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在我的应用程序中,我向cameraOverlayViewcamerapicker 添加了一个。它包含三个子视图,两个UIButtons和一个UIImageView。图像是可拖动的。这些按钮用于将图像更改为另一个图像。

当我触摸一个按钮或图像时,相机的点击对焦矩形将始终显示在下方(并且实际焦点会改变)。在所有三个子视图上设置exclusiveTouchYES不会改变行为。

任何想法,我怎样才能阻止相机选择器触摸我的按钮/覆盖视图的子视图(但仍然可以触摸对焦、切换相机等)?

提供更多信息。我正在使用以下代码,以允许在具有覆盖视图的同时进行相机交互,这些子视图仍然可以触摸。

// CameraOverlayView.m

[...]

// ignore touches on this view, but not on the subviews
-(id)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    id hitView = [super hitTest:point withEvent:event];
    if (hitView == self) return nil;
    else return hitView;
}
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1 回答 1

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我发现有几种方法可以阻止这种情况。没有一种方法能完全按照我的意愿去做。但是调整它应该会给你一些有用的东西。

1.) 禁用相机控制。cameraPickerController.showsCameraControls = NO;这最终将取消触摸以从屏幕聚焦,但它也会取消其他控件。

2.) 控制覆盖视图中的 hitTest 并将这些区域设置为零。这个解决方案很尴尬,但对我有用。

这是我管理面罩的overlayView

- (id)initWithFrame:(CGRect)frame imagePicker: (UIImagePickerController *) imagepicker{
    self = [super initWithFrame:frame];
    if (self) {
        faceMaskButton = [UIButton buttonWithType:UIButtonTypeCustom];
        faceMaskButton.backgroundColor = [UIColor colorWithRed:1 green:1 blue:1 alpha:.2];
        faceMaskButton.frame = CGRectMake(10, 10, 70, 35);
        faceMaskButton.layer.borderColor = [[UIColor colorWithRed:0 green:0 blue:0 alpha:.6] CGColor];
        faceMaskButton.layer.borderWidth = 1;
        faceMaskButton.layer.cornerRadius = 17;
        [faceMaskButton setImage:[UIImage imageNamed:@"Facemask button"] forState:UIControlStateNormal];
        [faceMaskButton addTarget:self action:@selector(facemask) forControlEvents:UIControlEventTouchDown];
        faceMaskButton.exclusiveTouch = YES;
        faceMaskButton.autoresizingMask = UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin;
        [self addSubview:faceMaskButton];
        loadingFacemask = NO;

        overlayImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Camera Face Overlay"]];
        overlayImage.frame = CGRectMake((self.bounds.size.width - 400)/2, (self.bounds.size.height - 400)/3, 400, 400);
        overlayImage.autoresizingMask = UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin;
        overlayImage.alpha = 0.9f;
        [self addSubview:overlayImage];

        imagePickerController = imagepicker;
    }
    return self;
}

- (void) facemask{
    if (!loadingFacemask) {
        loadingFacemask = YES;
        [UIView animateWithDuration:.3 animations:^{
            overlayImage.alpha = overlayImage.alpha? 0:1;
            faceMaskButton.backgroundColor = [UIColor colorWithRed:1 green:1 blue:1 alpha:1];
        } completion:^(BOOL finished) {
            faceMaskButton.backgroundColor = [UIColor colorWithRed:1 green:1 blue:1 alpha:.2];
            loadingFacemask = NO;
        }];
    }
}
-(UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{
    if ((self.bounds.size.height - 44)<point.y){
        return imagePickerController.view;
    }

    if (point.x < faceMaskButton.bounds.origin.x + faceMaskButton.bounds.size.width +10 && point.y < faceMaskButton.bounds.origin.y + faceMaskButton.bounds.size.height + 10) {
        [self facemask];
        return nil;
    }

    return self;
}

因此,如果您进行调整,这将对您有用。我仍在寻找能够在没有所有黑客攻击的情况下完成这项工作的魔杖。仍然没有迹象:(

于 2012-07-26T14:57:39.117 回答