Ios &引用；imagePickerController:didFinishPickingMediaWithInfo:"&引用；UIImagePickerControllerMediaURL“；信息字典中的关键奇怪行为

在“

imagePickerController:didFinishPickingMediaWithInfo:

”中，信息字典有时没有键“

UIImagePickerController-DiaUrl

”。有时它确实有。我试着清理目标，但没用。而且，工作流程总是一样的：我按照相同的步骤从库中选择相同的视频文件。有时信息字典中有“

UIImagePickerControllerMediaURL

”键，有时同一文件的信息字典本身中没有“

UIImagePickerControllerMediaURL

”。我不明白。有人能帮忙吗

这是我从照片库中选择视频/电影时信息字典的

NSLog

：

info dict = {
    UIImagePickerControllerMediaType = "public.movie";
    UIImagePickerControllerReferenceURL = "assets-library://asset/asset.MOV?id=1000000466&ext=MOV";
} 

---

当您的帐户在iCloud上保存视频时会发生这种情况。当您选择视频时，它将临时从icloud下载并显示给您，这样UIImagePickerControllerMediaURL就不会出现。

但它会显示UIImagePickerControllerMediaType=“public.movie”；在我的日志中。如果你的媒体类型是mov，那么它的url也不会发生。这发生在iPhone 4上，有2GB的可用空间，iOS 6.1，有+2分钟的视频。对于拥有600MB可用空间的iPhone5，对于同样长度的视频，这种情况是不会发生的。我认为这可能与设备上缺少用于保存临时压缩视频的可用空间有关，但这并不能说明问题。有人有解决方案吗？上浮的答案似乎根本不理解这个问题。

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

{ 
    NSMutableDictionary *infoDict = [[NSMutableDictionary alloc]init];

    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

    if ([mediaType isEqualToString:@"public.image"]){

        UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"" message:@"You Select a image Please select Movie" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];

        [myAlertView show];

        [myAlertView release];

    }

    else if ([mediaType isEqualToString:@"public.movie"]){

        NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];

        mAppDelegate.uploadType = @"Video";

        NSData *webData = [NSData dataWithContentsOfURL:videoURL];

        [infoDict setValue:webData forKey:@"VideoUrl"];

        [infoDict setValue:[[mAppDelegate.userInfoArray objectAtIndex:1]valueForKey:@"user_id"] forKey:@"user_id"];

        [[WakeUpParsing sharedInstance] assignSender:self];

        [[WakeUpParsing sharedInstance] startParsingForVedioUploade:infoDict];

    }

    [picker dismissModalViewControllerAnimated:YES];

    [infoDict release];

}


- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

    // Dismiss the image selection and close the program
    [[picker parentViewController] dismissModalViewControllerAnimated:YES];

}