Files
react-native/Libraries/Image/RCTDisplayWeakRefreshable.h
T
Paige Sun e5a6655e71 iOS: Fix Animated image crash when CADisplayLink target in RCTWeakProxy is nil
Summary:
## Problem
When self is nil, this may crash in RCTUIImageViewAnimated.m.

```
_displayLink = [CADisplayLink displayLinkWithTarget:[RCTWeakProxy weakProxyWithTarget:self] selector:selector(displayDidRefresh:)];
```

## Fix

Replace `RCTWeakProxy` with a concrete class `RCTDisplayWeakRefreshable` that has the displayDidRefresh method, that calls the displayDidRefresh method in its weak target.

### Original Github Issue
https://github.com/facebook/react-native/pull/28070#issuecomment-619295254

Changelog: [iOS] [Fixed] -  Fix Animated image crash when CADisplayLink target in RCTWeakProxy is nil

Reviewed By: shergin

Differential Revision: D21419385

fbshipit-source-id: da7c3c38f81ea54f633da7f59359e07680ea2faf
2020-05-12 17:08:43 -07:00

23 lines
533 B
Objective-C

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import <Foundation/Foundation.h>
@protocol RCTDisplayRefreshable
- (void)displayDidRefresh:(CADisplayLink *)displayLink;
@end
@interface RCTDisplayWeakRefreshable : NSObject
@property (nonatomic, weak) id<RCTDisplayRefreshable> refreshable;
+ (CADisplayLink *)displayLinkWithWeakRefreshable:(id<RCTDisplayRefreshable>)refreshable;
@end