@ -16,7 +16,7 @@ import 'typography.dart';
 /// To obtain the current text theme, call [Theme.of] with the current
 /// [BuildContext] and read the [ThemeData.textTheme] property.
 ///
-/// The Material Design typography scheme was signficantly changed in the
+/// The Material Design typography scheme was significantly changed in the
 /// current (2018) version of the specification
 /// (https://material.io/design/typography).
 ///
@@ -43,7 +43,7 @@ import 'typography.dart';
 ///
 /// The [TextTheme] API is based on the original material (2014)
 /// design spec, which used different text style names. For backwards
-/// compatability's sake, this API continues to use the original
+/// compatibility's sake, this API continues to use the original
 /// names. The table below should help with understanding the API in
 /// terms of the 2018 material spec.
 ///

packages/flutter/lib/src/painting/image_provider.dart

@@ -322,7 +322,7 @@ abstract class ImageProvider<T> {
   /// {@tool sample}
   ///
   /// The following sample code shows how an image loaded using the [Image]
-  /// widget can be evicted using a [NetworkImage] with a matching url.
+  /// widget can be evicted using a [NetworkImage] with a matching URL.
   ///
   /// ```dart
   /// class MyWidget extends StatelessWidget {

packages/flutter/lib/src/painting/image_stream.dart

@@ -194,8 +194,8 @@ class ImageStream extends Diagnosticable {
   /// Returns an object which can be used with `==` to determine if this
   /// [ImageStream] shares the same listeners list as another [ImageStream].
   ///
-  /// This can be used to avoid unregistering and reregistering listeners after
-  /// calling [ImageProvider.resolve] on a new, but possibly equivalent,
+  /// This can be used to avoid un-registering and re-registering listeners
+  /// after calling [ImageProvider.resolve] on a new, but possibly equivalent,
   /// [ImageProvider].
   ///
   /// The key may change once in the lifetime of the object. When it changes, it

packages/flutter/lib/src/painting/strut_style.dart

@@ -8,7 +8,7 @@ import 'basic_types.dart';
 import 'text_style.dart';
 
 /// Defines the strut, which sets the minimum height a line can be
-/// relative to the baseline. Strut applies to all lines in the pararaph.
+/// relative to the baseline. Strut applies to all lines in the paragraph.
 ///
 /// Strut is a feature that allows minimum line heights to be set. The effect is as
 /// if a zero width space was included at the beginning of each line in the
@@ -57,16 +57,17 @@ import 'text_style.dart';
 ///
 /// Omitted or null properties will take the default values specified below:
 ///
-///  * [fontFamily]: the name of the font to use when calcualting the strut (e.g., Roboto).
-///    No glyphs from the font will be drawn and the font will be used purely for metrics.
+///  * [fontFamily]: the name of the font to use when calculating the strut
+///    (e.g., Roboto). No glyphs from the font will be drawn and the font will
+///    be used purely for metrics.
 ///
 ///  * [fontFamilyFallback]: an ordered list of font family names that will be searched for when
 ///    the font in [fontFamily] cannot be found. When all specified font families have been
 ///    exhausted an no match was found, the default platform font will be used.
 ///
-///  * [fontSize]: the size of the ascent plus descent in logical pixels. This is also
-///    used as the basis of the custom leading caluclation. This value cannot
-///    be negative.
+///  * [fontSize]: the size of the ascent plus descent in logical pixels. This
+///    is also used as the basis of the custom leading calculation. This value
+///    cannot be negative.
 ///    Default is 14 logical pixels.
 ///
 ///  * [height]: the multiple of [fontSize] to multiply the ascent and descent by.
@@ -121,10 +122,10 @@ import 'text_style.dart';
 /// {@tool sample}
 /// Here, strut is used to absorb the additional line height in the second line.
 /// The strut [height] was defined as 1.5 (the default font size is 14), which
-/// caused all lines to be laid out taller than without strut. This extra space was
-/// able to accomodate the larger font size of `Second line!` without causing the line
-/// height to change for the second line only. All lines in this example are thus the
-/// same height (`14 * 1.5`).
+/// caused all lines to be laid out taller than without strut. This extra space
+/// was able to accommodate the larger font size of `Second line!` without
+/// causing the line height to change for the second line only. All lines in
+/// this example are thus the same height (`14 * 1.5`).
 ///
 /// ```dart
 /// const Text.rich(
@@ -335,8 +336,8 @@ class StrutStyle extends Diagnosticable {
     leading: 0.0,
   );
 
