IOS-获取设备本地音视频
目录
IOS 获取设备本地音视频
1、检索音视频
PHFetchOptions *allPhotosOptions;
@property (nonatomic, strong) PHFetchResult *assetsFetchResults;
if (allPhotosOptions == nil) {
allPhotosOptions = [[PHFetchOptions alloc] init];
allPhotosOptions.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:YES]];
}
self.assetsFetchResults = [PHAsset fetchAssetsWithMediaType:PHAssetMediaTypeImage options:allPhotosOptions];其中 assetsFetchResults存储了所有的图片信息，
PHAssetMediaTypeImage为搜索图片的类型，同样的搜索其他类的可以根据
typedef NS_ENUM(NSInteger, PHAssetMediaType) {
PHAssetMediaTypeUnknown = 0,
PHAssetMediaTypeImage = 1,
PHAssetMediaTypeVideo = 2,
PHAssetMediaTypeAudio = 3,
} NS_ENUM_AVAILABLE_IOS(8_0);2、获取图片UIImage
[[PHCachingImageManager defaultManager] requestImageForAsset:asset
targetSize:AssetGridThumbnailSize
contentMode:PHImageContentModeAspectFill
options:nil
resultHandler:^(UIImage *result, NSDictionary *info) {
// Set the cell's thumbnail image if it's still showing the same asset.
if ([cell.representedAssetIdentifier isEqualToString:asset.localIdentifier]) {
cell.thumbnailImage = result;
}
}];asset为 assetsFetchResults中 的一个 PHAsset，
targetSize是获取图片的大小，这个根据你显示的方式设置，如果需要获取图片其他信息比如标题可以采用
[phAsset valueForKey:@"filename"];3、播放视频
-(void)setVideoAsset:(PHAsset *)videoAsset
{
_videoAsset = videoAsset;
[[PHImageManager defaultManager] requestPlayerItemForVideo:_videoAsset options:nil resultHandler:^(AVPlayerItem * _Nullable playerItem, NSDictionary * _Nullable info) {
self.currentItem = playerItem;
[self.player replaceCurrentItemWithPlayerItem:self.currentItem];
[self.currentItem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:nil];
}];
}