从iPhone库中挑选视频无法在iOS模拟器上运行。在真正的iPhone上试试吧。

Picking videos from the iPhone Library does not work on the iOS Simulator. Try it on a real iPhone.

以下是从我在项目中使用的iOS Photo Library中挑选视频的代码。只需将选择器中的视频方法添加到所需的按钮。

Here is the code for picking video from the iOS Photo Library which I have used in my projects. Just add video method from selector to your desired button.

- (void)video {
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    imagePicker.delegate = self;
    imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    imagePicker.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeMovie,      nil];

    [self presentModalViewController:imagePicker animated:YES];
 }


- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    NSString *mediaType = [info objectForKey: UIImagePickerControllerMediaType];

    if (CFStringCompare ((__bridge CFStringRef) mediaType, kUTTypeMovie, 0) == kCFCompareEqualTo) {
        NSURL *videoUrl=(NSURL*)[info objectForKey:UIImagePickerControllerMediaURL];
        NSString *moviePath = [videoUrl path];

        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum (moviePath)) {
            UISaveVideoAtPathToSavedPhotosAlbum (moviePath, nil, nil, nil);
        }
    }

    [self dismissModalViewControllerAnimated:YES];
    [picker release];
}

字符串 moviepath 为您提供所选视频的路径，可用于对该视频执行任何所需操作。

The string moviepath gives you the path of the selected video which can be used to perform any desired action with that video.

不要忘记添加 MobileCoreServices .framework 项目框架！然后像这样导入：

Don't forget to add the MobileCoreServices.framework Framework to your project! Then import it like this:

#import <MobileCoreServices/UTCoreTypes.h>