-  /// The name of the font to use when calcualting the strut (e.g., Roboto). If the
-  /// font is defined in a package, this will be prefixed with
+  /// The name of the font to use when calculating the strut (e.g., Roboto). If
+  /// the font is defined in a package, this will be prefixed with
   /// 'packages/package_name/' (e.g. 'packages/cool_fonts/Roboto'). The
   /// prefixing is done by the constructor when the `package` argument is
   /// provided.

packages/flutter/lib/src/painting/text_painter.dart

@@ -431,7 +431,7 @@ class TextPainter {
     return _isUtf16Surrogate(nextCodeUnit) ? offset + 2 : offset + 1;
   }
 
-  /// Returns the closest offset before `offset` at which the inout cursor can
+  /// Returns the closest offset before `offset` at which the input cursor can
   /// be positioned.
   int getOffsetBefore(int offset) {
     final int prevCodeUnit = _text.codeUnitAt(offset - 1);

packages/flutter/lib/src/painting/text_style.dart

@@ -444,9 +444,9 @@ class TextStyle extends Diagnosticable {
   /// This property is rarely set. Typically the locale used to select
   /// region-specific glyphs is defined by the text widget's [BuildContext]
   /// using `Localizations.localeOf(context)`. For example [RichText] defines
-  /// its locale this way. However, a rich text widget's [TextSpan]s could specify
-  /// text styles with different explicit locales in order to select different
-  /// region-specifc glyphs for each text span.
+  /// its locale this way. However, a rich text widget's [TextSpan]s could
+  /// specify text styles with different explicit locales in order to select
+  /// different region-specific glyphs for each text span.
   final Locale locale;
 
   /// The paint drawn as a foreground for the text.

packages/flutter/lib/src/rendering/list_wheel_viewport.dart

@@ -102,7 +102,7 @@ class ListWheelParentData extends ContainerBoxParentData<RenderBox> {
 ///
 /// 3. The **transformed cylindrical space viewport painting coordinates**.
 ///    Children from system 2 get their positions transformed into a cylindrical
-///    projection matrix instead of its cartesian offset with respect to the
+///    projection matrix instead of its Cartesian offset with respect to the
 ///    scroll offset.
 ///
 ///    Children in this coordinate system are painted.

packages/flutter/lib/src/rendering/proxy_box.dart

@@ -3506,7 +3506,7 @@ class RenderSemanticsAnnotations extends RenderProxyBox {
     markNeedsSemanticsUpdate();
   }
 
-  /// Whether decendants of this [RenderObject] should have their semantic
+  /// Whether descendants of this [RenderObject] should have their semantic
   /// information ignored.
   ///
   /// When this flag is set to true, all child semantics nodes are ignored.
@@ -4167,7 +4167,7 @@ class RenderSemanticsAnnotations extends RenderProxyBox {
   ///
   /// See also:
   ///
-  ///  * [CustomSemanticsAction], for an explaination of custom actions.
+  ///  * [CustomSemanticsAction], for an explanation of custom actions.
   Map<CustomSemanticsAction, VoidCallback> get customSemanticsActions => _customSemanticsActions;
   Map<CustomSemanticsAction, VoidCallback> _customSemanticsActions;
   set customSemanticsActions(Map<CustomSemanticsAction, VoidCallback> value) {
@@ -4580,7 +4580,7 @@ class RenderLeaderLayer extends RenderProxyBox {
 ///
 /// Hit testing on descendants of this render object will only work if the
 /// target position is within the box that this render object's parent considers
-/// to be hitable.
+/// to be hittable.
 ///
 /// See also:
 ///

