xcode - 如何从iphone库导入视频并在应用程序中播放

Question

我正在使用以下代码来显示视频库

 -(IBAction)showVideoLibrary
{
UIImagePickerController *videoPicker = [[UIImagePickerController alloc] init];
videoPicker.delegate = self;
videoPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

videoPicker.mediaTypes =[[NSArray alloc] initWithObjects: (NSString *)kUTTypeMovie,nil];    
if(self.popoverController!=nil)
{
    [self.popoverController release];
}
self.popoverController  = [[UIPopoverController alloc] initWithContentViewController:videoPicker];
popoverController.delegate = self;
popoverController.popoverContentSize=CGSizeMake(320,1000);

[popoverController presentPopoverFromRect:CGRectMake(0,0,10,10) inView:self.view permittedArrowDirections:nil animated:YES];

}

并且为了接收选定的视频网址，我正在使用以下功能

- (void)imagePickerController: (UIImagePickerController *)picker2 didFinishPickingMediaWithInfo: (NSDictionary *)info {

NSString *mediaType = [info valueForKey:UIImagePickerControllerMediaType];
if([mediaType isEqualToString:@"public.movie"])
{
    NSLog(@"came to video select...");

     NSURL *videoUrl=(NSURL*)[info objectForKey:@"UIImagePickerControllerMediaURL"];

    NSLog(@"Got Movie Url==%@",videoUrl);


}

这是我正在使用的代码，我可以看到库中存在的视频列表，但是当我按下“使用”按钮时，它显示正在压缩视频..我无法取消它，而且我没有得到任何类型的网址在

- (void)imagePickerController: (UIImagePickerController *)picker2 didFinishPickingMediaWithInfo: (NSDictionary *)info

功能.. 解决这个问题的任何想法.. 并在应用程序中获取 url。

谢谢。

Answer 1

在真正的 iPhone 设备上试用

这是我在我的项目中使用的从 iPhone 库中挑选视频的代码

只需将选择器中的视频方法添加到您想要的按钮

  -(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) 
     {

     NSString *moviePath = [[info objectForKey:UIImagePickerControllerMediaURL] path];

       NSURL *videoUrl=(NSURL*)[info objectForKey:UIImagePickerControllerMediaURL];
     // NSLog(@"%@",moviePath);

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


     [self dismissModalViewControllerAnimated:YES];

     [picker release];


     }

不要忘记添加移动核心服务框架

并导入

 #import <MobileCoreServices/UTCoreTypes.h>

字符串“moviepath”为您提供该 iPhone 中视频的路径，然后对该视频执行任何所需的操作。在字符串电影路径中完成压缩后，您将获得视频路径，“videourl”是该视频的 url 播放该视频

 MPMoviePlayerController *player =[[MPMoviePlayerController alloc] initWithContentURL: url];   //  give here the "videourl"  
    [[player view] setFrame: [self.view bounds]];  
    [self.view addSubview: [player view]];
    [player play];