Determine if Android app is being used for the first time

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You can use the SharedPreferences to identify if it is the “First time” the app is launched.
Just use a Boolean variable (“my_first_time”) and change its value to false when your task for “first time” is over.

This is my code to catch the first time you open the app:

final String PREFS_NAME = "MyPrefsFile";

SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);

if (settings.getBoolean("my_first_time", true)) {
    //the app is being launched for first time, do something        
    Log.d("Comments", "First time");

             // first time task

    // record the fact that the app has been started at least once
    settings.edit().putBoolean("my_first_time", false).commit(); 
}

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