即使从 Appdelegate 声明后，UIImagePickerController 仍存在问题

Question

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我们正在做一个使用 UIImagePickerController 的照片应用程序。为了仅维护控制器的一个实例，我们在 appdelegate 中声明了它。但即使在这样做之后，内存泄漏仍然存在。有谁可以帮助我们吗
这是我们的代码

在 AppDelegate.h

UIImagePickerController *imagePicker;
@property (nonatomic, retain) UIImagePickerController *imagePicker;

在 AppDelegate.m

@synthesize imagePicker;

和 applicationDidFinishLaunching 事件中

imagePicker = [[[UIImagePickerController alloc] init] autorelease];

需要在 CameraView 中调用此 UIImagePicker 在 CameraView.h

在

RedDawnMediaAppDelegate *appDel;
@property (nonatomic, retain) RedDawnMediaAppDelegate *appDel;

CameraView.m

@synthesize appDel;

和

appDel=(RedDawnMediaAppDelegate*)[[UIApplication sharedApplication] delegate];

appDel.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
// Hide the camera controls:
appDel.imagePicker.showsCameraControls = NO;
appDel.imagePicker.navigationBarHidden = YES;
appDel.imagePicker.delegate = self;

// Make the view full screen:
appDel.imagePicker.wantsFullScreenLayout = YES;
appDel.imagePicker.cameraViewTransform =       CGAffineTransformScale(appDel.imagePicker.cameraViewTransform, CAMERA_TRANSFORM_X, CAMERA_TRANSFORM_Y);

// Now incert our overlay view (it has to be here cuz it's a modal view):
appDel.imagePicker.cameraOverlayView = overlayView;

[self presentModalViewController:appDel.imagePicker animated:YES];

在 didFinishPickingMediaWithInfo 中

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

[appDelegate.imagePicker dismissModalViewControllerAnimated:YES];

uploadImage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; 
[uploadImage retain];
NSData *imageData = UIImageJPEGRepresentation(uploadImage, 0.5);
//[uploadImage release];
UIImage *image=[UIImage imageWithData:imageData];


self.view.frame = CGRectMake(0, 0, 320, 480);
self.wantsFullScreenLayout = YES;
objCameraImageView = [[CameraImageView alloc] initWithNibName:@"CameraImageView" bundle:[NSBundle mainBundle]];
[objCameraImageView setParentController:self];
objCameraImageView.cameraImage = image;
[image release];
uploadImage = nil;
[self.view addSubview:objCameraImageView.view];
[self release];
}

的 viewDidLoad拍摄照片后，我们将在另一个视图中显示预览。所以我们多次调用Cameraview，这导致内存泄漏，请帮助。

Answer 1

首先，您无需担心仅维护一个 imagepickercontroller 实例。从相机获取图像比您正在做的事情简单得多。

请参阅我的帖子：

如何从相机和相机拍照通过编程方式保存在照片库中？

因为我在获取图像完成后释放了选择器。不会有内存泄漏！