How can I execute something just once per application start?

Question

I\'d like to implement an update checker in an application, and I obviously only need this to show up once when you start the application. If I do the call in the onCr

Answer 1

I just solved doing this myself, I reopen my main activity multiple times throughout the application's execution. While the constructor is a valid approach for some things it doesn't let you access the current Application context to write toasts among other things.

My solution was to create a simple 'firstRun' boolean set to true in the class of my MainActivity, from there I run the contents of the if statement then set it to true. Example:

public class MainActivity extends AppCompatActivity
{
     private static boolean firstRun = true;

     @Override
     protected void onCreate(Bundle savedInstanceState)
     {
         if(firstRun)
         {
              Toast.makeText(getApplicationContext(), "FIRST RUN", Toast.LENGTH_SHORT).show();
              //YOUR FIRST RUN CODE HERE
         }
         firstRun = false;

         super.onCreate(savedInstanceState);
         //THE REST OF YOUR CODE
}