My application has the camera access permission by default.How can i turned it off and ask for permission?

Question

I am using camera in my application, and i want to ask for that trendy permission which every other app prompts. How can i get that ?

AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if(authStatus == AVAuthorizationStatusAuthorized) {
    // do your logic
    authorized = YES;
     [self actionLaunchAppCamera];

} else if(authStatus == AVAuthorizationStatusDenied){
    // denied
    authorized = NO;

} else if(authStatus == AVAuthorizationStatusRestricted){
    // restricted, normally won't happen
} else if(authStatus == AVAuthorizationStatusNotDetermined){
    // not determined?!
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
        if(granted){
            NSLog(@"Granted access to %@", AVMediaTypeVideo);



        } else {
            NSLog(@"Not granted access to %@", AVMediaTypeVideo);
        }
    }];
} else {
    // impossible, unknown authorization status
}

I am using the above code for checking authorization but it always go inside authorizedstatus condition as it has the permission already. I have checked from privacy settings the permission is already on. But i have never ask for the permission from user.

Thanks everyone.

Answer 1

Edit: Oh, I see what you mean. Then you need to create AVCaptureDeviceInput to see whether permission has been asked before. If not, this prompts the user for permission.

NSError outError = NULL;
AVCaptureDevice captureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
If (captureDevice != NULL) {
AVCaptureDeviceInput captureInput = [AVCaptureDeviceInput deviceInputfromDevice:captureDevice error:outError];
    If (captureInput != NULL && outError == NULL) {
        // we have permission to use the camera
    }
}

You don't have to uninstall the app to reset the access permission. Assuming your device is running iOS 8, simply go to the camera settings screen and disable the access:

1. Exit the app
2. Go to Settings -> Privacy -> Camera
3. Look for your app to turn the switch off
4. Run the app