从 ALAsset 中取出属性

 

#pragma mark -  从相册数组中取出所有的 图片数据

-(NSMutableArray *)getImageFromAlbumArray:(NSArray *)albumArr

{

    NSMutableArray *imageArray = [[NSMutableArray alloc]init];

    if (albumArr && [albumArr count]!=0) {

        

        for (int i=0;i<[albumArr count];i++) {

            ALAsset *  assetPhotos = [albumArr objectAtIndex:i];

            //类型， Location , 时长，方向，日期，格式 ， URL地址

            NSString * nsALAssetPropertyType = [ assetPhotos valueForProperty:ALAssetPropertyType ] ;

            NSString * nsALAssetPropertyLocation = [ assetPhotos valueForProperty:ALAssetPropertyLocation ] ;//拍照地址

            NSString * nsALAssetPropertyDuration = [ assetPhotos valueForProperty:ALAssetPropertyDuration ] ;

            NSString * nsALAssetPropertyOrientation = [ assetPhotos valueForProperty:ALAssetPropertyOrientation ] ;

            NSString * nsALAssetPropertyDate = [ assetPhotos valueForProperty:ALAssetPropertyDate ] ;

            NSString * nsALAssetPropertyRepresentations = [ assetPhotos valueForProperty:ALAssetPropertyRepresentations ] ;

            NSString * nsALAssetPropertyURLs = [ assetPhotos valueForProperty:ALAssetPropertyURLs ] ;

            NSString * nsALAssetPropertyAssetURL = [ assetPhotos valueForProperty:ALAssetPropertyAssetURL ] ;

            

            NSLog(@"**************** ALAsset Date : %@  , URLs : %@ ",nsALAssetPropertyDate,nsALAssetPropertyURLs );

            

            

            //type:ASSET_PHOTO_ASPECT_THUMBNAIL 取大图会造成内存溢出

            UIImage *tempImg  = [ASSETHELPER  getImageFromAsset:assetPhotos  type:ASSET_PHOTO_ASPECT_THUMBNAIL];

            [imageArray addObject:tempImg];

        }

        

    }

    

    

    return imageArray;

}