废话不说，直接上代码吧
.h 文件
#import <Foundation/Foundation.h>
@interface SaveImageToPHAsset : NSObject
/**保存图片到自定义相册*/
- (void)saveImages:(NSArray *)imageArrs;
@end
.m文件
#import "SaveImageToPHAsset.h"
#import <Photos/Photos.h>
@interface SaveImageToPHAsset()
@property (nonatomic, strong) NSMutableArray *listOfDownLoadImageArr;
@end
@implementation SaveImageToPHAsset
- (NSMutableArray *)listOfDownLoadImageArr {
if (!_listOfDownLoadImageArr) {
_listOfDownLoadImageArr = [NSMutableArray array];
}
return _listOfDownLoadImageArr;
}
- (void)saveImages:(NSArray *)imageArrs {
for (int i = 0; i <imageArrs.count; i++) {
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:imageArrs[i]]];
UIImage *image = [UIImage imageWithData:data]; // 取得图片
[self.listOfDownLoadImageArr addObject:image];
}
PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
// 2.判断用户的授权状态
if (status == PHAuthorizationStatusNotDetermined) {
// 如果状态是不确定的话,block中的内容会等到授权完成再调用
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
// 授权完成就会调用
if (status == PHAuthorizationStatusAuthorized) {
//调用存储图片的方法
[self CWWSavePhotos];
}
}];
//如果允许访问
} else if (status == PHAuthorizationStatusAuthorized) {
//调用存储图片的方法
[self CWWSavePhotos];
//如果权限是拒绝
} else {
// 使用第三方框架,弹出一个页面提示用户去打开授权
[MBProgressHUD showText:@"进入设置打开允许访问相册开关" toView:nil];
}
}
- (void)CWWSavePhotos {
if (self.listOfDownLoadImageArr.count > 0) {
UIImage *image = [self.listOfDownLoadImageArr objectAtIndex:0];
[self savePhoto:image];
}
else {
}
}
#pragma mark - 该方法获取在图库中是否已经创建该App的相册
//该方法的作用,获取系统中所有的相册,进行遍历,若是已有相册,返回该相册,若是没有返回nil,参数为需要创建 的相册名称
- (PHAssetCollection *)fetchAssetColletion:(NSString *)albumTitle
{
// 获取所有的相册
PHFetchResult *result = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
//遍历相册数组,是否已创建该相册
for (PHAssetCollection *assetCollection in result) {
if ([assetCollection.localizedTitle isEqualToString:albumTitle]) {
return assetCollection;
}
}
return nil;
}
#pragma mark - 保存图片的方法
- (void)savePhoto:(UIImage *)imagePhoto
{
//修改系统相册用PHPhotoLibrary单粒,调用performChanges,否则苹果会报错,并提醒你使用
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
// 调用判断是否已有该名称相册
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
//以项目名字命名相册
NSString *app_Name = [infoDictionary objectForKey:@"CFBundleDisplayName"];
PHAssetCollection *assetCollection = [self fetchAssetColletion:app_Name];
//创建一个操作图库的对象
PHAssetCollectionChangeRequest *assetCollectionChangeRequest;
if (assetCollection) {
// 已有相册
assetCollectionChangeRequest = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:assetCollection];
} else {
// 1.创建自定义相册
assetCollectionChangeRequest = [PHAssetCollectionChangeRequest creationRequestForAssetCollectionWithTitle:app_Name];
}
// 2.保存你需要保存的图片到系统相册(这里保存的是_imageView上的图片)
PHAssetChangeRequest *assetChangeRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:imagePhoto];
// 3.把创建好图片添加到自己相册(ps:想保存到系统相册，就注释掉下边一行代码就ok)
//这里使用了占位图片,为什么使用占位图片呢
//这个block是异步执行的,使用占位图片先为图片分配一个内存,等到有图片的时候,再对内存进行赋值
PHObjectPlaceholder *placeholder = [assetChangeRequest placeholderForCreatedAsset];
[assetCollectionChangeRequest addAssets:@[placeholder]];
} completionHandler:^(BOOL success, NSError * _Nullable error) {
//弹出一个界面提醒用户是否保存成功
if (error) {
//[SVProgressHUD showErrorWithStatus:@"保存失败"];
} else {
// [SVProgressHUD showSuccessWithStatus:@"保存成功"];
[self.listOfDownLoadImageArr removeObjectAtIndex:0];
}
[self CWWSavePhotos];
}];
}
@end
调用的方法，直接引用头文件，传一个imageURL数组就可以了
[[SaveImageToPHAsset alloc] saveImages:_model.images];//保存图片到相册
