iOS開發-UIImageView響應點選事件
阿新 • • 發佈：2019-02-04
UIImageView是不能夠響應點選事件的，在開發過程中我們需要經常對頭像等新增點選事件，上網搜尋一番後發現有如下兩個方法：
1.找到點選圖片Event，新增事件處理函式
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UIImageView.userInteractionEnabled =
YES;
- (void)touchesBegan:(NSSet
*)touches withEvent:(UIEvent *)event
{
UITouch *touch = [[event allTouches] anyObject];
if
([touch view] != UIImageView){
//do some method.....
}
}
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2.為UIImageView新增Tap手勢
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UIImageView.userInteractionEnabled =
YES;
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self
action:@selector(handleSingleTap:)];
[UIImageView addGestureRecognizer:singleTap];
- (void)handleSingleTap:(UIGestureRecognizer *)gestureRecognizer {
//do something....
}
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3.在UIImageView外層套一個UIView，在外層UIView上新增點選事件處理函式
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UIView*view = [[UIControl alloc] initWithFrame:CGRectMake(50,200,150,150)] ;
view.backgroundColor = [UIColor clearColor];
[(UIControl *)view addTarget:self
action:@selector(xxx) forControlEvents:UIControlEventTouchUpInside];
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"a.gif"]];
imageView.frame = CGRectMake(0, 0, view.bounds.size.width, view.bounds.size.height);
[view addSubview:imageView];
[self.view addSubview:view];
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ref：http://blog.csdn.net/iorchid/article/details/6398102#
http://www.cocoachina.com/bbs/read.php?tid-66270-page-1.html