//1.创建RemoteViews实例
        RemoteViews mRemoteViews=new RemoteViews("com.example.remoteviewdemo", R.layout.remoteview_layout);

        //2.构建一个打开Activity的PendingIntent
        Intent intent=new Intent(MainActivity.this,MainActivity.class);
        PendingIntent mPendingIntent=PendingIntent.getActivity(MainActivity.this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

        //3.创建一个Notification
        mNotification = new Notification.Builder(this)
        .setSmallIcon(R.drawable.ic_launcher)
        .setContentIntent(mPendingIntent)
        .setContent(mRemoteViews)
        .build();

        //4.获取NotificationManager
        manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        Button button1 = (Button) findViewById(R.id.button1);
        button1.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                //弹出通知
                manager.notify(1, mNotification);
            }
        });