Android Open Source - android-activity-state Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.example.activitystate;
//from  w  w w  .ja  va2  s  .c  om
import java.util.Timer;
import java.util.TimerTask;

import com.example.activitystate.R;

import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
  Timer   mTimer   = null;            //onClick????????????????
  Handler mHandler = new Handler();   //UI Thread??????post??????
  int m_count = 0;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.i("appstate", "main create");
    setContentView(R.layout.activity_main);
    // ????
    mTimer = new Timer(false);
    mTimer.schedule( new TimerTask(){
          @Override
          public void run() {
              // mHandler????????UI Thread??????????????
              mHandler.post( new Runnable() {
                  public void run() {
                    m_count++;
                    TextView textView = (TextView)findViewById(R.id.textView1);
                    textView.setText("count:" + m_count);
                  }
              });
          }
      }, 100, 1000);
  }

  @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;
  }
  
  public void buttonMethod(View button){
    Intent intent = new Intent(this, SubActivity.class);
    startActivity(intent);
  }
  
  public void buttonMethod2(View button){
    Toast.makeText(this, "test", Toast.LENGTH_SHORT).show();
  }

  public void buttonMethod3(View button){
    Intent intent = new Intent(this, ThirdActivity.class);
    startActivity(intent);
  }

  public void buttonMethod4(View button){
      // ?????????
      AlertDialog.Builder myBuilder = new AlertDialog.Builder(this);
      myBuilder.setTitle("My Alert Dialog");
      myBuilder.setMessage("Are you really sure?");
      // ??????
      MyListener listener = new MyListener(); // ?????
      myBuilder.setPositiveButton("Yes", listener); // ??????????
      myBuilder.setNeutralButton("Maybe", listener); // ?????????
      //myBuilder.setNegativeButton("No", listener); // ????????????
      myBuilder.setCancelable(true);
      myBuilder.setOnCancelListener(listener);
      // ????????????????
      AlertDialog myAlertDialog = myBuilder.create();
      myAlertDialog.show();
  }

  public void buttonMethod5(View button){
    Intent intent = new Intent();
    intent.setClassName("com.example.alpha", "com.example.alpha.MainActivity");
    startActivity(intent);
  }

  public void buttonMethod6(View button){
    finish();
  }

    // ???????????????????????????????
    public class MyListener implements DialogInterface.OnClickListener, DialogInterface.OnCancelListener{// android.content.DialogInterface.OnClickListener {
        /*
      @Override
        public void onClick(DialogInterface v, int i) {
          aTextView.setText(String.format("You selected %d", i));
        }
        */
      @Override
      public void onClick(DialogInterface dialog, int which) {
        TextView aTextView = (TextView)findViewById(R.id.textView2);
        // TODO Auto-generated method stub
          switch(which){
          case AlertDialog.BUTTON_POSITIVE:
              aTextView.setText("positive");
              break;
          case AlertDialog.BUTTON_NEUTRAL:
              aTextView.setText("neutral");
              break;
          case AlertDialog.BUTTON_NEGATIVE:
              aTextView.setText("negative");
              break;
        default:
              aTextView.setText(String.format("You selected %d", which));
          return;
          }
      }

      @Override
      public void onCancel(DialogInterface dialog) {
        TextView aTextView = (TextView)findViewById(R.id.textView2);
        aTextView.setText("Canceled");
      }
    }

  @Override
  protected void onDestroy() {
    Log.i("appstate", "main destroy");
    super.onDestroy();
  }

  @Override
  protected void onStart() {
    Log.i("appstate", "main start");
    super.onStart();
  }

  @Override
  protected void onRestart() {
    Log.i("appstate", "main restart");
    super.onRestart();
  }

  @Override
  protected void onResume() {
    Log.i("appstate", "main resume");
    super.onResume();
  }

  @Override
  protected void onPause() {
    Log.i("appstate", "main pause");
    super.onPause();
  }

  @Override
  protected void onStop() {
    Log.i("appstate", "main stop");
    super.onStop();
  }

}

Java Source Code List

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