自动播放YouTube错误？

Question

- (void)webViewDidFinishLoad:(UIWebView *)YouTubePlayer { 
    UIButton *b = [self findButtonInView:YouTubePlayer]; 
    [b sendActionsForControlEvents:UIControlEventTouchUpInside]; 
} 

- (UIButton *)findButtonInView:(UIView *)view { 
    UIButton *button = nil; 

    if ([view isMemberOfClass:[UIButton class]]) { 
     return (UIButton *)view; 
    } 

    if (view.subviews && [view.subviews count] > 0) { 
     for (UIView *subview in view.subviews) { 
      button = [self findButtonInView:subview]; 
      if (button) return button; 
     } 
    } 

    return button; 
} 

此代码不能正常工作，我上线UIButton *b = [self findButtonInView:YouTubePlayer];越来越2级警告警告是：

当地的“YouTubePlayer”声明隐藏实例变量 “SecondViewController”可不回应“-findButtonInView：”

Answer 1

1. 您应该在findButtonInView方法中调用[YouTubePlayer view]。
2. 在您的SecondViewController.h文件中，添加行- (UIButton *)findButtonInView:(UIView *)view;。