原文地址:传送门
弹出一个UIAlertView,然后点击窗口之外的区域来关闭UIALertView,代码如下:
- - (IBAction)showAlert:(id)sender {
- alert = [[UIAlertView alloc] initWithTitle:@"测试"
- message:@"点击四周的区域我就消失"
- delegate:nil
- cancelButtonTitle:@"确定"
- otherButtonTitles:nil];
- [alert show];
- recognizerTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapBehind:)];
- [recognizerTap setNumberOfTapsRequired:1];
- recognizerTap.cancelsTouchesInView = NO;
- [[UIApplication sharedApplication].keyWindow addGestureRecognizer:recognizerTap];
- }
- - (void)handleTapBehind:(UITapGestureRecognizer *)sender {
- if (sender.state == UIGestureRecognizerStateEnded){
- CGPoint location = [sender locationInView:nil];
- if (![alert pointInside:[alert convertPoint:location fromView:alert.window] withEvent:nil]){
- [alert.window removeGestureRecognizer:sender];
- [alert dismissWithClickedButtonIndex:0 animated:YES];
- }
- }
- }