'm trying to figure out to build myself a small tweak or add-on which allows me to import a picture from my local phone gallery into an app called "Jodel" that only supports taking pictures and uploading them like Snapchat. I have no clue so far how I should do it because I haven't made a tweak yet. All I know is that I need some kind of photo browser and/or picker and get that selected picture to be shown in the app instead of the picture of the live camera, in order to post it. I really want to make this tweak but so far I have no idea how and where to begin. Thanks in advance!