3. Write an app that displays an ImageView and plus and minus buttons as shown below. The ImageView contains a level list drawable that is a battery level indicator. Pressing the plus or minus button changes the level of the indicator. Use the battery icons from the Vector Asset Studio to represent 7 different values for the battery level. The app should have the following properties: - The plus button increments the level, causing the battery indicator to appear fuller. - The minus button decrements the level, causing the indicator to empty one level