iOS之UIAlertView点击窗口之外区域关闭

来源：互联网发布：安卓版打谱软件编辑：程序博客网时间：2024/06/08 13:39

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];    }  }}

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