Notification的使用

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;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt = (Button) findViewById(R.id.first_bt);
bt.setOnClickListener(new OnClickListener() {

@Override
public 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());

}
});
}

@Override
public 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 {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
getMenuInflater().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：