Notification通知启动三大组件

一、创建一个普通Notification

1. 创建通知构造者

NotificationCompat.Builder builder=new NotificationCompat.Builder(MainActivity.this);

2. 设置通知的图标、标题和内容文本

builder.setSmallIcon(R.mipmap.ic_laucher)
.setContentTitle("亲，福利到啦！")
.setContentText("点击访问购物页面");

3. 设置表示通知访问的目标组件的意图

Intent intent=new Intent(MainActivity.this,SecondActivity.class);

4. 创建启动Activity的PendingIntent

PendingIntent pi=PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT);

5. 设置通知的意图

builder.setContentIntent(pi);

6. 创建通知管理器

NotificationManager manager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);

7. 创建Notifiaction实例

Notification notification=builder.build();

8. 设置通知的标志，点击通知后，通知自动清除

notification.flags=Notification.FLAG_AUTO_CANCEL;

9. 发送通知

manager.notify(99,builder.build());

二、用通知Notification开启Activity

NotificationCompat.Builder builder=new NotificationCompat.Builder(this);
builder.setContentTitle("亲，购物啦")
                 .setSmallIcon(R.mipmap.ic_launcher)
                 .setContentText("点击我进入购物界面");
Intent intent=new Intent(MainActivity.this,BuyActivity.class);
PendingIntent pendingIntent=PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent); 
//创建通知对象
Notification notification=builder.build();
notification.flags=Notification.FLAG_AUTO_CANCEL;
//获取系统服务，创建通知管理器
 NotificationManager manager= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(99,notification);

三、用Notification发送广播

NotificationCompat.Builder builder=new NotificationCompat.Builder(this);
builder.setContentTitle("发送服务")
.setSmallIcon(R.mipmap.ic_launcher)
.setContentText("点击我发送服务");
Intent intent=new Intent(MainActivity.this,MyService.class);
PendingIntent pendingIntent=PendingIntent.getService(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);
//创建通知对象
Notification notification=builder.build();
notification.flags=Notification.FLAG_AUTO_CANCEL;
//获取系统服务，创建通知管理器
NotificationManager manager= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        manager.notify(90,notification);