ios相册照片排序（iOS相册多选）

之前写过UIImagePickerController调取系统相册图片（选取单张照片，多用于用户头像）

1.pod导入

1	`pod` `'CTAssetsPickerController'`

2.添加头文件

1	`#import <CTAssetsPickerController/CTAssetsPickerController.h>`

3.添加delegate

1	`<CTAssetsPickerControllerDelegate>`

4.实现

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 - (void)upLoading { [PHPhotoLibraryrequestAuthorization:^(PHAuthorizationStatus status){ if (status !=PHAuthorizationStatusAuthorized)return; dispatch_async(dispatch_get_main_queue(), ^{ CTAssetsPickerController *picker = [[CTAssetsPickerControlleralloc] init]; picker.delegate =self; // 显示选择的索引 picker.showsSelectionIndex =YES; // 设置相册的类型：相机胶卷 +自定义相册 picker.assetCollectionSubtypes =@[ @(PHAssetCollectionSubtypeSmartAlbumUserLibrary), @(PHAssetCollectionSubtypeAlbumRegular)]; // 不需要显示空的相册 picker.showsEmptyAlbums =NO; [selfpresentViewController:pickeranimated:YEScompletion:nil]; }); }]; } -(BOOL)assetsPickerController:(CTAssetsPickerController *)picker shouldSelectAsset:(PHAsset *)asset { NSInteger max =9; if (picker.selectedAssets.count >= max) { UIAlertController *alert = [UIAlertControlleralertControllerWithTitle:@"提示"message:[NSStringstringWithFormat:@"最多选择%zd张图片", max] preferredStyle:UIAlertControllerStyleAlert]; [alert addAction:[UIAlertActionactionWithTitle:@"好的"style:UIAlertActionStyleDefaulthandler:nil]]; [picker presentViewController:alertanimated:YEScompletion:nil]; // 这里不能使用self来modal别的控制器，因为此时self.view不在window上 returnNO; } returnYES; } -(void)assetsPickerController:(CTAssetsPickerController *)picker didFinishPickingAssets:(NSArray *)assets { NSArray *array =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES); NSString *documents = [arraylastObject]; NSString *documentPath = [documentsstringByAppendingPathComponent:@"arrayXML.xml"]; NSArray *dataArray = [NSArrayarrayWithArray:assets]; [dataArray writeToFile:documentPathatomically:YES]; NSArray *resultArray = [NSArrayarrayWithContentsOfFile:documentPath]; NSLog(@"%@", documentPath); // 关闭图片选择界面 [picker dismissViewControllerAnimated:YEScompletion:nil]; // 遍历选择的所有图片 self.plCollection.photoArray = assets; for (NSInteger i =0; i < assets.count; i++) { // 基本配置 CGFloat scale = [UIScreenmainScreen].scale; PHImageRequestOptions *options = [[PHImageRequestOptionsalloc] init]; options.resizeMode =PHImageRequestOptionsResizeModeExact; options.deliveryMode =PHImageRequestOptionsDeliveryModeHighQualityFormat; PHAsset *asset = assets[i]; CGSize size =CGSizeMake(asset.pixelWidth / scale, asset.pixelHeight / scale); // // 获取图片 [[PHImageManagerdefaultManager] requestImageForAsset:assettargetSize:size contentMode:PHImageContentModeDefaultoptions:options resultHandler:^(UIImage *_Nullable result,NSDictionary *_Nullable info) { NSData *imageData =UIImageJPEGRepresentation([selfimageWithImageSimple:resultscaledToSize:CGSizeMake(200,200)], 0.5); [selfossUpload:imageData]; }]; } }