通知栏实现

1、权限，因为要通过延期意图拨打电话，所以要配置一个可以打电话的权限

<uses-permission android:name="android.permission.CALL_PHONE"/>

2、代码示例

 1 package com.example.notifydemo;
 2
 3 import android.net.Uri;
 4 import android.os.Build;
 5 import android.os.Bundle;
 6 import android.annotation.SuppressLint;
 7 import android.annotation.TargetApi;
 8 import android.app.Activity;
 9 import android.app.Notification;
10 import android.app.Notification.Builder;
11 import android.app.NotificationManager;
12 import android.app.PendingIntent;
13 import android.content.Intent;
14 import android.graphics.BitmapFactory;
15 import android.view.Menu;
16 import android.view.View;
17
18
19 public class MainActivity extends Activity {
20
21     @Override
22     protected void onCreate(Bundle savedInstanceState) {
23         super.onCreate(savedInstanceState);
24         setContentView(R.layout.activity_main);
25     }
26
27
28     @SuppressLint("NewApi")
29     public void click(View view){
30         //get a NotificationManager obj
31         NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
32         //图标、标题、时间
33         Notification notification = new Notification(R.drawable.ic_launcher,"我是一个notification",System.currentTimeMillis());
34         notification.flags = Notification.FLAG_AUTO_CANCEL;//这个标志位的设置表示在点击后取消通知栏的该内容
35         /*****意图start*****/
36         Intent intent = new Intent();
37         intent.setAction(Intent.ACTION_CALL);
38         intent.setData(Uri.parse("tel:110"));
39         /*****意图end*****/
40         //第二个参数为请求码,第四个是附加参数
41         PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);//延期意图
42         notification.setLatestEventInfo(this, "我是标题", "我是文本", pendingIntent);//延期意图高版本可以为null,低版本的则不能够为null
43
44         //3.0之后才能够使用的代码---start
45         /*Notification.Builder builder = new Builder(this);
46         builder.setContentTitle("我是notification标题")
47         .setContentText("我是notification内容!")
48         .setSmallIcon(R.drawable.ic_launcher)
49         .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher));
50         Notification notification = builder.build();*/
51         //3.0之后才能够使用的代码---end
52
53         //第一个参数为id
54         nm.notify(0, notification);
55     }
56
57 }