85 lines
2.5 KiB
Objective-C
Executable File
85 lines
2.5 KiB
Objective-C
Executable File
//
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// SJPhotoPickerManager.m
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// SJPhotoPickerDemo
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//
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// Created by Jaesun on 16/8/19.
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// Copyright © 2016年 S.J. All rights reserved.
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//
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#import "SJPhotoPickerManager.h"
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#import "SJAlbumModel.h"
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@interface SJPhotoPickerManager()
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@end
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@implementation SJPhotoPickerManager
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+ (instancetype)shareSJPhotoPickerManager {
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static SJPhotoPickerManager *manager = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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if (!manager) {
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manager = [[SJPhotoPickerManager alloc] init];
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}
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});
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return manager;
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}
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- (void)requestImageForPHAsset:(PHAsset *)asset targetSize:(CGSize)targetSize imageResult:(ImageBlcok)imageBlock {
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// 使用PHImageManager从PHAsset中请求图片
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PHImageManager *imageManager = [[PHImageManager alloc] init];
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PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
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options.resizeMode = PHImageRequestOptionsResizeModeExact;
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options.networkAccessAllowed = YES;
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[imageManager requestImageForAsset:asset targetSize:targetSize contentMode:PHImageContentModeAspectFit options:options resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
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if (result) {
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imageBlock(result);
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}
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}];
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}
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- (void)requestAlbumsWithType:(PHAssetCollectionType)type albumResult:(AlbumBlock)albumBlock {
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// 列出所有相册智能相册
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PHFetchResult *assetCollectionResult = [PHAssetCollection fetchAssetCollectionsWithType:type subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
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NSMutableArray *albumArray = [NSMutableArray array];
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// 这时 smartAlbums 中保存的应该是各个智能相册对应的 PHAssetCollection
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for (NSInteger i = 0; i < assetCollectionResult.count; i++) {
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// 获取一个相册（PHAssetCollection）
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PHCollection *collection = assetCollectionResult[i];
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if ([collection class] == [PHAssetCollection class]) {
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PHAssetCollection *assetCollection = (PHAssetCollection *)collection;
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PHFetchResult *assetResult = [PHAsset fetchAssetsInAssetCollection:assetCollection options:nil];
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if (assetResult.count != 0) {
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SJAlbumModel *model = [[SJAlbumModel alloc] init];
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model.title = collection.localizedTitle;
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model.assetResult = assetResult;
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[albumArray addObject:model];
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}
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}
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albumBlock(albumArray);
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}
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}
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@end
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