2.13 Notification(通知)的使用

本文主要是介绍2.13 Notification(通知)的使用，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

一、布局文件

activity_main.xml 添加代码：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"><Button
       android:id="@+id/btn_show_normal"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="发送通知"/><Button
        android:id="@+id/btn_close_normal"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="关闭通知"android:layout_marginTop="50dp"/></RelativeLayout>

二、Java代码

1、新建一个Activity，命名为OtherActivity；

2、MianActivity添加如下代码：

package com.example.yuancan.test101902;import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;public class MainActivity extends AppCompatActivity implements View.OnClickListener {private Context mContext;private NotificationManager mNManager;private Notification notify1;Bitmap LargeBitmap = null;private static final  int NOTIFYLID_1 = 1;private Button btn_show_normal;private Button btn_close_normal;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mContext = MainActivity.this;LargeBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.avator_smaller);mNManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);bindView();}private void bindView() {btn_show_normal = (Button)findViewById(R.id.btn_show_normal);btn_close_normal = (Button)findViewById(R.id.btn_close_normal);btn_show_normal.setOnClickListener(this);btn_close_normal.setOnClickListener(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_show_normal://定义一个pendingIntent,点击Notification后启动一个ActivityIntent it = new Intent(mContext, OtherActivity.class);PendingIntent pit = PendingIntent.getActivity(mContext, 0, it, 0);//设置图片，通知标题，发送时间，提示方式等Notification.Builder mBuilder = new Notification.Builder(this);mBuilder.setContentTitle("您有一条新的通知").setContentText("请不要忘记打卡").setSubText("上下班请记得打卡").setTicker("收到信息").setWhen(System.currentTimeMillis()).setSmallIcon(R.mipmap.ic_launcher).setLargeIcon(LargeBitmap).setDefaults(Notification.DEFAULT_LIGHTS|Notification.DEFAULT_VIBRATE).setAutoCancel(true).setContentIntent(pit);notify1 = mBuilder.build();mNManager.notify(NOTIFYLID_1, notify1);break;case R.id.btn_close_normal:mNManager.cancel(NOTIFYLID_1);break;}}
}