Notification的使用

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1、布局文件

activity_main.xml

<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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.notice.MainActivity" >    <Button        android:id="@+id/first_bt"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="发送消息" /></RelativeLayout>

second.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView        android:id="@+id/second_tv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="你是个大傻瓜" /></LinearLayout>

2、java代码

MainActivity.java

package com.example.notice;import android.app.Activity;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Intent;import android.os.Bundle;import android.support.v4.app.NotificationCompat;import android.support.v4.app.NotificationCompat.Builder;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;/** *  * @author Lenovo 1、一个按钮通知 2、点击通知，显示下一个界面 */public class MainActivity extends Activity {private Button bt;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);bt = (Button) findViewById(R.id.first_bt);bt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// 1、发送一条通知NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);// 设置跳转Intent intent = new Intent(MainActivity.this, Second.class);// 清除顶置东西，判断进程是否就绪intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK);// 设置intent等外部条件完成后出发PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);// 1）通知来的时候，状态栏滚动，NotificationCompat.Builder ncb = new Builder(MainActivity.this);ncb.setTicker("你有一条新的消息");// 一定时间状态栏时自动取消信息ncb.setAutoCancel(true);ncb.setContentIntent(pendingIntent);// 2）设置下拉内容// 图标ncb.setSmallIcon(R.drawable.ic_launcher);// 标题ncb.setContentTitle("qq");// 内容ncb.setContentText("打开有惊喜");// 2、启动通知nm.notify(1, ncb.build());}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}}

Second.java

package com.example.notice;import android.app.Activity;import android.os.Bundle;import android.view.Menu;public class Second extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.second);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// TODO Auto-generated method stubgetMenuInflater().inflate(R.menu.second, menu);return true;}}

配置文件AndroidManifest.xml添加activity说明

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.notice"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.notice.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name="com.example.notice.Second"></activity>    </application></manifest>

效果图：

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