2021获取相册权限的逻辑

 PHAuthorizationStatus authStatus = [PHPhotoLibrary authorizationStatus];
       if(authStatus == PHAuthorizationStatusNotDetermined) {
           //如果不加这个，就会既有自定义弹窗和系统弹窗
           [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
               
               if (status == PHAuthorizationStatusNotDetermined) {

                [self successSaveLibraryNetworkWithIsSaveLibrary:NO];

               } else if (status == PHAuthorizationStatusRestricted) {
                [self successSaveLibraryNetworkWithIsSaveLibrary:NO];

                } else if (status == PHAuthorizationStatusDenied) {

                [self successSaveLibraryNetworkWithIsSaveLibrary:NO];

                } else {

                }
           }];

       }else if (authStatus == PHAuthorizationStatusDenied || authStatus == PHAuthorizationStatusRestricted){
           [self userCustomWindowForNotOpenLibrary];
       }else
       {
           [self successSaveLibraryNetworkWithIsSaveLibrary:YES];
       }

//    UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil message:@"需要你的图库的权限" preferredStyle:UIAlertControllerStyleAlert];
//        UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
//            //do something
//        }];
//        UIAlertAction *requestAction = [UIAlertAction actionWithTitle:@"同意" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
//            dispatch_async(dispatch_get_global_queue(0, 0), ^{
//                [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
//                    if (status == PHAuthorizationStatusAuthorized) {
//                        NSLog(@"用户同意授权相册");
//                    }else {
//                        NSLog(@"用户拒绝授权相册");
//                    }
//                    dispatch_async(dispatch_get_main_queue(), ^{
//                        //do something
//                    });
//                }];
//
//            });
//        }];
//        [alert addAction:cancelAction];
//        [alert addAction:requestAction];
//        [self presentViewController:alert animated:YES completion:nil];