我正在尝试使用UIImagePickerController让我的用户选择照片或拍摄照片来在我的应用程序中使用。但是,每当用户从他们的照片中选择一张图片或选择使用拍摄的照片时,应用程序似乎大多数情况下都会崩溃。我使用了NSZombie对象,并得到了这个消息:
[NSISRestrictedToNonNegativeVariable retain]: message sent to deallocated instance 0x168c3530
我不知道这里发生了什么。当我偶尔呈现模态视图时,也会出现同样的问题。
这是我呈现UIImagePickerController和处理响应的代码:
[NSISRestrictedToNonNegativeVariable retain]: message sent to deallocated instance 0x168c3530
我不知道这里发生了什么。当我偶尔呈现模态视图时,也会出现同样的问题。
这是我呈现UIImagePickerController和处理响应的代码:
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if ([[actionSheet buttonTitleAtIndex:buttonIndex] isEqualToString:CANCEL_TITLE]) {
return;
}
UIImagePickerControllerSourceType sourceType = buttonIndex == 0 ? UIImagePickerControllerSourceTypePhotoLibrary : UIImagePickerControllerSourceTypeCamera;
UIImagePickerController* controller = [[UIImagePickerController alloc] init];
controller.sourceType = sourceType;
[controller setDelegate:self];
if (buttonIndex == 1) {
//PNCoverOverlayView* overlayView = [PNCoverOverlayView viewWithNibNamed:nil];
//[controller setCameraOverlayView:overlayView];
[controller setShowsCameraControls:YES];
}
[self presentViewController:controller animated:YES completion:nil];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[picker dismissViewControllerAnimated:YES completion:^{
UIImage* originalImage = info[UIImagePickerControllerOriginalImage];
_imageToUpload = originalImage;
CGFloat scaleAdjust = ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] && [[UIScreen mainScreen] scale] == 2) ? 0.5 : 1;
CGFloat length = LENGTH * scaleAdjust;
if ([picker sourceType] == UIImagePickerControllerSourceTypeCamera) {
PNCoverOverlayView* overlay = (PNCoverOverlayView*)[picker cameraOverlayView];
CGSize overlaySize = [overlay frame].size;
UIImage* cropped = [UIImage imageCroppedToSize:overlaySize fromImage:originalImage];
_imageToUpload =[UIImage imageResizedToSize:CGSizeMake(length, length) fromImage:cropped];
} else {
_imageToUpload = [UIImage imageScaledToMaximumLength:length fromImage:originalImage];
}
[self performSegueWithIdentifier:@"reviewPhotoUpload" sender:self];
}];
}
我注释掉了向UIImagePickerController添加自定义叠加层的代码,因为这样做解决了在呈现UIImagePickerController时应用程序崩溃的问题。