ios - UINavigationItem touchView 触摸大小

Question

我正在我的 UINavigationItem 的 touchView 上设置一个视图，并向它添加一个轻击手势识别器。奇怪的是，即使点击在视图之外，点击识别器也会被调用。知道为什么会发生这种情况吗？

UIView *testView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 120.0f, 20.0f)];
testView.backgroundColor = [UIColor redColor];
UIGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doStuff:)];
tapRecognizer.cancelsTouchesInView = YES;
[testView addGestureRecognizer:tapRecognizer];
testView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
self.navigationItem.titleView = testView;

我可以在红框外点击，仍然触发手势识别器。

Answer 1

用这种方式

UITapGestureRecognizer *tapRecognizer = 
  [[UITapGestureRecognizer alloc] initWithTarget:self 
                                          action:@selector(doStuff:)];

而不是这段代码

 UIGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doStuff:)];