Android Open Source - 2014-Droid-code My Activity Life Cycle Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package cs518.sample.activityLifecycle;
//  w  ww  . j a  v a2s . co  m
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
/*
 * In Activity2 we use the instanceStateBundle to maintain the counter information
 * In MyActivityLifeCycleActivity.java we do not save any state. 
 * note the run time differences, when/is the counter reset 
 * 
 */

public class MyActivityLifeCycleActivity extends Activity {
  protected int counter = 0;

  public static final String TAG = "LIFECYC";

  /** Called when the activity is first created. */
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.d(TAG, "onCreate() ");
    setContentView(R.layout.main);

    Button killButton = (Button) findViewById(R.id.killButton);
    killButton.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        Log.d(TAG, "finish()");
        finish();
      }
    });

    Button countButton = (Button) findViewById(R.id.countButton);
    countButton.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        Log.d(TAG, "counting");
        counter++;
        updateCounter();
      }
    });

    Button activityButton = (Button) findViewById(R.id.activityButton);
    activityButton.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        Log.d(TAG, "fire intent");
        Intent launchOtherScreen = new Intent(getApplicationContext(),
            Activity2.class);
        startActivity(launchOtherScreen);
      }
    });

  }   //onCreate()

  @Override
  protected void onStart() {
    super.onStart();
    Log.d(TAG, "onStart()");
  }

  @Override
  protected void onResume() {
    super.onResume();
    Log.d(TAG, "onResume()");
  }

  @Override
  protected void onPause() {
    super.onPause();
    Log.d(TAG, "onPause()");
  }

  @Override
  protected void onStop() {
    super.onStop();
    Log.d(TAG, "onStop()");
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    Log.d(TAG, "onDestroy()");
  }

  @Override
  protected void onRestart() {
    super.onRestart();
    Log.d(TAG, "onRestart()");
  }

  private void updateCounter() {
    TextView textView = (TextView) findViewById(R.id.counterValue);
    textView.setText("Actual counter: " + counter);
  }

}  //MyActivityLifecycle

Java Source Code List

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