求UIImagePickerController 调用设备的摄像头录像Demo或讲解地址

Question

uiimagepicker

Answer 1

调出摄像头拍摄视频：
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
    imagePickerController.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
    imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
    imagePickerController.allowsEditing = YES;
    imagePickerController.delegate = self;
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        [self presentViewController:imagePickerController animated:YES completion:NULL];
    }
拍摄完视频的代理
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    //获取视频的地址，该状态下视频并没有保存到硬盘
    NSURL *videoURL = info[UIImagePickerControllerMediaURL];
    
    //保存视频
      //方法1（保存到自定义路径）
    NSString *videoName = @"videoTest.mov";  //默认拍摄的视频格式为mov（如需要MP4等其他的格式，需要转码）
    NSURL *documentUrl = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
    NSURL *storeUrl = [documentUrl URLByAppendingPathComponent:videoName];
    NSData *movieData = [NSData dataWithContentsOfURL:videoURL];
    [movieData writeToURL:storeUrl atomically:YES];
    
      //方法2（保存到系统的视频存储地址）
//    UISaveVideoAtPathToSavedPhotosAlbum([videoURL path], nil, nil, nil);
    
    //结束拍摄
    [picker dismissViewControllerAnimated:YES completion:NULL];
}

Answer 2

顺便说下，需要添加库
#import <MobileCoreServices/MobileCoreServices.h>