UIImagePickerController的cameraOverlayView在iPad上无法全屏显示

Question

这是我的代码：

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.showsCameraControls = NO;
picker.allowsEditing = NO;
picker.delegate = self;
picker.navigationBarHidden = YES;
picker.toolbarHidden = YES;
picker.wantsFullScreenLayout = YES;

UIView *overlay = [[UIView alloc] initWithFrame:CGRectZero];
overlay.backgroundColor = [UIColor greenColor];
overlay.alpha = 0.3;
overlay.clipsToBounds = NO;

UIButton *takePictureButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 1024, 1024)];
[takePictureButton addTarget:self action:@selector(takePictureButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
takePictureButton.backgroundColor = [UIColor purpleColor];
[overlay addSubview:takePictureButton];

picker.cameraOverlayView = overlay;
[takePictureButton release];
[overlay release];

_currentPicker = picker;
[self presentModalViewController:picker animated:YES];
[picker release];

看起来就像在iPad 2上的iOS 4.3.2中:
抱歉，我不能发布图片
我想要的是当用户点击屏幕任何位置时，它可以拍照。
请原谅我的英语不好。

- qiz

Answer 1

我自己解决了这个问题：在呈现UIImagePickerController后，只需重置cameraOverlayView的大小即可。
代码如下：

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.showsCameraControls = NO;
picker.allowsEditing = NO;
picker.delegate = self;

UIButton *takePictureButton = [[UIButton alloc] initWithFrame:CGRectZero];
[takePictureButton addTarget:self action:@selector(takePictureButtonPressed:) forControlEvents:UIControlEventTouchUpInside];

picker.cameraOverlayView = takePictureButton;
[self presentModalViewController:picker animated:YES];

takePictureButton.frame = CGRectMake(0, 0, 1024, 1024);

[picker release];
[takePictureButton release];

虽然不太优雅，但它能工作 :)

- qiz

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这里没有任何区别。 - Camus