Question

我通常使用这种方法来实现UIButton可移动;

[button addTarget:self action:@selector(dragMoving:withEvent:) forControlEvents:UIControlEventTouchDragInside];

但它会同时触发touchUpInside事件，我需要touchUpInside事件来做其他事情。

所以有人知道如何避免这种情况吗？

非常感谢;

使用下面的代码来解决它;

  [button addTarget:self action:@selector(touchDown:withEvent:) forControlEvents:UIControlEventTouchDown];

    [button addTarget:self action:@selector(touchDragInside:withEvent:) forControlEvents:UIControlEventTouchDragInside];
        [button addTarget:self action:@selector(touchUpInside:withEvent:) forControlEvents:UIControlEventTouchUpInside];

    - (void) touchUpInside :(UIControl*)c withEvent:ev{
    NSLog(@"touch Up inside");
    if (count) {
        NSLog(@"here I can do something about clicking event");
    }
}

    - (void) touchDown:(UIControl*)c withEvent:ev{
    NSLog(@"touch Down");
    count = YES;
}

    -(void) touchDragInside:(UIControl*)c withEvent:ev{
    NSLog(@"touch drag inside");
    c.center = [[[ev allTouches] anyObject] locationInView:self.view];
    count = NO;
}

Answer 1

实际上，实现此目的的最佳方法是使用UIPanGestureRecognizer并将其添加到按钮。它可以很好地处理拖动，你也可以点击它而无需做任何其他事情。

如何使Button可拖动但不触发click事件

1 个答案: