2
edits
Changes
→Activity Lifecycle
== Activity Lifecycle ==
<source lang="java">
package cs.ecl.mobile.android.simple;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;
public class ActivityLifecycle extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Toast.makeText(this, " onCreate", Toast.LENGTH_SHORT).show();
}
@Override
protected void onStart() {
super.onStart();
Toast.makeText(this, " onStart", Toast.LENGTH_SHORT).show();
}
@Override
protected void onResume() {
super.onResume();
Toast.makeText(this, " onResume", Toast.LENGTH_SHORT).show();
}
@Override
protected void onRestart() {
super.onRestart();
Toast.makeText(this, " onRestart", Toast.LENGTH_SHORT).show();
}
@Override
protected void onPause() {
Toast.makeText(this, "onPause", Toast.LENGTH_SHORT).show();
super.onPause();
}
@Override
protected void onStop() {
Toast.makeText(this, "onStop", Toast.LENGTH_SHORT).show();
super.onStop();
}
@Override
protected void onDestroy() {
Toast.makeText(this, "onDestroy", Toast.LENGTH_SHORT).show();
super.onDestroy();
}
}
</source>
Run the app and try to understand the sequences of message based on diagram from [http://d.android.com/guide/topics/fundamentals/activities.html android developers site]
[[Image:activity_lifecycle_1.png|700px]]
The entire source code for this application could be found at: [https://zenit.senecac.on.ca/svn/ecl500/Lectures/trunk/w11-mobile-android-simple/ sample that illustrates the activity]
