崩溃的iPad照片选取器

Question

我正在使用以下功能激活设备相机或图像选择器，具体取决于UIActionSheet的结果。 如果fromCamera = YES则适用于iPhone和iPad。 如果fromCamera = NO，那么它适用于iPhone并出现图像选择器。 但它在iPad上崩溃时出现以下错误： 此设备无法使用UIStatusBarStyleBlackTranslucent。 我已经知道iPad无法显示UIStatusBarStyleBlackTranslucent statusBar，但是如何避免这种崩溃呢？

-(void)addPhotoFromCamera:(BOOL)fromCamera{

if(fromCamera){    
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else{
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}


[self presentModalViewController:picker animated:YES];

}

Answer 1

如果您在iPad上将选择器设置为UIImagePickerControllerSourceTypePhotoLibrary，则必须（！）将其显示在popoverview中，否则您将获得例外。 我这样做，至少控制popover的大小（标准尺寸在我看来太小）：

-(void)openPhotoPicker
{
    imagePicker = [[UIImagePickerController alloc] init];
    imagePicker.delegate = self;
    imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    imagePicker.navigationBar.opaque = true;

    //put the image picker in its own container controller, to control its size
    UIViewController *containerController = [[UIViewController alloc] init];
    containerController.contentSizeForViewInPopover = rightPane.frame.size;
    [containerController.view addSubview:imagePicker.view];

    //then, put the container controller in the popover
    popover = [[UIPopoverController alloc] initWithContentViewController:containerController];

    //Actually, I would like to do the following, but iOS doesn't let me:
    //[rightPane addSubview:imagePicker.view];

    //So, put the popover over my rightPane. You might want to change the parameters to suit your needs.
    [popover presentPopoverFromRect:CGRectMake(0.0, 0.0, 10.0,0.0) 
                     inView:rightPane
    permittedArrowDirections:UIPopoverArrowDirectionLeft
                   animated:YES];

    //There seems to be some nasty bug because of the added layer (the container controller), so you need to call this now and each time the view rotates (see below)
    [imagePicker.view setFrame:containerController.view.frame];
}

我还有以下内容，以对抗旋转错误：

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    if(imagePicker!=nil && rightPane.frame.size.width>0)
        [imagePicker.view setFrame:imagePicker.view.superview.frame];
}

它并不完美，但目前我的测试目的还可以。 我考虑编写自己的Imagepicker，因为我不喜欢被迫使用popoverview ......但是，这是一个不同的故事。

Answer 2

我怀疑UIImagePicker是从Info.plist文件或当前显示的视图控制器继承半透明状态栏。

如果您使应用程序没有半透明状态栏会发生什么？

Answer 3

我遇到了类似的问题，请看一下我的答案：

https://stackoverflow.com/questions/7677058/uiimagepickercontroller-crash-in-ipad-ios5/7839969#7839969