ios – “imagePickerController：didFinishPickingMediaWithInfo：”“UIImagePickerControllerMediaURL”信息字典中的关键奇怪行为

概述在“imagePickerController：didFinishPickingMediaWithInfo：”中,信息字典有时没有键“UI ImagePickerControllerMediaURL”.有时确实有.我试过清理目标,但这没有帮助.此外,工作流程始终相同：我按照相同的步骤从库中选择相同的视频文件.有时候信息字典中有“UIImagePickerControllerMediaURL”键,有 在“imagePickerController：dIDFinishPickingMediawithInfo：”中,信息字典有时没有键“UI ImagePickerControllerMediaURL”.有时确实有.我试过清理目标,但这没有帮助.此外,工作流程始终相同：我按照相同的步骤从库中选择相同的视频文件.有时候信息字典中有“UIImagePickerControllerMediaURL”键,有时“UIImagePickerControllerMediaURL”在同一文件的信息字典本身中不存在.无法理解.有人可以帮忙吗？

当我从照片库中选择视频/电影时,这是我的NSLog信息词典：

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

解决方法

- (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];}

总结

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