关于ios9中得ALAssetsLibrary框架过时问题

最新推荐文章于 2021-04-09 11:22:49 发布

原创最新推荐文章于 2021-04-09 11:22:49 发布 · 7.2k 阅读

CC 4.0 BY-SA版权

在 iOS9 中，ALAssetsLibrary 框架已过时，应使用 Photos 框架进行资产管理。本文介绍了如何使用 Photos 框架替代 ALAssetsLibrary 来保存视频。提供的代码示例展示了在 iOS9 中如何将视频保存到相册，包括创建资产请求、获取占位符和添加到相册的步骤。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

用Photos框架代替。

其中：保存视频的代码：

ALAssetsLibrary *assetsLibrary=[[ALAssetsLibrary alloc]init];

[assetsLibrary writeVideoAtPathToSavedPhotosAlbum:mediaUrl completionBlock:^(NSURL *assetURL, NSError *error) {

if (!error) {

NSLog(@"视频保存成功");

}

else

{

NSLog(@"视频保存失败");

}

}];

ios9中得代码：(不确定正确性)

[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{

// Request creating an asset from the image.

PHAssetChangeRequest *createAssetRequest = [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:mediaUrl];

PHFetchResult *result=[PHAsset fetchAssetsWithALAssetURLs:[NSArray arrayWithObject:mediaUrl] options:nil];

PHAssetCollection *assetColection=[[PHAssetCollection fetchAssetCollectionsContainingAsset:[result lastObject] withType:PHAssetCollectionTypeAlbum options:nil] lastObject];

// Request editing the album.

PHAssetCollectionChangeRequest *albumChangeRequest = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:assetColection];

// Get a placeholder for the new asset and add it to the album editing request.

PHObjectPlaceholder *assetPlaceholder = [createAssetRequest placeholderForCreatedAsset];

[albumChangeRequest addAssets:@[ assetPlaceholder ]];

} completionHandler:^(BOOL success, NSError *error) {

NSLog(@"Finished adding asset. %@", (success ? @"Success" : error));

}];