xcode – [IOS SDK] – touchesBegan与特定对象？
发布时间：2020-12-14 17:16:17 所属栏目：百科 来源：网络整理
导读：当我触摸屏幕上的任何地方触摸触发事件时触发.但我无法管理如何像UI ImageView一样触摸特定对象？ -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locati
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当我触摸屏幕上的任何地方触摸触发事件时触发.但我无法管理如何像UI
ImageView一样触摸特定对象？
-(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];
}
解决方法
好的,找到了解决方案,这里是代码：
-(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;
}
}
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