android的几种“通知”方式简单实现(Notification&NotificationManager)

  关于通知Notification相信大家都不陌生了,平时上QQ的时候有消息来了或者有收到了短信,手机顶部就会显示有新消息什么的,就类似这种。今天就稍微记录下几种Notification的用法。3.0以前的通知和3.0以后的通知是有些区别的。话不多说,直接上代码。

  1、新建一个android项目

    我新建项目的 minSdkVersion="11",targetSdkVersion="19"。也就是支持最低版本的3.0的。

  2、习惯性地打开项目清单文件AndroidManifest.xml,添加一个权限:<uses-permission android:name="android.permission.VIBRATE"/> 不添加不行的。

  3、在布局activity_main.xml中添加几个按钮,样子就大概这样,垂直排版的LinearLayout

具体代码

<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context=".MainActivity" >

       <Button 
           android:id="@+id/btn_01"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="3.0以前版本的notification,用新的吧"
           android:onClick="click"
           />

       <Button 
           android:id="@+id/btn_02"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="大视图文本通知"
           android:onClick="click"
           />
       
       <Button 
           android:id="@+id/btn_03"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="大视图图片通知"
           android:onClick="click"
           />
       
       <Button 
           android:id="@+id/btn_04"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="进度条通知"
           android:onClick="click"
           />
       
</LinearLayout>
View Code

 

   4、MainActivity中的代码:

  1 package com.xin.day_12_notificationdemo1;
  2 
  3 import java.util.Timer;
  4 import java.util.TimerTask;
  5 
  6 import android.app.Activity;
  7 import android.app.Notification;
  8 import android.app.NotificationManager;
  9 import android.app.PendingIntent;
 10 import android.content.Intent;
 11 import android.graphics.BitmapFactory;
 12 import android.os.Bundle;
 13 import android.support.v4.app.NotificationCompat;
 14 import android.support.v4.app.NotificationCompat.BigPictureStyle;
 15 import android.support.v4.app.NotificationCompat.BigTextStyle;
 16 import android.support.v4.app.NotificationCompat.Builder;
 17 import android.util.Log;
 18 import android.view.View;
 19 
 20 public class MainActivity extends Activity {
 21 
 22     //通知的唯一标识,在一个应用程序中不同的通知要区别开来
 23     private static final int NO1 = 0x1001;
 24     private static final int NO2 = 0x1002;
 25     private static final int NO3 = 0x1003;
 26     private static final int NO4 = 0x1004;
 27     //进度条要用
 28     private int progress = 1;
 29 
 30     @Override
 31     protected void onCreate(Bundle savedInstanceState) {
 32         super.onCreate(savedInstanceState);
 33         setContentView(R.layout.activity_main);
 34     }
 35 
 36     //click方法,和xml文件中的各个按钮的onClick属性的值要一致
 37     public void click(View view) {
 38         //创建NotificationManager
 39         final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
 40         //用switch语句控制四个控件
 41         switch (view.getId()) {
 42         case R.id.btn_01: {
 43             Notification notification = new Notification();
 44             notification.icon = R.drawable.ic_launcher;
 45             notification.tickerText = "有消息了。。。";
 46             Intent intent = new Intent(this, MainActivity.class);
 47             PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
 48                     intent, PendingIntent.FLAG_UPDATE_CURRENT);
 49             notification.setLatestEventInfo(this, "3.0以前的通知", "试试而已", pendingIntent);
 50             notification.when = System.currentTimeMillis();
 51             notification.defaults = Notification.DEFAULT_ALL;
 52             notification.flags = Notification.FLAG_AUTO_CANCEL;
 53             notification.number = 1;
 54             notification.vibrate = new long[]{0, 4000};
 55             manager.notify(NO1, notification);
 56         }
 57         break;
 58         case R.id.btn_02:{
 59             //大视图文本通知
 60             //创建消息构造器,在扩展包
 61             NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
 62             //设置当有消息是的提示,图标和提示文字
 63             builder.setSmallIcon(R.drawable.ic_launcher).setTicker("有新消息了");
 64             //需要样式
 65             BigTextStyle style = new BigTextStyle();
 66             style.setBigContentTitle("上课通知");//通知的标题
 67             style.bigText("今天下午要在综B303上jsp");//通知的文本内容
 68             //大视图文本具体内容
 69             style.setSummaryText("这是正常的课程安排,请各位同学按时上课");
 70             builder.setStyle(style);
 71             //显示消息到达的时间,这里设置当前时间
 72             builder.setWhen(System.currentTimeMillis());
 73             //获取一个通知对象
 74             Notification notification = builder.build();
 75             notification.flags = Notification.FLAG_AUTO_CANCEL;
 76             //发送(显示)通知
 77             //notify()第一个参数id An identifier for this notification unique within your application
 78             //get?意思说,这个通知在你的应用程序中唯一的标识符
 79             manager.notify(NO2, notification);
 80         }
 81         break;
 82         
 83         case R.id.btn_03:{
 84             //大视图图片通知
 85             NotificationCompat.Builder builderPic = new Builder(this);
 86             builderPic.setSmallIcon(R.drawable.ic_launcher).setTicker("新浪体育提醒");
 87             //进行设置
 88             BigPictureStyle pictureStyle = new BigPictureStyle();
 89             pictureStyle.setBigContentTitle("新浪体育 快船VS骑士 ");
 90             pictureStyle.bigPicture(BitmapFactory.decodeResource(getResources(), R.drawable.ic_game));
 91             pictureStyle.setSummaryText(" 快船VS骑士 天王山之战!!!");//不要在意文字
 92             //设置样式
 93             builderPic.setStyle(pictureStyle);
 94             //设置显示的时间
 95             builderPic.setWhen(System.currentTimeMillis());
 96             Notification notification = pictureStyle.build();
 97             notification.flags = Notification.FLAG_AUTO_CANCEL;
 98             //
 99             manager.notify(NO3, notification);
100         }
101         break;
102         
103         case R.id.btn_04:{
104             //进度条通知
105             final NotificationCompat.Builder builderProgress = new NotificationCompat.Builder(this);
106             builderProgress.setSmallIcon(R.drawable.ic_launcher).setTicker("进度条通知");
107             builderProgress.setProgress(100, progress, false);
108             final Notification notification = builderProgress.build();
109             //发送一个通知
110             manager.notify(NO4, notification);
111             //创建一个计时器
112             Timer timer = new Timer();
113             timer.schedule(new TimerTask(){
114 
115                 @Override
116                 public void run() {
117                     Log.i("progress",progress+"");
118                     while(progress <= 100){
119                         progress ++;
120                         try {
121                             Thread.sleep(300);
122                         } catch (InterruptedException e) {
123                             // TODO Auto-generated catch block
124                             e.printStackTrace();
125                         }
126                         //更新进度条
127                         builderProgress.setProgress(100, progress, false);
128                         //再次通知
129                         manager.notify(NO4, builderProgress.build());
130                     }
131                     //计时器退出
132                     this.cancel();
133                     //进度条退出
134                     manager.cancel(NO4);
135                     return;//结束方法
136                 }
137                 
138             }, 0);
139         }
140         break;
141         
142         default:
143             break;
144         }
145     }
146 
147 }
View Code

   5、运行:我的虚拟机版本是4.0的,按住通知左(右)滑动就可以让通知小时了。效果如下:

原文地址:https://www.cnblogs.com/xinge1993/p/4891376.html