iphone - 使用 UITapGestureRecognizer 时不会调用 textFieldShouldEndEditing

Question

在我的 ViewController 中，我得到了-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath，但这永远不会被调用。我搜索了为什么没有调用它，我发现我使用了这个：

 UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]
                                   initWithTarget:self
                                   action:@selector(dismissKeyboard)];

    [self.view addGestureRecognizer:tap];

点击背景时关闭键盘。知道如何解决这个问题，dismisskeyboard 点击背景和didSelectRowAtIndexPath工作？

Answer 1

如果您点击此视图。您必须覆盖您的委托方法shouldReceiveTouch才能返回NO。如果触摸发生在tableView

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {

    // Disallow recognition of tap gestures in the segmented control.
    if ([touch.view isDescendantOfView:self.tblView]) {
        return NO;
    }
    return YES;
}

现在两个委托方法将触发.. Note:self.tblView 是一个 tableView

Answer 2

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer 
return TRUE;

好的，看看你如何处理那个......然后如果它有效，请阅读文档以获得全面的解释，以便您有一个清晰的理解。

Answer 3

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]
                               initWithTarget:self
                               action:@selector(dismissKeyboard:)];

[tbl addGestureRecognizer:tap];

-(void)dismissKeyboard:(UITapGestureRecognizer *)gestureRecognizer
{
    CGPoint p = [gestureRecognizer locationInView:tbl];

    NSIndexPath *indexPath = [tbl indexPathForRowAtPoint:p];
    if (indexPath == nil)
        NSLog(@"Resign");
    else
        NSLog(@"Did select Row, %i",indexPath.row);// Do your stuff as you are doing in didSelectRow
}

实现这个

Answer 4

didSelectRowAtIndexPath永远不会被调用，因为您可能没有实现UITableViewDelegate.

您应该将其与您的控件一起使用以从响应者中辞职

 [yourTextField resignFirstResponder];

Answer 5

像这样尝试它会帮助你，

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [[event allTouches] anyObject];
    if(![[touch view] isKindOfClass:[UITextField class]]){

//resign your textfield here
    }

}