Android Activity Life cycle State Changes Example
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | package com.example.programmingknowledge.myfirstapp; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.EditText; import android.widget.TextView; import android.util.Log; public class MainActivity extends ActionBarActivity { private static final String MY_TAG = "the_custom_message"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Log.i(MY_TAG,"onCreate"); } @Override protected void onStart() { super.onStart(); Log.i(MY_TAG, "onStart"); } @Override protected void onResume() { super.onResume(); Log.i(MY_TAG, "onResume"); } @Override protected void onPause() { super.onPause(); Log.i(MY_TAG, "onPause"); } @Override protected void onStop() { super.onStop(); Log.i(MY_TAG, "onStop"); } @Override protected void onRestart() { super.onRestart(); Log.i(MY_TAG, "onRestart"); } @Override protected void onDestroy() { super.onDestroy(); Log.i(MY_TAG, "onDestroy"); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } } |
ANDROID ACTIVITY LIFE CYCLE http://developer.android.com/reference/android/app/Activity.html#ActivityLifecycle
Managing the Activity Lifecycle
Starting an Activity | Android Developers
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