iphone - NSInvalidArgumentException – 当我尝试将捕获的视频复制到文档文件夹时应用程序终止

Question

我想尝试一下群众的智慧……因为我现在很沮丧。提前致谢。

这是我的代码:

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

NSLog(@"信息:%@",info);

NSString *newFilename = [NSString stringWithFormat:@"%@/%@.mov", [NSHomeDirectory() stringByAppendingPathComponent:@"文档"], [NSString stringWithFormat:@"%d", (long)[[NSDate date] timeIntervalSince1970]]];

NSLog(@"newFilename: %@",newFilename);

NSFileManager *filemgr = [NSFileManager defaultManager];

NSError *err; if ([filemgr copyItemAtPath:[info objectForKey:@"UIImagePickerControllerMediaURL"] toPath:newFilename 错误:&err] == YES) NSLog(@"移动成功"); 别的 NSLog(@"移动失败");

这是日志:

 2010-05-16 18:19:01.975 erlkoenig[7099:307] info: {
    UIImagePickerControllerMediaType = "public.movie";
    UIImagePickerControllerMediaURL = "file://localhost/private/var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/tmp/-Tmp-/capture-T0x108cb0.tmp.8M81HU/capturedvideo.MOV";
   }
newFilename: /var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/Documents/1274026741.mov

[NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90

Answer 1

我可以理解您的逻辑，但有一个基本问题:这不是保存视频的方式。

请参阅下面的粗略示例，无需进行相关错误检查。

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

{

    .... code here .....

    NSString* videoURL= [info objectForKey:UIImagePickerControllerMediaURL];

    //remember to test that the video is compatible for saving to the photos album

    UISaveVideoAtPathToSavedPhotosAlbum(videoURL, self, @selector(video:didFinishSavingWithError:contextInfo:), nil);

    .... code here .....

}