Write an app to select an image from the phone's gallery, and let the user decide if they like it.

Your first activity ...

• Immediately starts the gallery activity to select a photo (ala UseSystemActivity.java).

• If the user uses the phone's back button to leave the gallery no URI is returned.
• If a photo is selected the URI is returned.

• If no URI is returned then popup a Toast saying the user is a wimp, and finish.
• If a URI is returned it is sent to a second activity. You have to use getApplicationContext() instead of this when you create the Intent (because it's in the ActivityResultLauncher object, not just in the Activity object).

• Use getParcelableExtra to extract the Uri
• Display the photo (ala UseSystemActivity.java).
• Have two buttons, one for "like" and one for "dislike".
• Return a flag indicating which button the user pressed.

• If the flag is "dislike", or the user has pushed the back button, then loop back to the gallery to select another image for the user to evaluate.
• If the flag is "like" then popup a Toast saying that the user likes it and finish.

Use best practices for all aspects of the code!

Answer

• ChooseANicePhoto.apk