packages/flutter/lib/src/rendering/sliver.dart

@@ -665,7 +665,7 @@ class SliverGeometry extends Diagnosticable {
   /// the rest of the values when constructing the [SliverGeometry] or call
   /// [RenderObject.layout] on its children since [RenderSliver.performLayout]
   /// will be called again on this sliver in the same frame after the
-  /// [SliverConstraints.scrollOffset] correction has ben applied, when the
+  /// [SliverConstraints.scrollOffset] correction has been applied, when the
   /// proper [SliverGeometry] and layout of its children can be computed.
   ///
   /// If the parent is also a [RenderSliver], it must propagate this value
@@ -677,7 +677,7 @@ class SliverGeometry extends Diagnosticable {
   /// [SliverConstraints.remainingCacheExtent].
   ///
   /// This value should be equal to or larger than the [layoutExtent] because
-  /// the sliver allways consumes at least the [layoutExtent] from the
+  /// the sliver always consumes at least the [layoutExtent] from the
   /// [SliverConstraints.remainingCacheExtent] and possibly more if it falls
   /// into the cache area of the viewport.
   ///

packages/flutter/lib/src/scheduler/binding.dart

@@ -408,15 +408,15 @@ mixin SchedulerBinding on BindingBase, ServicesBinding {
   ///
   /// If this is a one-off registration, ignore the `rescheduling` argument.
   ///
-  /// If this is a callback that will be reregistered each time it fires, then
-  /// when you reregister the callback, set the `rescheduling` argument to true.
-  /// This has no effect in release builds, but in debug builds, it ensures that
-  /// the stack trace that is stored for this callback is the original stack
-  /// trace for when the callback was _first_ registered, rather than the stack
-  /// trace for when the callback is reregistered. This makes it easier to track
-  /// down the original reason that a particular callback was called. If
-  /// `rescheduling` is true, the call must be in the context of a frame
-  /// callback.
+  /// If this is a callback that will be re-registered each time it fires, then
+  /// when you re-register the callback, set the `rescheduling` argument to
+  /// true. This has no effect in release builds, but in debug builds, it
+  /// ensures that the stack trace that is stored for this callback is the
+  /// original stack trace for when the callback was _first_ registered, rather
+  /// than the stack trace for when the callback is re-registered. This makes it
+  /// easier to track down the original reason that a particular callback was
+  /// called. If `rescheduling` is true, the call must be in the context of a
+  /// frame callback.
   ///
   /// Callbacks registered with this method can be canceled using
   /// [cancelFrameCallbackWithId].

packages/flutter/lib/src/semantics/binding.dart

@@ -44,7 +44,7 @@ mixin SemanticsBinding on BindingBase {
 
   /// The platform is requesting that animations be disabled or simplified.
   ///
-  /// This setting can be overriden for testing or debugging by setting
+  /// This setting can be overridden for testing or debugging by setting
   /// [debugSemanticsDisableAnimations].
   bool get disableAnimations {
     bool value = _accessibilityFeatures.disableAnimations;

packages/flutter/lib/src/services/keyboard_key.dart

@@ -191,14 +191,14 @@ class LogicalKeyboardKey extends Diagnosticable {
     return (codeUnit <= 0x1f && codeUnit >= 0x00) || (codeUnit >= 0x7f && codeUnit <= 0x9f);
   }
 
-  /// Returns true if the [keyId] of this object is one that is autogenerated by
+  /// Returns true if the [keyId] of this object is one that is auto-generated by
   /// Flutter.
   ///
-  /// Autogenerated key IDs are generated in response to platform key codes
+  /// Auto-generated key IDs are generated in response to platform key codes
   /// which Flutter doesn't recognize, and their IDs shouldn't be used in a
   /// persistent way.
   ///
-  /// Autogenerated IDs should be a rare occurrence: Flutter supports most keys.
+  /// Auto-generated IDs should be a rare occurrence: Flutter supports most keys.
   ///
   /// Keys that generate Unicode characters (even if unknown to Flutter) will
   /// not return true for `isAutogenerated`, since they will be assigned a
@@ -209,10 +209,10 @@ class LogicalKeyboardKey extends Diagnosticable {
   /// produced on until Flutter adds support for recognizing it.
   ///
   /// So, hypothetically, if Android added a new key code of 0xffff,
-  /// representing a new "do what I mean" key, then the autogenerated code would
-  /// be 0x1020000ffff, but once Flutter added the "doWhatIMean" key to the
-  /// definitions below, the new code would be 0x0020000ffff for all platforms
-  /// that had a "do what I mean" key from then on.
+  /// representing a new "do what I mean" key, then the auto-generated code
+  /// would be 0x1020000ffff, but once Flutter added the "doWhatIMean" key to
+  /// the definitions below, the new code would be 0x0020000ffff for all
+  /// platforms that had a "do what I mean" key from then on.
   bool get isAutogenerated => (keyId & autogeneratedMask) != 0;
 
