假设我有一个像
这样的视频网址http://example.com/1901728349.mp4
我通过以下程序从链接下载：
-(void)DownloadVideo
{
//download the file in a seperate thread.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSLog(@"Downloading Started");
NSString *urlToDownload = VIDEO_LINK;
// NSString *urlToDownload =@"http:\/\/example.com\/1901728349.mp4";
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:@"%@/%@", documentsDirectory,@"1901728349.mp4"];
NSLog(@"filePath %@",filePath);
filepathURL=filePath; // getting the video path
//saving is done on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(@"File Saved in document directory !");
});
}
});
}
之后我想将视频保存到我的库中：
- (void)saveVideoToLibrary{
NSString *albumName=@"DemoAlbum";
self.library = [[ALAssetsLibrary alloc] init];
[self.library addAssetsGroupAlbumWithName:albumName
resultBlock:^(ALAssetsGroup *group) {
NSLog(@"added album:%@", albumName);
}
failureBlock:^(NSError *error) {
NSLog(@"error adding album");
}];
[library writeVideoAtPathToSavedPhotosAlbum:
[NSURL fileURLWithPath:filepathURL] // here file path is the source path previously we got
completionBlock:^(NSURL *assetURL, NSError *error)
{
if (error)
NSLog(@"error %@",error);
else
NSLog(@"Success Your video clip is saved");
}];
}
请告诉我我的问题在哪里。请在这方面帮助我。
谢谢＆amp;问候 Tapash Mollick