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Support status bar taps in FlutterAppDelegate (#3387)

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Provide a default status bar tap handler for FlutterAppDelegate.
By default, taps are passed to the key window's rootViewController if
it's a FlutterViewController. Apps with custom app delegates can
customize this behaviour to send the tap to the FlutterViewController(s)
they prefer by overriding touchesBegan:withEvent.
This commit is contained in:
Chris Bracken 2017-02-02 16:29:22 -08:00 committed by GitHub
parent c1524787df
commit c354127d4d
2 changed files with 32 additions and 3 deletions
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14
shell/platform/darwin/ios/framework/Headers/FlutterAppDelegate.h
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@ -9,10 +9,18 @@
#include "FlutterMacros.h"
// Empty implementation of UIApplicationDelegate, for simple apps
// that don't need to customize the application delegate.
/**
* UIApplicationDelegate subclass for simple apps that want default behavior.
*
* This class provides the following behaviors:
* * Status bar touches are forwarded to the key window's root view
* FlutterViewController, in order to trigger scroll to top.
*
* App delegates for Flutter applications are *not* required to inherit from
* this class. Developers of custom app delegate classes should copy and paste
* code as necessary from FlutterAppDelegate.mm.
*/
FLUTTER_EXPORT
__attribute__((deprecated("subclass UIResponder<UIApplicationDelegate>")))
@interface FlutterAppDelegate : UIResponder<UIApplicationDelegate>
@property(strong, nonatomic) UIWindow* window;

21
shell/platform/darwin/ios/framework/Source/FlutterAppDelegate.mm
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@ -3,7 +3,28 @@
// found in the LICENSE file.
#include "flutter/shell/platform/darwin/ios/framework/Headers/FlutterAppDelegate.h"
#include "flutter/shell/platform/darwin/ios/framework/Headers/FlutterViewController.h"
@implementation FlutterAppDelegate
// Returns the key window's rootViewController, if it's a FlutterViewController.
// Otherwise, returns nil.
- (FlutterViewController*)rootFlutterViewController {
UIViewController *viewController =
[UIApplication sharedApplication].keyWindow.rootViewController;
if ([viewController isKindOfClass:[FlutterViewController class]]) {
return (FlutterViewController*)viewController;
}
return nil;
}
- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
[super touchesBegan:touches withEvent:event];
// Pass status bar taps to key window Flutter rootViewController.
if (self.rootFlutterViewController != nil) {
[self.rootFlutterViewController handleStatusBarTouches:event];
}
}
@end