   /// Mask for the 32-bit value portion of the key code.
@@ -226,7 +226,7 @@ class LogicalKeyboardKey extends Diagnosticable {
   /// This is used by platform-specific code to generate Flutter key codes.
   static const int platformMask = 0x0FF00000000;
 
-  /// Mask for the autogenerated bit portion of the key code.
+  /// Mask for the auto-generated bit portion of the key code.
   ///
   /// This is used by platform-specific code to generate new Flutter key codes
   /// for keys which are not recognized.

packages/flutter/lib/src/services/platform_views.dart

@@ -349,7 +349,7 @@ class AndroidMotionEvent {
   /// See Android's [MotionEvent#getDeviceId](https://developer.android.com/reference/android/view/MotionEvent.html#getDeviceId()).
   final int deviceId;
 
-  /// A bitfield indicating which edges, if any, were touched by this MotionEvent.
+  /// A bit field indicating which edges, if any, were touched by this MotionEvent.
   ///
   /// See Android's [MotionEvent#getEdgeFlags](https://developer.android.com/reference/android/view/MotionEvent.html#getEdgeFlags()).
   final int edgeFlags;
@@ -598,7 +598,8 @@ class UiKitViewController {
 
   /// The unique identifier of the iOS view controlled by this controller.
   ///
-  /// This identifer is typically generated by [PlatformViewsRegistry.getNextPlatformViewId].
+  /// This identifier is typically generated by
+  /// [PlatformViewsRegistry.getNextPlatformViewId].
   final int id;
 
   bool _debugDisposed = false;

packages/flutter/lib/src/services/system_chrome.dart

@@ -255,7 +255,7 @@ class SystemChrome {
   /// If a particular overlay is unsupported on the platform, enabling or
   /// disabling that overlay will be ignored.
   ///
-  /// The settings here can be overidden by the platform when System UI becomes
+  /// The settings here can be overridden by the platform when System UI becomes
   /// necessary for functionality.
   ///
   /// For example, on Android, when the keyboard becomes visible, it will enable the

packages/flutter/lib/src/services/text_input.dart

@@ -389,7 +389,7 @@ class TextInputConfiguration {
   /// Defaults to false.
   final bool obscureText;
 
-  /// Whether to enable autocorrection.
+  /// Whether to enable auto-correction.
   ///
   /// Defaults to true.
   final bool autocorrect;
@@ -400,7 +400,7 @@ class TextInputConfiguration {
   /// What kind of action to request for the action button on the IME.
   final TextInputAction inputAction;
 
-  /// Specifies how platforms may automatically capitialize text entered by the
+  /// Specifies how platforms may automatically capitalize text entered by the
   /// user.
   ///
   /// Defaults to [TextCapitalization.none].

