Notification通知栏

通知栏可以设置很多样式，根据不同的需求可以设置不同的通知栏：

1 最普通的一种通知栏：

private void initNotification() {Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse("htt://www.baidu.com"));PendingIntent pendingIntent = PendingIntent.getActivity(this,REQ_NO , intent, 0);Notification.Builder builder= new Notification.Builder(MainActivity.this);builder.setSmallIcon(R.drawable.ic_launcher);builder.setContentIntent(pendingIntent);builder.setAutoCancel(true);builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher));builder.setContentTitle("这是标题");builder.setContentText("这是内容");builder.setSubText("这是内容下面的文字");NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);Notification notification = builder.build();notificationManager.notify(NOTIFICATION_ID_NUM1,notification);}

2.设置一个折叠式的通知栏：

private void initNotification2() {Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse("htt://www.sina.com"));PendingIntent pendingIntent = PendingIntent.getActivity(this,REQ_NO , intent, 0);Notification.Builder builder= new Notification.Builder(MainActivity.this);builder.setSmallIcon(R.drawable.ic_launcher);builder.setContentIntent(pendingIntent);builder.setAutoCancel(true);builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher));NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);Notification notification = builder.build();              <strong>  notification.contentView =remoteViews;notification.bigContentView = extendViews;</strong>notificationManager.notify(NOTIFICATION_ID_NUM2,notification);}

两种布局：可以自定义

remoteViews = new RemoteViews(getPackageName(),R.layout.notification);remoteViews.setTextViewText(R.id.tv_no, "我是内容");extendViews = new RemoteViews(getPackageName(),R.layout.extendview);extendViews.setTextViewText(R.id.tv_no, "我是内容");

3设置悬挂式的通知栏；

private void initNotification3() {Intent intent = new Intent();intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setClass(this, MainActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this,REQ_NO , intent, PendingIntent.FLAG_CANCEL_CURRENT);Notification.Builder builder= new Notification.Builder(MainActivity.this);builder.setSmallIcon(R.drawable.ic_launcher);builder.setPriority(Notification.PRIORITY_DEFAULT);builder.setCategory(Notification.CATEGORY_MESSAGE);builder.setContentTitle("这是标题");builder.setContentText("这是内容");          <strong>      builder.setFullScreenIntent(pendingIntent, true);</strong>NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);Notification notification = builder.build();notificationManager.notify(NOTIFICATION_ID_NUM3,notification);}

4通知栏分等级：

     * Notification.VISIBILITY_PUBLIC：没有锁屏的时候会显示
     * Notification.VISIBILITY_PRIVATE：任何情况都会显示

     * Notification.VISIBILITY_SECRET：在pin password 安全锁和没有锁屏的情况才会显示。

private void initNotification4() {Intent intent = new Intent();intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setClass(this, MainActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this,REQ_NO , intent, PendingIntent.FLAG_CANCEL_CURRENT);Notification.Builder builder= new Notification.Builder(MainActivity.this);<strong>builder.setVisibility(Notification.VISIBILITY_SECRET);</strong>builder.setSmallIcon(R.drawable.ic_launcher);builder.setPriority(Notification.PRIORITY_DEFAULT);builder.setCategory(Notification.CATEGORY_MESSAGE);builder.setContentTitle("这是标题");builder.setContentText("这是内容");builder.setFullScreenIntent(pendingIntent, true);NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);Notification notification = builder.build();notificationManager.notify(NOTIFICATION_ID_NUM3,notification);}