touchesBegan和touchesMoved卡住了

Question

我在我的应用中使用此代码来识别特定UIView上的触摸和拖动，

现在我有一个问题，如果我进行触摸并立即拖动touchesMoved只调出3-4次并停止然后touchesCancelled调用，但如果我触摸屏幕等一秒钟，然后每次手指移动时拨打touchesMoved。

修改

我在iphone 4s上测试了它，并且使用这个设备它完美无缺，在ipod4中仍然存在问题。两个设备都是5.01。

   -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
            NSArray* touchArray = [touches allObjects];

        UITouch* touch = [touchArray objectAtIndex:0];
        CGPoint point = [touch locationInView:self.view];
        UIView *tmp = [self.view hitTest:point withEvent:event];

        if (tmp == volumeViewBackground) {
            //do something
        }else {
            NSLog(@"err");
        }

     }

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
    NSArray* touchArray = [touches allObjects];

    UITouch* touch = [touchArray objectAtIndex:0];
    CGPoint point = [touch locationInView:self.view];
    UIView *tmp = [self.view hitTest:point withEvent:event];

    if (tmp == volumeViewBackground) {
        //do something
    }else {
        NSLog(@"err");
    }
}

-(void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{ 
    NSLog(@"error");
}

Answer 1

根据UIResponder Class Reference尝试拨打super。

   -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

        [super touchesBegan: touches withEvent: event];

        NSArray* touchArray = [touches allObjects];

        UITouch* touch = [touchArray objectAtIndex:0];
        CGPoint point = [touch locationInView:self.view];
        UIView *tmp = [self.view hitTest:point withEvent:event];

        if (tmp == volumeViewBackground) {
            //do something
        }else {
            NSLog(@"err");
        }

     }

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{

    [super touchesMoved: touches withEvent: event];

    NSArray* touchArray = [touches allObjects];

    UITouch* touch = [touchArray objectAtIndex:0];
    CGPoint point = [touch locationInView:self.view];
    UIView *tmp = [self.view hitTest:point withEvent:event];

    if (tmp == volumeViewBackground) {
        //do something
    }else {
        NSLog(@"err");
    }
}

-(void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{ 

   [super touchesCancelled: touches withEvent: event]; 

   NSLog(@"error");
}