使用PHAsset來獲取圖像以及視頻文件的大小
對于圖片資源
[[PHImageManager defaultManager]
requestImageDataForAsset:asset
options:nil
resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {
float imageSize = imageData.length; //convert to Megabytes
imageSize = imageSize/(1024*1024.0);
NSLog(@"%f",imageSize);
}];
對于視頻資源
PHVideoRequestOptions *options = [[PHVideoRequestOptions alloc] init];
options.version = PHVideoRequestOptionsVersionOriginal;
[[PHImageManager defaultManager]
requestAVAssetForVideo:asset
options:options
resultHandler:^(AVAsset *asset, AVAudioMix *audioMix, NSDictionary *info) {
if ([asset isKindOfClass:[AVURLAsset class]]) {
AVURLAsset* urlAsset = (AVURLAsset*)asset;
NSNumber *size;
[urlAsset.URL getResourceValue:&size forKey:NSURLFileSizeKey error:nil];
NSLog(@"size is %f",[size floatValue]/(1024.0*1024.0)); //size is 43.703005
}}];
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