摘自:http://blog.csdn.net/cstarbl/article/details/7200757
通知栏Notification使用自定义视图方法,这里以显示进度条ProgressBar为例,具体效果不上图了,请参考在Android Market下载软件时通知栏的效果。
布局main.xml:
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- >
- <Button android:id="@+id/bt1"
- android:layout_height="wrap_content"
- android:layout_width="fill_parent"
- android:text="Notification测试"
- />
- <Button android:id="@+id/bt2"
- android:layout_height="wrap_content"
- android:layout_width="fill_parent"
- android:text="清除Notification"
- />
- </LinearLayout>
自定义通知栏的布局:notification.xml文件,一个TextView显示下载中,下面一根进度条显示当前进度
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout
- xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:orientation="vertical"
- >
- <TextView android:id="@+id/down_tv"
- android:layout_width="wrap_content"
- android:layout_height="fill_parent"
- android:textSize="20sp"
- android:textColor="#000000"
- android:text="下载中"
- />
- <ProgressBar android:id="@+id/pb"
- android:layout_width="260dip"
- android:layout_height="wrap_content"
- style="?android:attr/progressBarStyleHorizontal"
- android:layout_gravity="center_vertical"/>
- </LinearLayout>
程序代码:
- package com.pocketdigi.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.os.Handler;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.RemoteViews;
- public class main extends Activity {
- /** Called when the activity is first created. */
- int notification_id=19172439;
- NotificationManager nm;
- Handler handler=new Handler();
- Notification notification;
- int count=0;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- Button bt1=(Button)findViewById(R.id.bt1);
- bt1.setOnClickListener(bt1lis);
- Button bt2=(Button)findViewById(R.id.bt2);
- bt2.setOnClickListener(bt2lis);
- //建立notification,前面有学习过,不解释了,不懂看搜索以前的文章
- nm=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
- notification=new Notification(R.drawable.home,"图标边的文字",System.currentTimeMillis());
- notification.contentView = new RemoteViews(getPackageName(),R.layout.notification);
- //使用notification.xml文件作VIEW
- notification.contentView.setProgressBar(R.id.pb, 100,0, false);
- //设置进度条,最大值 为100,当前值为0,最后一个参数为true时显示条纹
- //(就是在Android Market下载软件,点击下载但还没获取到目标大小时的状态)
- Intent notificationIntent = new Intent(this,main.class);
- PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);
- notification.contentIntent = contentIntent;
- }
- OnClickListener bt1lis=new OnClickListener(){
- @Override
- public void onClick(View v) {
- // TODO Auto-generated method stub
- showNotification();//显示notification
- handler.post(run);
- }
- };
- Runnable run=new Runnable(){
- @Override
- public void run() {
- // TODO Auto-generated method stub
- count++;
- notification.contentView.setProgressBar(R.id.pb, 100,count, false);
- //设置当前值为count
- showNotification();//这里是更新notification,就是更新进度条
- if(count<100) handler.postDelayed(run, 200);
- //200毫秒count加1
- }
- };
- OnClickListener bt2lis=new OnClickListener(){
- @Override
- public void onClick(View v) {
- nm.cancel(notification_id);
- //清除notification
- }
- };
- public void showNotification(){
- nm.notify(notification_id, notification);
- }
- }
效果图: