This application is a demo of some very simple Android functionality. It can be used in courses teaching Android development to beginners.
The applications keeps track of a single counter value. You could maybe use it to count people entering a venue, where you need to know how many are inside. It has a Decrease (-1) and Increase (+1) button, which changes the current counter value by one.
There is also a menu with two options. Reset will set the counter back to zero and an About takes the user to this web page on GitHub.
The application demonstrates the following features:
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Layouts to build Android UI.
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Automatic language selection of texts via xml files.
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Changing the text of a TextView.
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Responding to clicks on a Button.
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Using drawables to customize the appearence of visual elements.
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File handling, storing a binary integer in a file.
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Respond to the menu button, show a menu and react to a selected menu option.
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Show an alert with a message and a Yes/No choice.