Android通知Notification

点击 发送通知 按钮，则发送通知到设备的通知栏。点击 清除通知 则清除通知栏上的消息通知。

package com.example.notification;import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Intent;import android.os.Bundle;import android.support.v4.app.NotificationCompat;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.RemoteViews;public class MainActivity extends Activity {private int NOTIFICATION_ID = 100;private int requestCode = 0000;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button send = (Button) findViewById(R.id.button1);send.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {sendmessge();}});Button cleanr = (Button) findViewById(R.id.button2);cleanr.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {cleanr();}});}public void sendmessge() {NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);NotificationCompat.Builder mbuilder = new NotificationCompat.Builder(this);mbuilder.setSmallIcon(R.drawable.ic_launcher);// mbuilder.setContentTitle("你有新消息了");// mbuilder.setContentText("成都爆炸事件据官方消息调查通知");Notification notifocation = mbuilder.build();// 当用户下来通知栏时候看到的就是RemoteViews中自定义的Notification布局RemoteViews rv = new RemoteViews(this.getPackageName(), R.layout.notification);rv.setImageViewResource(R.id.imageview, R.drawable.ic_launcher);rv.setTextViewText(R.id.textview1, "腾讯消息讯。。");rv.setTextViewText(R.id.textview2, "成都爆炸音又来新消息了");notifocation.contentView = rv;// 缺省设置为当发送通知到通知栏时候：提示声音 + 手机震动notifocation.defaults = Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE;// 通知的时间notifocation.when = System.currentTimeMillis();// 需要注意的是，作为选项，此处可以设置MainActivity的启动模式为singleTop，避免重复新建onCreate()。Intent intent = new Intent(this, MainActivity.class);// 当用户点击通知栏的Notification时候，切换回MainActivity。PendingIntent pi = PendingIntent.getActivity(this, requestCode, intent, PendingIntent.FLAG_UPDATE_CURRENT);notifocation.contentIntent = pi;// 发送到手机的通知栏notificationManager.notify(NOTIFICATION_ID, notifocation);}public void cleanr() {NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);notificationManager.cancel(NOTIFICATION_ID);}}

需要的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.notification.MainActivity" >    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="23dp"        android:layout_marginTop="34dp"        android:text="发送通知" />    <Button        android:id="@+id/button2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignRight="@+id/button1"        android:layout_below="@+id/button1"        android:layout_marginTop="83dp"        android:text="清除消息" /></RelativeLayout>

还有一个布局

<?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" >       <ImageView     android:id="@+id/imageview"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    /><TextView     android:id="@+id/textview1"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    /><TextView     android:id="@+id/textview2"    android:layout_width="wrap_content"    android:layout_height="wrap_content"/> </LinearLayout>

我的第二个布局写的不是很好。信息显示不全。自己可以拿来更改一下你的布局  用相对布局方便一点儿。线性布局显示不全信息。暂时还没有修改