Question

我很想为一个简单的UIView做一个手势识别器：

UIView *theView = [[UIView alloc] initWithFrame:rect];
[theView setUserInteractionEnabled:YES];

UITapGestureRecognizer *tap = [[[UITapGestureRecognizer alloc] initWithTarget:self 
                                                                       action:@selector(handleTap)] autorelease];
[theView addGestureRecognizer:tap];

如果我调试视图的属性gestureRecognizers，它会显示手势识别器对象。但是当我点击视图内部时，它不起作用。

使用UIImageView的相同代码是完美的，任何想法为什么在UIView中不起作用？

更新：

示例类。

@implementation ExampleClass

- (UIView *)getViewInRect:(CGRect)rect
{
    UIView *theView = [[UIView alloc] initWithRect:rect];
    [theView setUserInteractionEnabled:YES];

    UITapGestureRecognizer *tap = [[[UITapGestureRecognizer alloc] 
                                    initWithTarget:self 
                                    action:@selector(handleTap)] 
                                   autorelease];
    [aText addGestureRecognizer:tap];

    return theView;
}

- (UIImageView *)getImageViewInRect:(CGRect)rect
{
    UIImageView *theView = [[UIImageView alloc] initWithRect:rect];
    [theView setUserInteractionEnabled:YES];

    UITapGestureRecognizer *tap = [[[UITapGestureRecognizer alloc] 
                                        initWithTarget:self 
                                                action:@selector(handleTap)] 
                                   autorelease];
    [theView addGestureRecognizer:tap];

    return [theView autorelease];    
}

- (void)handleTap
{
    NSLog(@"Tap Handled!!", nil);
}

@end

更新2：

将UITapGestureRecognizer添加到View的所有子视图都无法解决问题......

修复它!!!

行!!问题是CGRect for theView，它的宽度设置为0.0 !!!

Answer 1

你试过这个吗？

[view setUserInteractionEnabled:YES];

Answer 2

在.h文件中将视图声明为ivar。合成然后调用它：

[self.theview setMultipleTouchEnabled:YES];

不要忘记在viewDidLoad方法中分配和初始化该视图。

就是这样。

UITapGestureRecognizer无法添加到UIView？

2 个答案: