[SOLVED] Accessing iOS Photo Folder

[carlinski]

Using Qt5.3

I know most of the folders for an App are sandboxed on iOS, however is it possible to get to the users photo folder? I want to give them the possibility of choosing a photo out of the camera roll.

[Gianluca]

You cannot directly using the Qt API, you have to use a iOS native API:

https://developer.apple.com/library/ios/documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html

You can easily mix C++ and objective-C code in a Qt project simply adding a '.mm' source file.
In .pro file:
@
OBJECTIVE_SOURCE += mysource.mm
@

and inside the .mm you can mix C++ with objective-C code like that:

@

void MyQtObjectClass::someMethod() {

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
... etc
}

}

@

[carlinski]

OK, that gives me something to work with. Will take a good look.

So would the code above give me direct access to the folder, so I can read the files?

Does anybody have any good examples of this?

Thanks.

[Gianluca]

On iOS you never get a direct access of things outside your app.
There is always an API that pass the control to iOS system and return to you with a result from the user.
In the case of UIImagePickerController, when you launch it, it will appear to the user a new screen (under the iOS control) where the user navigate and choose the picture and after that your app get only the image user chosen.
This is what I know.

For examples, try to look in the iOS documentation and tutorial there are a lot of examples.

https://developer.apple.com/Library/ios/documentation/AudioVideo/Conceptual/CameraAndPhotoLib_TopicsForIOS/Articles/PickinganItemfromthePhotoLibrary.html

[carlinski]

Thank you for that. That makes a lot more sense now.