iOS判断当前点击的位置是否在某个视图上
记录几种判断触摸点是否在某个view上面的方法
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第一种方式：
isDescendantOfView:通过
touch.view调用isDescendantOfView:方法，返回YES, 则触摸点在我们需要判断的视图上；反之则不在。- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches.allObjects lastObject]; BOOL result = [touch.view isDescendantOfView:self.blueView]; NSLog(@"%@点击在蓝色视图上", result ? @"是" : @"不是"); } -
第二种方式：
locationInView:和containsPoint结合使用- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches.allObjects lastObject]; CGPoint point = [touch locationInView:self.blueView]; BOOL result = [self.blueView.layer containsPoint:point]; NSLog(@"%@点击在蓝色视图上", result ? @"是" : @"不是"); } -
第三种方式：
locationInView:和CGRectContainsPoint结合使用locationView如果传入的是需要判断视图(self.blueView)的父视图，CGRectContainsPoint则需要传入需要判断视图(self.blueView)的frame，否则传入bounds.- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches.allObjects lastObject]; CGPoint point = [touch locationInView:self.blueView]; BOOL result = CGRectContainsPoint(self.blueView.bounds, point); NSLog(@"这次%@点击在蓝色视图上", result ? @"是" : @"不是"); } -
第四种方式：坐标转换convertPoint:fromLayer: 再判断是否是在该视图范围内 containsPoint:
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { CGPoint point = [[touches anyObject] locationInView:self.view]; point = [self.blueView.layer convertPoint:point fromLayer:self.view.layer]; BOOL result = [self.blueView.layer containsPoint:point]; NSLog(@"%@点击在蓝色视图上", result ? @"是" : @"不是"); }
