删除UIImagePickerController生成的临时捕获视频

Question

我使用以下代码捕获UIImagePickerViewController中的视频：

- (IBAction)openVideoPicker:(id)sender {
    self.video_picker = [[UIImagePickerController alloc] init];
    self.video_picker.delegate = self;
    self.video_picker.allowsEditing = YES;
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        self.video_picker.sourceType = UIImagePickerControllerSourceTypeCamera;
        self.video_picker.mediaTypes = [NSArray arrayWithObjects:(NSString *)kUTTypeMovie, nil];
    }
    else
    {
        self.video_picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    }
    [self presentViewController:self.video_picker animated:YES completion:nil];
}

当我浏览Sand Box中的文件时，/MyApp/tmp/capture文件夹中会捕获大量视频。因为它们占用了相当多的文件大小。什么时候会删除这些临时文件？或者我可以通过编程手动删除它们吗？

Answer 1

基于this comment，您可以通过编程方式执行此操作：

NSString *videoPath = @""; // path to your video
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath: videoPath]) {
    NSError *error;
    // Attempt to delete the folder containing videoPath
    if ([fileManager removeItemAtPath: [videoPath stringByDeletingLastPathComponent] error: &error] != YES) {
        NSLog(@"Unable to delete file: %@", [error localizedDescription]);
    }
}