IOS隐藏键盘

//UITextField的Did End On Exit 调用下面事件
- (void)KeyExit:(id)sender
{
    NSLog(@"关闭键盘提交！");
    [sender resignFirstResponder];
}

//点击屏幕调用下面事件
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    NSLog(@"隐藏键盘！");
    UITouch *touch=[[event allTouches] anyObject];
    if (touch.tapCount >=1) {
        [EVresumePassword resignFirstResponder];
        [EVnewPassword resignFirstResponder];
        [EVoldPassword resignFirstResponder];
    }
}