packages/flutter/lib/src/widgets/app.dart

@@ -33,7 +33,7 @@ export 'dart:ui' show Locale;
 /// The [locales] list is the device's preferred locales when the app started, or the
 /// device's preferred locales the user selected after the app was started. This list
 /// is in order of preference. If this list is null or empty, then Flutter has not yet
-/// recieved the locale information from the platform. The [supportedLocales] parameter
+/// received the locale information from the platform. The [supportedLocales] parameter
 /// is just the value of [WidgetsApp.supportedLocales].
 ///
 /// See also:
@@ -47,7 +47,7 @@ typedef LocaleListResolutionCallback = Locale Function(List<Locale> locales, Ite
 ///
 /// It is recommended to provide a [LocaleListResolutionCallback] instead of a
 /// [LocaleResolutionCallback] when possible, as [LocaleResolutionCallback] only
-/// recieves a subset of the information provided in [LocaleListResolutionCallback].
+/// receives a subset of the information provided in [LocaleListResolutionCallback].
 ///
 /// A [LocaleResolutionCallback] is responsible for computing the locale of the app's
 /// [Localizations] object when the app starts and when user changes the default
@@ -59,7 +59,7 @@ typedef LocaleListResolutionCallback = Locale Function(List<Locale> locales, Ite
 /// The [locale] is either the value of [WidgetsApp.locale], or the device's default
 /// locale when the app started, or the device locale the user selected after the app
 /// was started. The default locale is the first locale in the list of preferred
-/// locales. If [locale] is null, then Flutter has not yet recieved the locale
+/// locales. If [locale] is null, then Flutter has not yet received the locale
 /// information from the platform. The [supportedLocales] parameter is just the value of
 /// [WidgetsApp.supportedLocales].
 ///
@@ -524,7 +524,7 @@ class WidgetsApp extends StatefulWidget {
   /// This callback considers the entire list of preferred locales.
   ///
   /// This algorithm should be able to handle a null or empty list of preferred locales,
-  /// which indicates Flutter has not yet recieved locale information from the platform.
+  /// which indicates Flutter has not yet received locale information from the platform.
   ///
   /// See also:
   ///
@@ -541,7 +541,7 @@ class WidgetsApp extends StatefulWidget {
   /// over [localeResolutionCallback] as it provides the full preferred locales list.
   ///
   /// This algorithm should be able to handle a null locale, which indicates
-  /// Flutter has not yet recieved locale information from the platform.
+  /// Flutter has not yet received locale information from the platform.
   ///
   /// See also:
   ///
@@ -585,8 +585,8 @@ class WidgetsApp extends StatefulWidget {
   /// [Locale.countryCode] to specify a generic fallback for a particular script.
   ///
   /// A fully supported language with multiple scripts should define a generic language-only
-  /// locale (eg. 'zh'), language+script only locales (eg. 'zh_Hans' and 'zh_Hant'),
-  /// and any language+script+country locales (eg. 'zh_Hans_CN'). Fully defining all of
+  /// locale (e.g. 'zh'), language+script only locales (e.g. 'zh_Hans' and 'zh_Hant'),
+  /// and any language+script+country locales (e.g. 'zh_Hans_CN'). Fully defining all of
   /// these locales as supported is not strictly required but allows for proper locale resolution in
   /// the most number of cases. These locales can be specified with the [Locale.fromSubtags]
   /// constructor:
@@ -847,7 +847,7 @@ class _WidgetsAppState extends State<WidgetsApp> implements WidgetsBindingObserv
   /// Custom resolution algorithms can be provided through [WidgetsApp.localeListResolutionCallback]
   /// or [WidgetsApp.localeResolutionCallback].
   ///
-  /// When no custom locale resolition algorithms are provided or if both fail to resolve,
+  /// When no custom locale resolution algorithms are provided or if both fail to resolve,
   /// Flutter will default to calling this algorithm.
   ///
   /// This algorithm prioritizes speed at the cost of slightly less appropriate
@@ -859,7 +859,7 @@ class _WidgetsAppState extends State<WidgetsApp> implements WidgetsBindingObserv
   ///
   /// In the case where a locale is matched by languageCode-only and is not the
   /// default (first) locale, the next locale in preferredLocales with a
-  /// perfect match can supercede the languageCode-only match if it exists.
+  /// perfect match can supersede the languageCode-only match if it exists.
   ///
   /// When a preferredLocale matches more than one supported locale, it will resolve
   /// to the first matching locale listed in the supportedLocales.

packages/flutter/lib/src/widgets/async.dart

@@ -389,7 +389,7 @@ class StreamBuilder<T> extends StreamBuilderBase<T, AsyncSnapshot<T>> {
 
