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: