[GitHub] [incubator-weex] dorentus commented on pull request #3268: [iOS] 修复使用 Xcode 12 构建且运行在 iOS 14 上时图片不加载的问题

[GitBox <gi...@apache.org>]

dorentus commented on pull request #3268:
URL: https://github.com/apache/incubator-weex/pull/3268#issuecomment-751980221


   我这边使用 https://github.com/apache/incubator-weex/pull/3276 之后还是会遇到图片不显示的问题，不是所有图片，是随机的部分图片显示不出来。调试显示对应的 `WXImageView` 的 `image` 属性是有值的。
   
   现在是用了这样的方式绕过的：
   
   ```diff
   diff --git a/ios/sdk/WeexSDK/Sources/Component/WXImageComponent.m b/ios/sdk/WeexSDK/Sources/Component/WXImageComponent.m
   index 628033fbe541cf4b9506d4279ad99615e0d616fc..2f02c2580aafd66f81a2cf3001d1e09dc1fe0838 100644
   --- a/ios/sdk/WeexSDK/Sources/Component/WXImageComponent.m
   +++ b/ios/sdk/WeexSDK/Sources/Component/WXImageComponent.m
   @@ -35,6 +35,26 @@
    #import <pthread/pthread.h>
    #import "WXMonitor.h"
    #import "WXSDKInstance_performance.h"
   +#import <objc/message.h>
   +
   +@interface WXImageLayer : WXLayer
   +
   +@end
   +
   +@implementation WXImageLayer
   +
   +- (void)display
   +{
   +    if (@available(iOS 14.0, *)) {
   +        // call -[CALayer display]
   +        struct objc_super s = {.receiver = self, .super_class = self.superclass.superclass};
   +        ((void (*)(struct objc_super *, SEL))objc_msgSendSuper)(&s, _cmd);
   +    }
   +
   +    [super display];
   +}
   +
   +@end
    
    @interface WXImageView : UIImageView
    
   @@ -44,7 +64,7 @@
    
    + (Class)layerClass
    {
   -    return [WXLayer class];
   +    return [WXImageLayer class];
    }
    
    @end
   ```
   


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