[原]iOS7.1获取图库所有照片的方法封装

图片转换取出需要转换方向！！

 

- (int)imageOrientation {

     return [[self valueForProperty:ALAssetPropertyOrientation] intValue];

}

 

 

//高清图

- (UIImage *)fastGetFullResolutionImage {

    CGImageRef ref = [[self  defaultRepresentation] fullResolutionImage];

    return [UIImage imageWithCGImage:ref scale:1 orientation:[self imageOrientation]];

}

 

 

简单类快捷入口：链接: http://pan.baidu.com/s/1bnxvsiN 密码: 73ud

 

//出处：http://www.cnblogs.com/madordie/
//
//  声明：写此类时候只为了获取图库中的图片。由于真机不在手边，只在模拟器上测试（iOS7.1）
//       如需要获得其他视频之类的可以自行更改fillAssetGroups函数
//

//
//  本地照片管理
//  (单例模式)
//  用法：
//JGPhotoAlbumManager *manager = [JGPhotoAlbumManager shared];
//[manager setSaveAllPhotos:^(NSArray *images) {
//    if (!_tableData) {
//        _tableData = [[NSMutableArray alloc] init];
//    }
//    [_tableData removeAllObjects];
//    [_tableData addObjectsFromArray:images];
//    [_tableView reloadData];
//}];
//
//  cell 填充：
//ALAsset *asset = _tableData[indexPath.row];
//[cell.imageView setImage:[asset fastGetThumbnailImage]];
//注：
//fastGetThumbnailImage为自定义类别，见#import "ALAsset+JGFastGetPhoto.h"
//

关键代码：

    //如果需要获取别的更改下面的addObject位置
#pragma mark - 填充 _assetGroups
- (void)fillAssetGroups {
    ALAssetsLibrary *assetsLibrary = [JGPhotoAlbumManager sharedAssetsLibrary];//生成整个photolibrary句柄的实例
    [assetsLibrary enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:^(ALAssetsGroup *group, BOOL *stop) {//获取所有group
        if (group) {
            [group enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {//从group里面
                NSString* assetType = [result valueForProperty:ALAssetPropertyType];
                if ([assetType isEqualToString:ALAssetTypePhoto]) {
                    NSLog(@"Photo");
                    [_assetGroups addObject:result];
                }else if([assetType isEqualToString:ALAssetTypeVideo]){
                    NSLog(@"Video");
                }else if([assetType isEqualToString:ALAssetTypeUnknown]){
                    NSLog(@"Unknow AssetType");
                }
                
                NSDictionary *assetUrls = [result valueForProperty:ALAssetPropertyURLs];
                NSUInteger assetCounter = 0;
                for (NSString *assetURLKey in assetUrls) {
                    NSLog(@"Asset URL %lu = %@",(unsigned long)assetCounter,[assetUrls objectForKey:assetURLKey]);
                }
                
                NSLog(@"Representation Size = %lld",[[result defaultRepresentation]size]);
            }];
        } else {            
            //stop
            dispatch_async(dispatch_get_main_queue(), ^(void) {
                _saveAllPhotos(_assetGroups);
            });
        }
        
    } failureBlock:^(NSError *error) {
        NSLog(@"Enumerate the asset groups failed.");
    }];
}

@interface ALAsset (JGFastGetPhoto)
//图片URL
- (NSString *)fastGetURLString;
- (NSURL *)fastGetURL;
//缩略图
- (UIImage *)fastGetThumbnailImage;
//全屏图
- (UIImage *)fastGetFullScreenImage;
//高清图
- (UIImage *)fastGetFullResolutionImage;
//获取时间
- (NSString *)fastGetDataString;


//缩略图
- (UIImage *)fastGetThumbnailImage {
    CGImageRef  ref = [self thumbnail];
    return [UIImage imageWithCGImage:ref];
}