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POUnderstanding android activity lifecycle
 

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    <p>I have a problem with the lifecycle of my android activity. When I press the button "home", the function onDestroy() is calling. I have test with a simple hello world and Toast on callback function.</p> <p>My code : </p> <pre><code> public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toast.makeText(getApplicationContext(), "onCreate", Toast.LENGTH_SHORT).show(); } @Override protected void onRestart(){ super.onRestart(); Toast.makeText(getApplicationContext(), "onRestart", Toast.LENGTH_SHORT).show(); } @Override protected void onStart(){ super.onStart(); Toast.makeText(getApplicationContext(), "onStart", Toast.LENGTH_SHORT).show(); } @Override protected void onResume(){ super.onResume(); Toast.makeText(getApplicationContext(), "onResume", Toast.LENGTH_SHORT).show(); } @Override protected void onStop(){ super.onStop(); Toast.makeText(getApplicationContext(), "onStop", Toast.LENGTH_SHORT).show(); } @Override protected void onDestroy(){ super.onDestroy(); Toast.makeText(getApplicationContext(), "onDestroy", Toast.LENGTH_SHORT).show(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } } </code></pre> <p>EDIT : When I run my application, I have the toast "onCreate", "onState" then "onResume. If I press "home" buton I see the toast "onStop". If I return on my application I have the toast "onStart" and "onResume". But when I run my application on my real device (Samsung GT-P3110), I have the toast "onCreate", "onState" then "onResume. If I press "home" buton I see the toast "onStop" and "onDestroy". (My application is alway visible on the list of running application) If I return on the application, it see "onCreate" -> onState" -> "onResume" like it completly restart.</p> <p>I don't understand. Can you enlighten me please ?</p>
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