Android™ How to Program, Second Edition

6.6. MainActivity Subclass of Activity

Class MainActivity (Fig. 6.5) is host for the Cannon Game app’s CannonGameFragment. In this app, we override only Activity method onCreate, which inflates the GUI.

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 1   // MainActivity.java 2   // MainActivity displays the CannonGameFragment 3   package com.deitel.cannongame; 4  5   import android.app.Activity; 6   import android.os.Bundle; 7  8   public class MainActivity extends Activity 9   {10      // called when the app first launches11      @Override12      public void onCreate(Bundle savedInstanceState)13      {14         super.onCreate(savedInstanceState); // call super's onCreate method15         setContentView(R.layout.activity_main); // inflate the layout16      } ...