从UIViewController返回后，UIImagePickerController获得白屏

Question

情况如下：

从

拍照后

[UIImagePickerController takePicture];

以下委托功能：

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

将被调用。

里面的代码是

NSLog(@"Photo taken");
UIImage *newImage = [self resizeImage:[info objectForKey:UIImagePickerControllerOriginalImage]];
NSLog(@"Width: %d, Height: %d ",(int)newImage.size.width, (int)newImage.size.height);
//[imagePickerController dismissModalViewControllerAnimated:YES];
ProcessCompleteView *pcv = [[ProcessCompleteView alloc] initWithNibName:@"ProcessCompleteView" bundle:nil];
[imagePickerController presentModalViewController:pcv animated:YES];
[pcv release];

我已经调用了另一个视图来显示......当我使用 dismissModalViewController 从pcv返回时，应该显示相机实时捕获的区域变为白色。但是，当我关闭 UIImagePickerController 并再次呈现它时，相机工作正常！

任何人都可以帮我解决这个奇怪的问题吗？

感谢。

Answer 1

显示视图的顺序不正确。

正确的顺序是： 父控制器的视图显示 - ＆gt; UIImagePickerController的视图显示 - ＆gt; UIImagePickerController的隐藏视图 - ＆gt; ProcessCompleteView show

所以，请删除

ProcessCompleteView *pcv = [[ProcessCompleteView alloc] initWithNibName:@"ProcessCompleteView" bundle:nil];
[imagePickerController presentModalViewController:pcv animated:YES];
[pcv release];

进入父控制器的viewWillAppear方法，然后调用

ProcessCompleteView *pcv = [[ProcessCompleteView alloc] initWithNibName:@"ProcessCompleteView" bundle:nil];
[parentController presentModalViewController:pcv animated:YES];
[pcv release];