Android项目仿UC浏览器和360手机卫士消息常驻栏（通知栏）

package com.example.textwsjdemo;  import android.app.Activity; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.view.KeyEvent; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.RemoteViews; import android.widget.Toast;  public class MainActivity extends Activity {   private Button bt_hehe;  private NotificationManager notificationManager;  private Notification notification;  private int icon;  private CharSequence tickerText;  private long when;  RemoteViews contentView;  private Intent intent;  private PendingIntent pendingIntent;  private int notification_id = 0;  private MyBroadCast receiver;  private static String ACTION = "a";   @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   receiver = new MyBroadCast();   IntentFilter filter = new IntentFilter();   filter.addAction("a");   filter.addAction("b");   filter.addAction("c");   filter.addAction("d");   registerReceiver(receiver, filter);    initView();   initData();   }   private void initData() {   icon = R.drawable.ic_launcher; // 通知图标   tickerText = "Hello"; // 状态栏显示的通知文本提示   when = System.currentTimeMillis(); // 通知产生的时间，会在通知信息里显示  }   private void initView() {   bt_hehe = (Button) findViewById(R.id.bt_hehe);   bt_hehe.setOnClickListener(new OnClickListener() {     @Override    public void onClick(View v) {     // TODO Auto-generated method stub     // 启动提示栏     createNotification();    }   });  }   private void createNotification() {   notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);   notification = new Notification();   notification.icon = icon;   notification.tickerText = tickerText;   notification.when = when;    /***    * 在这里我们用自定的view来显示Notification    */   contentView = new RemoteViews(getPackageName(),     R.layout.notification_item);   contentView.setTextViewText(R.id.text11, "小说");   contentView.setTextViewText(R.id.text22, "视频");   contentView.setTextViewText(R.id.text33, "新闻");   contentView.setTextViewText(R.id.text44, "扯淡");   // contentView.setTextViewText(R.id.notificationPercent, "0%");   // contentView.setProgressBar(R.id.notificationProgress, 100, 0, false);   // //进度条   // contentView.setImageViewResource(R.id.image,R.drawable.more_advice);   // //加载图片   // contentView.setImageViewResource(R.id.image,R.drawable.more_attention);   // contentView.setImageViewResource(R.id.image,R.drawable.more_evaluate);   // contentView.setImageViewResource(R.id.image,R.drawable.more_about);   // contentView.setTextViewText(R.id.text,"Hello,this message is in a custom expanded view");   // //文本       notification.flags = Notification.FLAG_ONGOING_EVENT; // 设置常驻，不能滑动取消   //默认跳转的主界面   intent = new Intent(this, MainActivity.class);   intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);   pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);      //自定义跳转   contentView.setOnClickPendingIntent(R.id.ll_11, PendingIntent.getBroadcast(MainActivity.this, 11, new Intent().setAction("a"), PendingIntent.FLAG_UPDATE_CURRENT));   contentView.setOnClickPendingIntent(R.id.ll_22, PendingIntent.getBroadcast(MainActivity.this, 11, new Intent().setAction("b"), PendingIntent.FLAG_UPDATE_CURRENT));   contentView.setOnClickPendingIntent(R.id.ll_33, PendingIntent.getBroadcast(MainActivity.this, 11, new Intent().setAction("c"), PendingIntent.FLAG_UPDATE_CURRENT));   contentView.setOnClickPendingIntent(R.id.ll_44, PendingIntent.getBroadcast(MainActivity.this, 11, new Intent().setAction("d"), PendingIntent.FLAG_UPDATE_CURRENT));   notification.contentView = contentView;   notification.contentIntent = pendingIntent;   notificationManager.notify(notification_id, notification);  }   // 取消通知  private void cancelNotification() {   notificationManager.cancelAll();  }   @Override  protected void onDestroy() {   cancelNotification();   unregisterReceiver(receiver);   }   @Override  public boolean onKeyDown(int keyCode, KeyEvent event) {   if ((keyCode == KeyEvent.KEYCODE_BACK)) {    System.out.println("按下了back键 onKeyDown()");    cancelNotification();   }   return super.onKeyDown(keyCode, event);  }    class MyBroadCast extends BroadcastReceiver {    @Override   public void onReceive(Context context, Intent intent) {    if(intent.getAction().equals("a")){     Toast.makeText(MainActivity.this, "11111111111111",       Toast.LENGTH_LONG).show();     startActivity(new Intent(MainActivity.this, ActivityText1.class));    }    if(intent.getAction().equals("b")){     Toast.makeText(MainActivity.this, "222222222222222",       Toast.LENGTH_LONG).show();     startActivity(new Intent(MainActivity.this, ActivityText2.class));    }    if(intent.getAction().equals("c")){     Toast.makeText(MainActivity.this, "333333333333",       Toast.LENGTH_LONG).show();     startActivity(new Intent(MainActivity.this, ActivityText3.class));    }    if(intent.getAction().equals("d")){     Toast.makeText(MainActivity.this, "4444444444444",       Toast.LENGTH_LONG).show();     startActivity(new Intent(MainActivity.this, ActivityText4.class));    }       }   }  } 

/* * 添加声音 * notification.defaults |=Notification.DEFAULT_SOUND; * 或者使用以下几种方式 * notification.sound = Uri.parse("file:///sdcard/notification/ringer.mp3"); * notification.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6"); * 如果想要让声音持续重复直到用户对通知做出反应，则可以在notification的flags字段增加"FLAG_INSISTENT" * 如果notification的defaults字段包括了"DEFAULT_SOUND"属性，则这个属性将覆盖sound字段中定义的声音 */ /* * 添加振动 * notification.defaults |= Notification.DEFAULT_VIBRATE; * 或者可以定义自己的振动模式： * long[] vibrate = {0,100,200,300}; //0毫秒后开始振动，振动100毫秒后停止，再过200毫秒后再次振动300毫秒 * notification.vibrate = vibrate; * long数组可以定义成想要的任何长度 * 如果notification的defaults字段包括了"DEFAULT_VIBRATE",则这个属性将覆盖vibrate字段中定义的振动 */ /* * 添加LED灯提醒 * notification.defaults |= Notification.DEFAULT_LIGHTS; * 或者可以自己的LED提醒模式: * notification.ledARGB = 0xff00ff00; * notification.ledOnMS = 300; //亮的时间 * notification.ledOffMS = 1000; //灭的时间 * notification.flags |= Notification.FLAG_SHOW_LIGHTS; */ /* * 更多的特征属性 * notification.flags |= FLAG_AUTO_CANCEL; //在通知栏上点击此通知后自动清除此通知 * notification.flags |= FLAG_INSISTENT; //重复发出声音，直到用户响应此通知 * notification.flags |= FLAG_ONGOING_EVENT; //将此通知放到通知栏的"Ongoing"即"正在运行"组中 * notification.flags |= FLAG_NO_CLEAR; //表明在点击了通知栏中的"清除通知"后，此通知不清除， * //经常与FLAG_ONGOING_EVENT一起使用 * notification.number = 1; //number字段表示此通知代表的当前事件数量，它将覆盖在状态栏图标的顶部 * //如果要使用此字段，必须从1开始 * notification.iconLevel = ; //