通知栏Notification自定义视图方法（显示进度条）

转自：http://www.devdiv.com/Android-%E9%80%9A%E7%9F%A5%E6%A0%8FNotification%E4%BD%BF%E7%94%A8%E8%87%AA%E5%AE%9A%E4%B9%89%E8%A7%86%E5%9B%BE%E6%96%B9%E6%B3%95%EF%BC%88%E6%98%BE%E7%A4%BA%E4%B8%80%E4%B8%AA%E8%BF%9B%E5%BA%A6%E6%9D%A1ProgressBar%EF%BC%89-thread-46580-1-1.html

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：