uipickerview - iOS 7.1 UITapGesture 不适用于 UIPickerView

Question

我们正在使用 UIPickerView允许用户从选项列表中进行选择。我们正在添加 UIPickerView作为容器 UIView 的 subview 。然后我们将一个 UITapGestureRecognizer 添加到容器 UIView . UITapGestureRecognizer被用来通过删除它的 super View 来解除选择器。

在 iOS 7.0 和以前的版本中，这按预期工作。但是，在 iOS 7.1 中，此设置不再适用于 UITapGestureRecognizer无法识别点击并调用操作中指定的选择器(关闭选择器 View 和容器 View )。代码如下

   - (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.nameList=[[NSMutableArray alloc] initWithObjects:@"A",@"B",@"C", nil];
    UIPickerView *myPickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 200, 320, 200)];
    myPickerView.delegate = self;
    myPickerView.showsSelectionIndicator = YES;
    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapInListPickerView:)];
    [singleTap setNumberOfTapsRequired:1];
    [singleTap setNumberOfTouchesRequired:1];
    [myPickerView addGestureRecognizer:singleTap];
    [self.view addSubview:myPickerView];
}

-(void)tapInListPickerView:(UIGestureRecognizer *)sender

{
    NSLog(@"Taped in pikcer view");
}

如果需要任何其他信息或者是否有更优选的方法来执行此操作，请告诉我。

Answer 1

我有同样的问题，我终于有一个启示:P

就像 uiPickerView 上的同时手势识别器不起作用。

所以我使用手势委托(delegate)

<
UIGestureRecognizerDelegate>

和

 // add tap gesture
    UITapGestureRecognizer* gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(pickerViewTapGestureRecognized:)];
    [picker addGestureRecognizer:gestureRecognizer];
    gestureRecognizer.delegate = self;

和

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
    // return
    return true;
}

然后它的工作!

再见