xcode [IOS SDK]-touchesBegan 以特定对象开始？
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时间：2020-09-14 20:01:31 来源:igfitidea点击:
[IOS SDK]- touchesBegan with specific object?
提问by mohacs
When I touch anywhere on screen touchesBegan event triggered. but I couldn't manage how if I touch specific object as like UIImageView?
当我触摸屏幕上的任何地方时触发 touchesBegan 事件。但是如果我像 UIImageView 一样触摸特定对象，我无法管理如何？
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
CGPoint location = [touch locationInView: touch.view];
imageView.center = location;
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
[self touchesBegan:touches withEvent:event];
}
回答by mohacs
Ok, found the solution, here is the code:
好的，找到了解决方案，代码如下：
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
if ([touch view] == imageView) {
CGPoint location = [touch locationInView: self.view];
imageView.center = location;
}
}
