視頻上傳在iOS 4中，但不在iOS 5

Question

我有一個應用程序，我想從照片廚房中選擇照片或視頻，並將它們上傳到服務器。這適用於ios 4。代碼如下：

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

image_selected = FALSE; 
video_selected = FALSE; 
imagePicker.mediaTypes = [NSArray arrayWithObjects:(NSString *)kUTTypeImage,(NSString *)kUTTypeMovie, nil]; 

NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType]; 
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) { 
    image_selected = TRUE; 
    imageFrame = [info objectForKey:UIImagePickerControllerOriginalImage]; 
    NSLog(@"image1 has %@", imageFrame); 
    [image setImage:imageFrame]; 
}else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) { 
    video_selected = TRUE; 
    videoURL = [info objectForKey:UIImagePickerControllerMediaURL]; 
    NSLog(@"video has %@", videoURL); 
    MPMoviePlayerController *mp = [[MPMoviePlayerController alloc]initWithContentURL:videoURL]; 
    videoFrame = [[mp thumbnailImageAtTime:0.0 timeOption:MPMovieTimeOptionNearestKeyFrame]retain]; 
    [image setImage:videoFrame]; 
    [mp release]; 
} 
    [[picker parentViewController] dismissModalViewControllerAnimated:YES]; 
} 

但是，這在ios 5（模擬器或設備）中不起作用。當照片庫中的選擇按鈕被選中時，應用程序會凍結。

在這方面的任何幫助是非常必要的。

Answer 1

[picker dismissModalViewControllerAnimated:YES];