234 lines
9.7 KiB
Objective-C
Executable File
234 lines
9.7 KiB
Objective-C
Executable File
//
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// WFPhotoAlbum.m
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// WFPhotoPicker
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//
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// Created by Asura on 16/9/4.
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// Copyright © 2016年 fengwang. All rights reserved.
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//
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#import "WFPhotoAlbum.h"
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#import <AssetsLibrary/AssetsLibrary.h>
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#import "PopView.h"
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typedef void(^WFPhotoAlbumSuccess)(WFCacheModel *);
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typedef void(^WFPhotoAlbumBlock)();
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#define IPHONE_IOS [[[UIDevice currentDevice] systemVersion] floatValue]
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@interface WFPhotoAlbum ()
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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@property (nonatomic, strong) ALAssetsLibrary *ssetLibrary;
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@property (nonatomic, copy) WFPhotoAlbumSuccess success;
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@property (nonatomic, copy) WFPhotoAlbumBlock modelBlock;
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@end
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@implementation WFPhotoAlbum
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+ (WFPhotoAlbum *)standarWFPhotosAlbum{
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static WFPhotoAlbum *_photosAlbum = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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_photosAlbum = [[self alloc] init];
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});
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return _photosAlbum;
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}
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- (void)getCameraSuccess:(void (^)(WFCacheModel *))success{
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_success = [success copy];
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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if (IPHONE_IOS < 8.0) {
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[self wf_getPhotosBefore];
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}else{
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[self wf_getPhotosLater];
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}
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});
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}
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- (WFCacheModel *)modelWithResult:(id)result{
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WFCacheModel *model = [[WFCacheModel alloc] init];
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model.result = result;
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return model;
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}
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- (void)getAssetsFromFetchResult:(id)result
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completion:(void (^)(NSArray<WFAlumbModel *> *))completion{
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NSMutableArray *photos = [NSMutableArray array];
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if ([result isKindOfClass:[ALAssetsLibrary class]]) {
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[_ssetLibrary enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
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if (group) {
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[group setAssetsFilter:[ALAssetsFilter allPhotos]];
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if (group.numberOfAssets > 0) {
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[group enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {
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//ALAsset的类型
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NSString *assetType = [result valueForProperty:ALAssetPropertyType]; if ([assetType isEqualToString:ALAssetTypePhoto]){
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[photos addObject:[WFAlumbModel modelWithAsset:result]];
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}
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}];
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dispatch_async(dispatch_get_main_queue(), ^{
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completion ? completion(photos) : nil;
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_modelBlock ? _modelBlock() : nil;
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[PopView dissmissPopview];
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});
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}
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}else{
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//没有相册列表资源,输出提示
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dispatch_async(dispatch_get_main_queue(), ^{
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[PopView dissmissPopview];
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// [PopView initWithTitle:@"提示" content:@"没有相册资源" buttonTitle:@[@"知道了!"] success:^{
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//
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// } failure:^{
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//
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// }];
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});
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}
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} failureBlock:^(NSError *error) {
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}];
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}else{
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if ([result isKindOfClass:[PHFetchResult class]]) {
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PHFetchResult *fetchResult = (PHFetchResult *)result;
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[fetchResult enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
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PHAsset *asset = (PHAsset *)obj;
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[photos addObject:[WFAlumbModel modelWithAsset:asset]];
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if (fetchResult.count == photos.count) {
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dispatch_async(dispatch_get_main_queue(), ^{
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[PopView dissmissPopview];
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});
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completion ? completion(photos) : nil;
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}
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}];
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}
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}
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}
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- (PHImageRequestID)getPhotosWithAsset:(id)asset
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originalImage:(BOOL)originalImage
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completion:(void (^)(UIImage *))completion{
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CGSize size;
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if (originalImage) {
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size = PHImageManagerMaximumSize;
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}else{
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size = CGSizeMake(125 * [UIScreen mainScreen].scale, 125 * [UIScreen mainScreen].scale);
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}
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if ([asset isKindOfClass:[PHAsset class]]) {
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// 修复获取图片时出现的瞬间内存过高问题
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// 下面两行代码，来自hsjcom，他的github是：https://github.com/hsjcom 表示感谢
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PHImageRequestOptions *option = [[PHImageRequestOptions alloc] init];
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option.resizeMode = PHImageRequestOptionsResizeModeFast;
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PHImageRequestID imageRequestID = [[PHImageManager defaultManager] requestImageForAsset:asset targetSize:size contentMode:PHImageContentModeAspectFill options:option resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
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BOOL downloadFinined = (![[info objectForKey:PHImageCancelledKey] boolValue] && ![info objectForKey:PHImageErrorKey]);
