[GitHub] [incubator-weex] jqoo opened a new issue #2922: [iOS] viewdisappear后调用组件的方法容易crash

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

jqoo opened a new issue #2922: [iOS] viewdisappear后调用组件的方法容易crash
URL: https://github.com/apache/incubator-weex/issues/2922
 
 
   `
   - (SEL)_methodWithComponetName:(NSString *)name withMethod:(NSString *)method isSync:(BOOL *)isSync
   {
       WXAssert(name && method, @"Fail to find selector with module name and method, please check if the parameters are correct ！");
       //...
   }
   `
   闪退在了这里，原因是在页面pop时，发出了disappear，然后销毁了页面里的实例，但页面里disappear事件的回调方法里，调用组件的方法时，self.instance依然是非空，根据ref找不到组件：
   `
   - (void)invoke
   {
       WXPerformBlockOnComponentThread(^{
           WXComponent *component = [self.instance componentForRef:_componentRef];
           if (!component) {
               WXLogError(@"component not found for ref:%@, type:%@", _componentRef, _componentName);
           }
       //...
   }
   `
   

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