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你好，我在相機應用程序正在處理。相機的UIImagePickerController凍結時翻轉並取消了幾次
我可以打開並正確使用相機。但我發現了一個錯誤：
當我打開相機，翻轉相機，再翻轉相機，然後按取消。做幾次（3 - 5）。再次打開相機，我有一個黑色的凍結屏幕幾秒鐘，如果你拍照，看到圖像，但屏幕繼續黑色。幾秒鐘後，相機再次出現，您可以繼續正常行爲。但我找不到解決辦法。
我搜索了很多在互聯網和找到一些答案，但沒有解決我的問題。
這裏類似的問題，但對我來說，解決沒有工作：
- Stackoverflow - UIImagePickerController Freezes when camera flips
- Stackoverflow - UIImagePicker freezes
- Stackoverflow - iOS 7 UIImagePicker preview black screen
- Stackoverflow - iDevice camera shows black instead of preview
而且我用DejalBezelActivityView創建一個微調區域標籤爲DejalBezelActivityView
有什麼想法？
我有我的.h聲明：
@property (nonatomic, strong) UIImagePickerController* picker;
- (void) takePhoto: (id)vc;
- (void) selectPhoto: (id)vc;
而且我.mm代碼：
@synthesize picker = _picker;
- (id) init{
self = [super init];
if (self){
self.picker = [[UIImagePickerController alloc] init];
}
return self;
}
- (void)takePhoto:(id)vc{
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
[VC_Camera showAlert];
return;
}
[self init];
self.picker.delegate = self;
self.picker.allowsEditing = YES;
self.picker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.picker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
[[VC_Camera getMainWindow] presentViewController:self.picker animated:YES completion:NULL];
}
- (void)selectPhoto:(id)vc{
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]){
[VC_Camera showAlert];
return;
}
[self init];
self.picker.delegate = self;
self.picker.allowsEditing = YES;
self.picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[[VC_Camera getMainWindow] presentViewController:self.picker animated:YES completion:NULL];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
self.picker = picker;
DejalActivityView * _activityView = [DejalBezelActivityView activityViewForView:[[UIApplication sharedApplication] keyWindow] withLabel:@"Loading"];
[self performSelector:@selector(cancelAfterDelay:) withObject:@{@"DejalAV":_activityView} afterDelay:1.0];
}
- (void) cancelAfterDelay:(NSDictionary*) dict
{
DejalActivityView* _activityView = [dict objectForKey:@"DejalAV"];
[DejalBezelActivityView removeViewAnimated:YES];
[self.picker dismissViewControllerAnimated:YES completion:nil];
}
感謝：d
[更新]
我嘗試使用UIImagePickerController作爲單例：
-(UIImagePickerController *) imagePicker{
if(!_imagePicker){
_imagePicker = [[UIImagePickerController alloc] init];
_imagePicker.delegate = self;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
_imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else{
_imagePicker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
}
}
return _imagePicker;
}
和問題仍然存在。