相機有時會顯示黑屏

Question

我正在訪問我的應用程序的默認相機。有時它顯示黑屏。什麼是這個問題的解決方案？

if ([UIImagePickerController isSourceTypeAvailable: 
     UIImagePickerControllerSourceTypeCamera]) 
    { 
     imgPicker = [[UIImagePickerController alloc] init]; 
     imgPicker.delegate = self; 
     imgPicker.sourceType = UIImagePickerControllerSourceTypeCamera; 
//  imagePicker.mediaTypes = [NSArray arrayWithObjects:(NSString *) kUTTypeImage, nil]; 
     imgPicker.allowsEditing = NO; 
     imgPicker.showsCameraControls = NO; 
     cameraView.backgroundColor = [UIColor clearColor]; 
     imgPicker.cameraOverlayView = cameraView; 
     [self presentModalViewController:imgPicker animated:YES]; 

    } 

Answer 1

我認爲這個問題是你目前的UIImagePickerController實例的方式：

UIImagePickerController * imagePicker = [[UIImagePickerController alloc] init]; 
    imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; 
    imagePicker.delegate = self; 
    [self presentModalViewController:imagePicker animated:YES]; 
    // [picker release];