No longer using -init for Color Scheme. (material-components#5734)

{MDC iOS} No longer using `-init` for Color Scheme.

Based on the discussions in go/mdc-ios-theming, we should not use the `-init` default initializer. Instead, we should use an explicit set of defaults.

Search regex: '\[\[MDCSemanticColorScheme alloc\] init\]'

Author: Robert Moore

components/ActionSheet/examples/ActionSheetTypicalUse.m

@@ -33,7 +33,8 @@ - (instancetype)init {
   self = [super init];
   if (self) {
     self.title = @"Action Sheet";
-    _colorScheme = [[MDCSemanticColorScheme alloc] init];
+    _colorScheme =
+        [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
     _typographyScheme = [[MDCTypographyScheme alloc] init];
     _showButton = [[MDCButton alloc] init];
     _buttonScheme = [[MDCButtonScheme alloc] init];

components/ActionSheet/src/ActionSheetThemer/MDCActionSheetScheme.m

@@ -19,7 +19,8 @@ @implementation MDCActionSheetScheme
 - (instancetype)init {
   self = [super init];
   if (self) {
-    _colorScheme = [[MDCSemanticColorScheme alloc] init];
+    _colorScheme =
+        [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
     _typographyScheme = [[MDCTypographyScheme alloc] init];
   }
   return self;

components/ActionSheet/tests/unit/MDCActionSheetThemeTest.m

@@ -48,7 +48,8 @@ - (void)setUp {
   [super setUp];
 
   self.actionSheet = [[MDCActionSheetController alloc] init];
-  self.colorScheme = [[MDCSemanticColorScheme alloc] init];
+  self.colorScheme =
+      [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
   UIColor *surface = UIColor.blueColor;
   UIColor *onSurface = UIColor.redColor;
   self.colorScheme.surfaceColor = surface;
@@ -74,7 +75,8 @@ - (void)testDefaultScheme {
   // Given
   MDCActionSheetScheme *defaultScheme = [[MDCActionSheetScheme alloc] init];
   MDCTypographyScheme *defaultTypographyScheme = [[MDCTypographyScheme alloc] init];
-  MDCSemanticColorScheme *defaultColorScheme = [[MDCSemanticColorScheme alloc] init];
+  MDCSemanticColorScheme *defaultColorScheme =
+      [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
 
   // Then
   XCTAssertEqualObjects(defaultScheme.typographyScheme.subtitle1,

components/ActivityIndicator/README.md

@@ -242,7 +242,7 @@ MDCActivityIndicatorColorThemer.applySemanticColorScheme(colorScheme, to: activi
 #import "MaterialActivityIndicator+ColorThemer.h"
 
 // Step 2: Create or get a color scheme
-id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] init];
+id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
 
 // Step 3: Apply the color scheme to your component
 [MDCActivityIndicatorColorThemer applySemanticColorScheme:colorScheme

components/ActivityIndicator/docs/color-theming.md

@@ -30,7 +30,7 @@ MDCActivityIndicatorColorThemer.applySemanticColorScheme(colorScheme, to: activi
 #import "MaterialActivityIndicator+ColorThemer.h"
 
 // Step 2: Create or get a color scheme
-id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] init];
+id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
 
 // Step 3: Apply the color scheme to your component
 [MDCActivityIndicatorColorThemer applySemanticColorScheme:colorScheme

components/ActivityIndicator/examples/ActivityIndicatorExample.m

@@ -33,7 +33,8 @@ - (id)init {
   self = [super init];
   if (self) {
     self.title = @"Activity Indicator";
-    self.colorScheme = [[MDCSemanticColorScheme alloc] init];
+    self.colorScheme =
+        [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
   }
   return self;
 }

components/ActivityIndicator/examples/ActivityIndicatorTransitionExample.m

@@ -42,7 +42,8 @@ - (id)init {
   self = [super init];
   if (self) {
     self.title = @"Activity Indicator Transition";
-    self.colorScheme = [[MDCSemanticColorScheme alloc] init];
+    self.colorScheme =
+        [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
     self.typographyScheme = [[MDCTypographyScheme alloc] init];
   }
   return self;

components/AppBar/README.md

@@ -668,7 +668,7 @@ MDCAppBarColorThemer.applySemanticColorScheme(colorScheme, to: component)
 #import "MaterialAppBar+ColorThemer.h"
 
 // Step 2: Create or get a color scheme
-id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] init];
+id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
 
 // Step 3: Apply the color scheme to your component
 [MDCAppBarColorThemer applySemanticColorScheme:colorScheme

components/AppBar/docs/color-theming.md

@@ -28,7 +28,7 @@ MDCAppBarColorThemer.applySemanticColorScheme(colorScheme, to: component)
 #import "MaterialAppBar+ColorThemer.h"
 
 // Step 2: Create or get a color scheme
-id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] init];
+id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
 
 // Step 3: Apply the color scheme to your component
 [MDCAppBarColorThemer applySemanticColorScheme:colorScheme

components/AppBar/examples/AppBarImageryExample.m

@@ -32,7 +32,8 @@ - (void)dealloc {
 - (id)init {
   self = [super init];
   if (self) {
-    _colorScheme = [[MDCSemanticColorScheme alloc] init];
+    _colorScheme =
+        [[MDCSemanticColorScheme alloc] initWithDefaults:MDCColorSchemeDefaultsMaterial201804];
 
     _appBarViewController = [[MDCAppBarViewController alloc] init];