[移动开发]Android 控件：Notification基本过程

1.通过getSystemService方法获取NotificationManager对象：manager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
2.使用NotificationCompat类中的Builder构造器来创建Notification对象：

 Notification notification = new NotificationCompat.Builder(this,"led").build();

渠道id需要 Notificationchannel来设置需判断Version是否＞8.0： if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
对Notification对象进行设置：

示例：

notification = new NotificationCompat.Builder(this,"led")
                .setContentTitle("闹钟")
                .setContentText("闹钟响了,是否关闭")
                .setSmallIcon(R.drawable.ic_baseline_access_alarm_24)
              	.setLargeIcon(BitmapFactory.decodeResource(getResources(),R.drawable.ceshi))
                .setColor(Color.parseColor("#00ff00"))
                .setContentIntent(pendingIntent)
                .setAutoCancel(true)
                .build();
                

3.添加意图Intent,PendingIntent来跳转通知

 Intent intent = new Intent(this,NotificationActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this,0,intent,0);       

4.点击后通知自动消失：.setAutoCancel(true)

效果展示