objective-c – 在UIImagePickerController中点击使用后保存视频

发布时间：2020-12-16 10:20:10 所属栏目：百科来源：网络整理

导读：我有一个调用UI ImagePickerController的应用程序,你使用控制器拍摄视频.拍摄视频后,我希望在UIImagePickerController中单击使用后将视频保存到相机胶卷中. 你能帮助我吗？哦,UIImagePickerController附带切换到视频的选项,默认照片.我希望这只是视频,而不

我有一个调用UI ImagePickerController的应用程序,你使用控制器拍摄视频.拍摄视频后,我希望在UIImagePickerController中单击使用后将视频保存到相机胶卷中.

你能帮助我吗？

哦,UIImagePickerController附带切换到视频的选项,默认照片.我希望这只是视频,而不是照片.

我目前的代码是：

picker.sourceType=UIImagePickerControllerCameraCaptureModeVideo;
picker.mediaTypes=[UIImagePickerController availableMediaTypesForSourceType:picker.sourceType];

解决方法

实施以下委托方法后,按“使用”按钮可将录制的视频保存到相机胶卷.

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

    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    NSURL *recordedVideoURL= [info objectForKey:UIImagePickerControllerMediaURL];
    if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:recordedVideoURL]) {
        [library writeVideoAtPathToSavedPhotosAlbum:recordedVideoURL
                               completionBlock:^(NSURL *assetURL,NSError *error){}
        ];
    } 
    [library release];

}

使用以下命令将捕获模式设置为视频：

imagePickerController.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;

以下是我用于启动视频录制图像选择器的完整代码：

UIImagePickerController * imagePickerController = [[UIImagePickerController alloc] init];

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])  {
    imagePickerController.mediaTypes =  [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
    imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
    imagePickerController.showsCameraControls = YES;
    imagePickerController.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
    imagePickerController.delegate = self;
    imagePickerController.cameraDevice = UIImagePickerControllerCameraDeviceFront;
    [self presentModalViewController:imagePickerController animated:YES];

}

（编辑：李大同）

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