Android应用开发笔记 - 项目代码3

 

1.3 App类控件

    MainActivity.java

package com.example.apppalettesdemo;import android.os.Bundle;import android.app.Activity;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.ProgressDialog;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.content.Intent;import android.view.Menu;import android.view.MenuItem;import android.widget.Toast;public class MainActivity extends Activity implements OnClickListener {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.my_options_menu, menu);        return true;    }       @Overridepublic boolean onOptionsItemSelected(MenuItem item) {// TODO Auto-generated method stub   Boolean flag = false;   switch (item.getItemId()) {case R.id.AlertDialog01:Builder dialog = new AlertDialog.Builder(MainActivity.this);dialog.setTitle("Hint");dialog.setMessage("This is Message!");dialog.setPositiveButton("Ok", this);dialog.show();flag = true;break;case R.id.notificationManager01:NotificationManager notiManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);Notification notiInst = new Notification(R.drawable.ic_launcher, "This is notify 2012-09-12", System.currentTimeMillis());PendingIntent pendIntent = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);notiInst.setLatestEventInfo(this, "Notify", "Notify 01", pendIntent);notiManager.notify(0, notiInst);flag = true;break;case R.id.progressDialog01:ProgressDialog progrDialog = new ProgressDialog(this);progrDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);progrDialog.setMessage("Loading Information...");progrDialog.show();flag = true;break;default:break;}return flag;}      // DialogInterface   @Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(this, "You just press 'AlertDialog' button!", Toast.LENGTH_SHORT).show();}   }

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