   /// The data that will be used to create the initial snapshot.
   ///
-  /// Providing this value (presumably obtained sychronously somehow when the
+  /// Providing this value (presumably obtained synchronously somehow when the
   /// [Stream] was created) ensures that the first frame will show useful data.
   /// Otherwise, the first frame will be built with the value null, regardless
   /// of whether a value is available on the stream: since streams are

packages/flutter/lib/src/widgets/basic.dart

@@ -1264,7 +1264,7 @@ class CompositedTransformTarget extends SingleChildRenderObjectWidget {
 ///
 /// Hit testing on descendants of this widget will only work if the target
 /// position is within the box that this widget's parent considers to be
-/// hitable. If the parent covers the screen, this is trivially achievable, so
+/// hittable. If the parent covers the screen, this is trivially achievable, so
 /// this widget is usually used as the root of an [OverlayEntry] in an app-wide
 /// [Overlay] (e.g. as created by the [MaterialApp] widget's [Navigator]).
 ///
@@ -5968,7 +5968,7 @@ class ExcludeSemantics extends SingleChildRenderObjectWidget {
 /// Semantic indexes are used by TalkBack/Voiceover to make announcements about
 /// the current scroll state. Certain widgets like the [ListView] will
 /// automatically provide a child index for building semantics. A user may wish
-/// to manually provide semanitc indexes if not all child of the scrollable
+/// to manually provide semantic indexes if not all child of the scrollable
 /// contribute semantics.
 ///
 /// {@tool sample}
@@ -5994,7 +5994,7 @@ class ExcludeSemantics extends SingleChildRenderObjectWidget {
 ///
 /// See also:
 ///
-///  * [CustomScrollView], for an explaination of index semantics.
+///  * [CustomScrollView], for an explanation of index semantics.
 class IndexedSemantics extends SingleChildRenderObjectWidget {
   /// Creates a widget that annotated the first child semantics node with an index.
   ///

packages/flutter/lib/src/widgets/binding.dart

@@ -22,7 +22,7 @@ export 'dart:ui' show AppLifecycleState, Locale;
 
 /// Interface for classes that register with the Widgets layer binding.
 ///
-/// When used as a mixin, provides noop method implementations.
+/// When used as a mixin, provides no-op method implementations.
 ///
 /// See [WidgetsBinding.addObserver] and [WidgetsBinding.removeObserver].
 ///

packages/flutter/lib/src/widgets/container.dart

@@ -145,9 +145,9 @@ class DecoratedBox extends SingleChildRenderObjectWidget {
 /// Since [Container] combines a number of other widgets each with their own
 /// layout behavior, [Container]'s layout behavior is somewhat complicated.
 ///
-/// tl;dr: [Container] tries, in order: to honor [alignment], to size itself to
-/// the [child], to honor the `width`, `height`, and [constraints], to expand to
-/// fit the parent, to be as small as possible.
+/// Summary: [Container] tries, in order: to honor [alignment], to size itself
+/// to the [child], to honor the `width`, `height`, and [constraints], to expand
+/// to fit the parent, to be as small as possible.
 ///
 /// More specifically:
 ///

packages/flutter/lib/src/widgets/editable_text.dart

@@ -347,7 +347,7 @@ class EditableText extends StatefulWidget {
   /// Since fonts may vary depending on user input and due to font
   /// fallback, [StrutStyle.forceStrutHeight] is enabled by default
   /// to lock all lines to the height of the base [TextStyle], provided by
-  /// [style]. This ensures the typed text fits within the alotted space.
+  /// [style]. This ensures the typed text fits within the allotted space.
   ///
   /// If null, the strut used will is inherit values from the [style] and will
   /// have [StrutStyle.forceStrutHeight] set to true. When no [style] is
@@ -453,10 +453,10 @@ class EditableText extends StatefulWidget {
   ///
   /// If this is null, there is no limit to the number of lines, and the text
   /// container will start with enough vertical space for one line and
-  /// automatically grow to accomodate additional lines as they are entered.
+  /// automatically grow to accommodate additional lines as they are entered.
   ///
   /// If it is not null, the value must be greater than zero. If it is greater
-  /// than 1, it will take up enough horizontal space to accomodate that number
+  /// than 1, it will take up enough horizontal space to accommodate that number
   /// of lines.
   /// {@endtemplate}
   final int maxLines;

