iPhone SDK - 如何禁用UIImagePickerController中的圖片預覽？

Question

有沒有什麼辦法在使用UIImagePickerController拍攝照片後禁用圖像預覽？一旦用戶按下快門釋放按鈕，我想立即關閉ImagePicker。

Answer 1

我問過類似的問題here

我的解決方案是創建在默認UIImagePickerControllerView頂部的自定義視圖。

我下載的例子Augmented Reality

然後你可以將它們添加到您的項目中使用OverlayView.m和OverlayView.h： 我所做的自定義工具欄選擇器，選擇器和OverlayView的全球，這樣我可以訪問它們項目中的任何地方。

在你ViewController.h

@class OverlayView; 

@interface ViewController //bla bla... 
{ 
UIImagePickerController * picker; 
UIToolbar *toolBar; 
OverlayView *overlayView; 
} 

我創建工具欄的控制相機按鈕和取消按鈕

// toolbar - handy if you want to be able to exit from the image picker... 
      toolBar=[[[UIToolbar alloc] initWithFrame:CGRectMake(0, 480-55, 320, 55)] autorelease]; 
      toolBar.barStyle = UIBarStyleBlackOpaque; 
      NSArray *items=[NSArray arrayWithObjects: 
          [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelPicture)] autorelease], 
          [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil] autorelease], 
          [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(shootPicture)] autorelease], 
          [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil] autorelease], 
          [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil] autorelease], 
          nil]; 
      [toolBar setItems:items]; 

      // create the overlay view 
      overlayView=[[[OverlayView alloc] initWithFrame:CGRectMake(0, 0, 320, 480-44)] autorelease]; 
      // important - it needs to be transparent so the camera preview shows through! 
      overlayView.opaque=NO; 
      overlayView.backgroundColor=[UIColor clearColor]; 

        // parent view for our overlay 
     UIView *parentView=[[[UIView alloc] initWithFrame:CGRectMake(0,0,320, 480)] autorelease]; 
     [parentView addSubview:overlayView]; 
     [parentView addSubview:toolBar]; 

     // configure the image picker with our overlay view 
     picker=[[UIImagePickerController alloc] init]; 
     picker.sourceType = UIImagePickerControllerSourceTypeCamera; 

     // hide the camera controls 
     picker.showsCameraControls=NO; 
     picker.wantsFullScreenLayout = YES; 

的取消方法

- (IBAction)cancel { 
    // Don't pass current value to the edited object, just pop. 
    [self.navigationController popViewControllerAnimated:YES]; 
} 

的（shootPictureMethod ）：

-(void) shootPicture { 

    [picker takePicture]; 

} 

退出而不表示預覽只是駁回拍攝照片在didFinishPickingImage方法

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo 
{ 
//do whatever 

[self dismissModalViewControllerAnimated:YES]; 
}