iOS photo permissions to ask for second time

Question

I am currently using alasset which asks for permission for first time. If want to pop permission second time or every time when user has blocked it, how it is possible.

Answer 1

That dialog isn't controlled by the app, so no API for that.

You can reset things as a user in the settings app (IIRC) but no programmatic way.

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To get the current authorization status:

[ALAssetsLibrary authorizationStatus];

(+ (ALAuthorizationStatus)authorizationStatus)

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Also, methods to get assets taking access error blocks, e.g.:

- (void)assetForURL:(NSURL *)assetURL
        resultBlock:(ALAssetsLibraryAssetForURLResultBlock)resultBlock
       failureBlock:(ALAssetsLibraryAccessFailureBlock)failureBlock