packages/flutter/lib/src/widgets/form.dart

@@ -254,7 +254,7 @@ class FormField<T> extends StatefulWidget {
   /// If true, this form field will validate and update its error text
   /// immediately after every change. Otherwise, you must call
   /// [FormFieldState.validate] to validate. If part of a [Form] that
-  /// autovalidates, this value will be ignored.
+  /// auto-validates, this value will be ignored.
   final bool autovalidate;
 
   /// Whether the form is able to receive user input.

packages/flutter/lib/src/widgets/image.dart

@@ -67,7 +67,8 @@ ImageConfiguration createLocalImageConfiguration(BuildContext context, { Size si
 /// The [BuildContext] and [Size] are used to select an image configuration
 /// (see [createLocalImageConfiguration]).
 ///
-/// The `onError` argument can be used to manually handle errors while precaching.
+/// The `onError` argument can be used to manually handle errors while
+/// pre-caching.
 ///
 /// See also:
 ///
@@ -561,7 +562,7 @@ class Image extends StatefulWidget {
 
   /// A Semantic description of the image.
   ///
-  /// Used to provide a description of the image to TalkBack on Andoid, and
+  /// Used to provide a description of the image to TalkBack on Android, and
   /// VoiceOver on iOS.
   final String semanticLabel;
 

packages/flutter/lib/src/widgets/inherited_notifier.dart

@@ -9,7 +9,7 @@ import 'framework.dart';
 /// An inherited widget for a [Listenable] [notifier], which updates its
 /// dependencies when the [notifier] is triggered.
 ///
-/// This is a variant of [InheritedWidget], specialised for subclasses of
+/// This is a variant of [InheritedWidget], specialized for subclasses of
 /// [Listenable], such as [ChangeNotifier] or [ValueNotifier].
 ///
 /// Dependents are notified whenever the [notifier] sends notifications, or

packages/flutter/lib/src/widgets/media_query.dart

@@ -47,7 +47,7 @@ enum Orientation {
 /// same as the window that contains the app.
 ///
 /// Widgets whose layouts consume space defined by [viewInsets] or
-/// [padding] shoud enclose their children in secondary MediaQuery
+/// [padding] should enclose their children in secondary MediaQuery
 /// widgets that reduce those properties by the same amount.
 /// The [removePadding] and [removeInsets] methods are useful for this.
 @immutable

packages/flutter/lib/src/widgets/nested_scroll_view.dart

@@ -52,7 +52,7 @@ typedef NestedScrollViewHeaderSliversBuilder = List<Widget> Function(BuildContex
 /// in the opposite direction (e.g. allowing the user to swipe horizontally
 /// between the pages represented by the tabs, while the list scrolls
 /// vertically), then any list inside that [TabBarView] would not interact with
-/// the outer [ScrollView]. For example, flinginsg the inner list to scroll to
+/// the outer [ScrollView]. For example, flinging the inner list to scroll to
 /// the top would not cause a collapsed [SliverAppBar] in the outer [ScrollView]
 /// to expand.
 ///

packages/flutter/lib/src/widgets/scroll_position.dart

@@ -259,7 +259,7 @@ abstract class ScrollPosition extends ViewportOffset with ScrollMetrics {
   ///  * [jumpTo], for making changes to position while not in the
   ///    middle of layout and applying the new position immediately.
   ///  * [animateTo], which is like [jumpTo] but animating to the
-  ///    distination offset.
+  ///    destination offset.
   void correctPixels(double value) {
     _pixels = value;
   }