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if (downloadFinined && result) {
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if (!originalImage) {
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result = [self wf_thumbnailsCutfullPhoto:result];
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}
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completion ? completion(result) : nil;
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}
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}];
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return imageRequestID;
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}else{
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ALAssetRepresentation *assetRepresentation =[asset defaultRepresentation];
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CGImageRef imageReference;
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if (originalImage) {
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imageReference = [assetRepresentation fullScreenImage];
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}else{
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imageReference = ((ALAsset *)asset).thumbnail;
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}
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if (imageReference != nil) completion ? completion([UIImage imageWithCGImage:imageReference]) : nil;
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}
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return 0;
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}
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- (void)wf_getPhotosBefore{
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//获取当前应用对相册的访问授权状态
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ALAuthorizationStatus authorizationState = [ALAssetsLibrary authorizationStatus];
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// 如果没有获取访问授权，或者访问授权状态已经被明确禁止，则显示提示语，引导用户开启授权
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if (authorizationState == ALAuthorizationStatusRestricted || authorizationState == ALAuthorizationStatusDenied) {
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[self wf_alerPhotos];
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}else{
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dispatch_async(dispatch_get_main_queue(), ^{
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[PopView initWithWaitingString:@"加载中..."];
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});
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_ssetLibrary = [[ALAssetsLibrary alloc] init];
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__block WFCacheModel *model = [self modelWithResult:_ssetLibrary];
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__weak typeof(self)weakSelf = self;
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dispatch_async(dispatch_get_main_queue(), ^{
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weakSelf.modelBlock = ^(){
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weakSelf.success ? weakSelf.success(model) : nil;
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};
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});
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}
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}
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- (void)wf_getPhotosLater{
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//权限
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PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
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if (status == PHAuthorizationStatusDenied || status == PHAuthorizationStatusRestricted) {
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[self wf_alerPhotos];
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}else{
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[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
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if (status == PHAuthorizationStatusAuthorized) {
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dispatch_async(dispatch_get_main_queue(), ^{
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[PopView initWithWaitingString:@"加载中..."];
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});
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__block WFCacheModel *model;
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PHFetchOptions *option = [[PHFetchOptions alloc] init];
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option.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"modificationDate" ascending:NO]];
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PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeSmartAlbumUserLibrary options:nil];
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for (PHAssetCollection *collection in smartAlbums) {
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if ([collection.localizedTitle isEqualToString:@"Camera Roll"] || [collection.localizedTitle isEqualToString:@"相机胶卷"] || [collection.localizedTitle isEqualToString:@"所有照片"] || [collection.localizedTitle isEqualToString:@"All Photos"]) {
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PHFetchResult *fetchResult = [PHAsset fetchAssetsInAssetCollection:collection options:option];
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model = [self modelWithResult:fetchResult];
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dispatch_async(dispatch_get_main_queue(), ^{
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_success ? _success(model) : nil;
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});
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break;
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}
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}
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}
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}];
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}
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}
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- (void)wf_alerPhotos{
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NSDictionary *mainInfoDictionary = [[NSBundle mainBundle] infoDictionary];
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NSString *appName = [mainInfoDictionary objectForKey:@"CFBundleDisplayName"];
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NSString *alerString = [NSString stringWithFormat:@"请在设备的\"设置-隐私-照片\"选项中，允许%@访问你的手机相册", appName];
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// 展示提示语
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dispatch_async(dispatch_get_main_queue(), ^{
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[PopView initWithTitle:@"提示" content:alerString buttonTitle:@[@"知道了!"] success:^{
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} failure:^{
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}];
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});
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}
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//裁剪图片,此处裁剪为125*125大的图,即为我们的缩略图
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- (UIImage *)wf_thumbnailsCutfullPhoto:(UIImage*)fullPhoto
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{
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CGSize newSize;
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CGImageRef imageRef = nil;
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if ((fullPhoto.size.width / fullPhoto.size.height) < 1) {
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newSize.width = fullPhoto.size.width;
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newSize.height = fullPhoto.size.width * 1;
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imageRef = CGImageCreateWithImageInRect([fullPhoto CGImage], CGRectMake(0, fabs(fullPhoto.size.height - newSize.height) / 2, newSize.width, newSize.height));
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} else {
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newSize.height = fullPhoto.size.height;
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newSize.width = fullPhoto.size.height * 1;
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imageRef = CGImageCreateWithImageInRect([fullPhoto CGImage], CGRectMake(fabs(fullPhoto.size.width - newSize.width) / 2, 0, newSize.width, newSize.height));
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}
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UIImage *image = [UIImage imageWithCGImage:imageRef];
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CGImageRelease(imageRef);
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return image;
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}
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#pragma clang diagnostic pop
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@end
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