Android Notifications

    一条通知消息是显示于你用于正常UI之外的地方。你可以通过点击它来查看通知详情。另外，NotificationCompat.Builder是用于低版本构建的方式，Android 3.0以上使用Notification.Builder来构建。通知显示有两种视图样式，1种是普通视图，1种是大视图（Android4.1以上才行）。

NotificationManager manager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);

Notification.Builder builder = new Notification.Builder(this);

builder.setTicker("");

builder.setSmallIcon(R.drawable.xxx);

builder.setContentTitle("");

builder.setContentText("");

Intent intent = new Intent(Activity.this, Activity.class);

PendingIntent pendingIntent = PendingIntent.getActivity(Activity.this, 1, intent, PendingIntent.FLAG_ONE_SHOT);

builder.setContentIntent(pendingIntent);

manager.notify(id, builder.build());

如果需要添加进度条需要进行如下操作：

new Thread(new Runnable{

    builder.setProgress(max,  cur, fasle);

    manager.notify(id, builder.build());

}).start();

builder.setProgress(0, 0, false);//取消进度条

manager.notify(id, builder.build());

自定义通知：

Notification.Builder builder = new Notification.Builder(Activity.this);

RemoteViews remoteViews= new RemoteViews(getPackageName(), R.layout.xxx);

builder.setTicker("");

builder.setContentTitle("");

builder.setContentText("");

builder.setSmallIcon(R.drawable.xxx);

remoteViews.setTextViewText(R.id.xxx, "");

remoteViews.setImageViewResource(R.id.xxx, R,drawable.xxx);

Intent intent = new Intent(Activity.this, Activity.class);

PendingIntent pendingIntent = PendingIntent.getActivity(Activity.this, 1, intent, PendingIntent.FLAG_ONE_SHOT);

builder.setContentIntent(pendingIntent);

builder.setContent(remoteViews);

manager.notify(id, builder.build());