packages/flutter/lib/src/widgets/scroll_view.dart

@@ -394,7 +394,7 @@ abstract class ScrollView extends StatelessWidget {
 /// A [CustomScrollView] can allow Talkback/VoiceOver to make announcements
 /// to the user when the scroll state changes. For example, on Android an
 /// announcement might be read as "showing items 1 to 10 of 23". To produce
-/// this announcment, the scroll view needs three pieces of information:
+/// this announcement, the scroll view needs three pieces of information:
 ///
 ///   * The first visible child index.
 ///   * The total number of children.
@@ -410,7 +410,7 @@ abstract class ScrollView extends StatelessWidget {
 /// generated semantics of each scrollable item with a semantic index. This can
 /// be done by wrapping the child widgets in an [IndexedSemantics].
 ///
-/// This semantic index is not necesarily the same as the index of the widget in
+/// This semantic index is not necessarily the same as the index of the widget in
 /// the scrollable, because some widgets may not contribute semantic
 /// information. Consider a [new ListView.separated()]: every other widget is a
 /// divider with no semantic information. In this case, only odd numbered

packages/flutter/lib/src/widgets/scrollbar.dart

@@ -77,7 +77,7 @@ class ScrollbarPainter extends ChangeNotifier implements CustomPainter {
   /// pixels. Mustn't be null.
   final double mainAxisMargin;
 
-  /// Distance from the scrollbar's side to the nearest edge in pixels. Musn't
+  /// Distance from the scrollbar's side to the nearest edge in pixels. Must not
   /// be null.
   final double crossAxisMargin;
 

packages/flutter/lib/src/widgets/sliver.dart

@@ -255,7 +255,7 @@ abstract class SliverChildDelegate {
 ///
 /// In certain cases, only a subset of child widgets should be annotated
 /// with a semantic index. For example, in [new ListView.separated()] the
-/// separators do not have an index assocaited with them. This is done by
+/// separators do not have an index associated with them. This is done by
 /// providing a `semanticIndexCallback` which returns null for separators
 /// indexes and rounds the non-separator indexes down by half.
 ///
@@ -460,7 +460,7 @@ class SliverChildBuilderDelegate extends SliverChildDelegate {
 ///
 /// In certain cases, only a subset of child widgets should be annotated
 /// with a semantic index. For example, in [new ListView.separated()] the
-/// separators do not have an index assocaited with them. This is done by
+/// separators do not have an index associated with them. This is done by
 /// providing a `semanticIndexCallback` which returns null for separators
 /// indexes and rounds the non-separator indexes down by half.
 ///

packages/flutter/lib/src/widgets/value_listenable_builder.dart

@@ -18,7 +18,7 @@ import 'framework.dart';
 ///    a [ValueListenable] changes value.
 typedef ValueWidgetBuilder<T> = Widget Function(BuildContext context, T value, Widget child);
 
-/// A widget whose content stays sync'ed with a [ValueListenable].
+/// A widget whose content stays synced with a [ValueListenable].
 ///
 /// Given a [ValueListenable<T>] and a [builder] which builds widgets from
 /// concrete values of `T`, this class will automatically register itself as a

packages/flutter/lib/src/widgets/widget_inspector.dart

@@ -369,7 +369,7 @@ class _ScreenshotData {
 /// of the regular rendering pipeline.
 /// This painting context behaves the same as standard [PaintingContext] with
 /// instrumentation added to compute a screenshot of a specified [RenderObject]
-/// added. To correctly mimic the behavor of the regular rendering pipeline, the
+/// added. To correctly mimic the behavior of the regular rendering pipeline, the
 /// full subtree of the first [RepaintBoundary] ancestor of the specified
 /// [RenderObject] will also be rendered rather than just the subtree of the
 /// render object.

packages/flutter/test/widgets/semantics_tester.dart

@@ -212,7 +212,7 @@ class TestSemantics {
   /// parent).
   final Matrix4 transform;
 
-  /// The elevation of this node reative to the parent node.
+  /// The elevation of this node relative to the parent node.
   ///
   /// See also:
   ///
@@ -493,8 +493,8 @@ class SemanticsTester {
   ///
   /// Use this method to generate code for unit tests. It works similar to
   /// screenshot testing. The very first time you add semantics to a widget you
-  /// verify manually that the widget behaves correctly. You then use ths method
-  /// to generate test code for this widget.
+  /// verify manually that the widget behaves correctly. You then use this
+  /// method to generate test code for this widget.
   ///
   /// Example:
   ///