Objective c 如何在iOS 9 objective c中从iPhone摄像头录制视频？

您好，我需要构建一个应用程序，用于从iPhone摄像头录制视频。
我在网上搜索，没有发现在iOS 9中有效的notting。 我从这个git项目中获得以下代码：

此代码打开相机，但不允许我拍摄视频

- (IBAction)recordButton:(id)sender {

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

    UIImagePickerController *picker = [[UIImagePickerController alloc]init];
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    picker.delegate = self;
    picker.allowsEditing = NO;

    NSArray *mediaTypes = [[NSArray alloc]initWithObjects:(NSString *)kUTTypeMovie, nil];

    picker.mediaTypes = mediaTypes;

    [self presentViewController:picker animated:YES completion:nil];

} else {

    UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:nil message:@"I'm afraid there's no camera on this device!" delegate:nil cancelButtonTitle:@"Dang!" otherButtonTitles:nil, nil];
    [alertView show];
    }
}

 - (IBAction)playbackButton:(id)sender {

// pick a video from the documents directory
NSURL *video = [self grabFileURL:@"video.mov"];

// create a movie player view controller
MPMoviePlayerViewController * controller = [[MPMoviePlayerViewController alloc]initWithContentURL:video];
[controller.moviePlayer prepareToPlay];
[controller.moviePlayer play];

// and present it
[self presentMoviePlayerViewControllerAnimated:controller];

}


#pragma mark - Delegate Methods

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

// user hit cancel
[self dismissViewControllerAnimated:YES completion:nil];
}

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

// grab our movie URL
NSURL *chosenMovie = [info objectForKey:UIImagePickerControllerMediaURL];

// save it to the documents directory
NSURL *fileURL = [self grabFileURL:@"video.mov"];
NSData *movieData = [NSData dataWithContentsOfURL:chosenMovie];
[movieData writeToURL:fileURL atomically:YES];

// save it to the Camera Roll
UISaveVideoAtPathToSavedPhotosAlbum([chosenMovie path], nil, nil, nil);

// and dismiss the picker
[self dismissViewControllerAnimated:YES completion:nil];

}

- (NSURL*)grabFileURL:(NSString *)fileName {

// find Documents directory
NSURL *documentsURL = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];

// append a file name to it
documentsURL = [documentsURL URLByAppendingPathComponent:fileName];

return documentsURL;
}

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这方面的指导很好。希望能有所帮助。

对此提供了很好的指导。希望有帮助。

我编辑了问题。我编辑了问题。