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copied!<p>You need to override <code>onSaveInstanceState(Bundle savedInstanceState)</code> and write the application state values you want to change to the <code>Bundle</code> parameter like this:</p> <pre><code>@Override public void onSaveInstanceState(Bundle savedInstanceState) { super.onSaveInstanceState(savedInstanceState); // Save UI state changes to the savedInstanceState. // This bundle will be passed to onCreate if the process is // killed and restarted. savedInstanceState.putBoolean("MyBoolean", true); savedInstanceState.putDouble("myDouble", 1.9); savedInstanceState.putInt("MyInt", 1); savedInstanceState.putString("MyString", "Welcome back to Android"); // etc. } </code></pre> <p>The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will get passed in to <code>onCreate()</code> and also <code>onRestoreInstanceState()</code> where you'd extract the values like this:</p> <pre><code>@Override public void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); // Restore UI state from the savedInstanceState. // This bundle has also been passed to onCreate. boolean myBoolean = savedInstanceState.getBoolean("MyBoolean"); double myDouble = savedInstanceState.getDouble("myDouble"); int myInt = savedInstanceState.getInt("MyInt"); String myString = savedInstanceState.getString("MyString"); } </code></pre> <p>You would usually use this technique to store instance values for your application (selections, unsaved text, etc.).</p>

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