iOS 14 相册适配PHAuthorizationStatusNotDetermined

1.

#import <PhotosUI/PhotosUI.h>

 

Info.plist 中设置
“PHPhotoLibraryPreventAutomaticLimitedAccessAlert”的值为 YES 来阻止该弹窗反复弹出

 2.iOS14之后获取相册授权状态的方法

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if (@available(iOS 14, *)) {     [PHPhotoLibrary requestAuthorizationForAccessLevel:PHAccessLevelReadWrite handler:^(PHAuthorizationStatus status) {         dispatch_async(dispatch_get_main_queue(), ^{             ///用户已授权此应用程序有限的照片库访问权限             if (status == PHAuthorizationStatusLimited) {                              }else{                               }         });     }]; }

　　

 

3.第一种使用方法，和QQ一样，推荐使用

不在 Info.plist 阻止弹窗弹出， 使用监听获取回调

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1. 实现PHPhotoLibraryChangeObserver   @interface AddWatermarkViewController ()<PHPhotoLibraryChangeObserver>   2. 注册监听 - (void)viewDidLoad {     [super viewDidLoad];     [[PHPhotoLibrary sharedPhotoLibrary] registerChangeObserver:self]; }4. 注销监听 - (void)viewWillDisappear:(BOOL)animated{     [super viewWillDisappear:animated];     [[PHPhotoLibrary sharedPhotoLibrary] unregisterChangeObserver:self]; }

/// PHPhotoLibrary监听: 选择图片之后的回调

#pragma mark-   PHPhotoLibraryChangeObserver

- (void)photoLibraryDidChange:(PHChange *)changeInstance{

    ///一定要在主线程刷新：这里是异步监听

    dispatch_async (dispatch_get_main_queue (), ^{

        [self reloadSelectedAssetCollection:nil];

    });

}

　　

 

 

2.自定义控制器，此方法选了之后去 设置中查看， 还是没效果。。 原因待查

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1. 设置代理 PHPickerViewControllerDelegate @interface AddWatermarkViewController ()< PHPickerViewControllerDelegate>     2.手动显示弹窗 - (void)showAlert{     @WeakObj(self);     if (@available(iOS 14, *)) {<br>　　　　///14之后想着授权状态方法：异步的         [PHPhotoLibrary requestAuthorizationForAccessLevel:PHAccessLevelReadWrite handler:^(PHAuthorizationStatus status) {             dispatch_async(dispatch_get_main_queue(), ^{                 @StrongObj(self);                 if (status == PHAuthorizationStatusLimited) {                     PHPickerConfiguration *configuration = [[PHPickerConfiguration alloc] init];                     configuration.filter = [PHPickerFilter imagesFilter]; // 可配置查询用户相册中文件的类型，支持三种 imagesFilter 表示 只显示图片                     configuration.selectionLimit = 0; // 默认为1，为0时表示可多选。                                           PHPickerViewController *picker = [[PHPickerViewController alloc] initWithConfiguration:configuration];                     picker.delegate = self;                     [self presentViewController:picker animated:YES completion:nil];                 }             });         }];     } }   //点击取消或者完成的回调 - (void)picker:(PHPickerViewController *)picker didFinishPicking:(NSArray<PHPickerResult *> *)results API_AVAILABLE(ios(14)){     [picker dismissViewControllerAnimated:YES completion:nil];     if (!results || !results.count) {         return;     }     [self reloadSelectedAssetCollection:self.selectedAssetCollection];     NSLog(@"didFinishPicking"); }

　　

参考：

iOS14 适配 先行者

https://www.jianshu.com/p/a0b0303962bb

 

iOS14 隐私适配及部分解决方案

https://www.jianshu.com/p/1803bd950b90?devtype=android