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好的，我环顾了这个网站和其他网站，我看到了与我想要的类似的东西，但这不是我想要的......让我解释一下我正在学习使用具有媒体播放器的 eclipse 构建一个 android 应用程序链接到我正在运行的直播服务器，到目前为止，应用程序运行良好，但顶部没有图标，通知区域是，当我在播放音乐的同时去另一个应用程序（游戏）播放时它最小化了应用程序..这很好但是当我重新打开应用程序时它不会停止媒体播放器事实上如果我播放播放器我将有 2 个播放器运行我将不得不使用任务管理器强制停止它,,我知道这可以做到，因为我的手机上有带有图标的应用程序，当我搜索这个网站时，它会做我想做的事 http://www.youtube.com/watch?v=e74z0_Z5QWI&feature=relmfu显示的代码如下

import android.app.Activity;

public class StatusBar extends Activity implements OnclickListener{

NotificationManager nm;


@Override
Protected void onCreate(bundle savedInstance){
//TODO Auto-generated method Stub
    super.oncreate(savedInstaceState);
    setContentView(R.layout.statusbar);
    Button stat = (Button)findViewById(R.id.bStatusBar);
    stat.setOnClickListener(this);
    nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    }
public void onClick(View v){
//TODO Auto-generated method Stub
    Intent intent = new Intent(this, StatusBar.class);
    PendingIntent pi = PendingIntent.getActivity(this, 0, intent, 0);

}

我已将此代码添加到我的 MainActivity.java 但它向我吐出几个错误，我试图使用 quickfix 修复这是我目前在 MainActivity.java 文件中的脚本

package com.myapp.mytapp;


import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.SeekBar;


public class MainActivity extends Activity implements OnClickListener, OnTouchListener, OnCompletionListener, OnBufferingUpdateListener{
    private Button btn_play,
    btn_pause,
    btn_stop;
private SeekBar seekBar;
private MediaPlayer mediaPlayer;
private int lengthOfAudio;
private final String URL = "http://link to url:8002";
private final Handler handler = new Handler();
private final Runnable r = new Runnable() { 
@Override
public void run() {
updateSeekProgress();                   
}
};

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}

private void init() {
btn_play = (Button)findViewById(R.id.btn_play);
btn_play.setOnClickListener(this);
btn_pause = (Button)findViewById(R.id.btn_pause);
btn_pause.setOnClickListener(this);
btn_pause.setEnabled(true);
btn_stop = (Button)findViewById(R.id.btn_stop);
btn_stop.setOnClickListener(this);
btn_stop.setEnabled(true);

seekBar = (SeekBar)findViewById(R.id.seekBar);
seekBar.setOnTouchListener(this);

mediaPlayer = new MediaPlayer();
mediaPlayer.setOnBufferingUpdateListener(this);
mediaPlayer.setOnCompletionListener(this);

}

@Override
public void onBufferingUpdate(MediaPlayer mediaPlayer, int percent) {
seekBar.setSecondaryProgress(percent);
}

@Override
public void onCompletion(MediaPlayer mp) {
btn_play.setEnabled(true);
btn_pause.setEnabled(false);
btn_stop.setEnabled(false);
}

@Override
public boolean onTouch(View v, MotionEvent event) {
if (mediaPlayer.isPlaying()) {
SeekBar tmpSeekBar = (SeekBar)v;
mediaPlayer.seekTo((lengthOfAudio / 100) * tmpSeekBar.getProgress() );
}
return false;
}

@Override
public void onClick(View view) {

try {
mediaPlayer.setDataSource(URL);
mediaPlayer.prepare();
lengthOfAudio = mediaPlayer.getDuration();
} catch (Exception e) {
//Log.e("Error", e.getMessage());
}

switch (view.getId()) {
case R.id.btn_play:
playAudio();
break;
case R.id.btn_pause:
pauseAudio();
break;
case R.id.btn_stop:
stopAudio();
break;
default:
break;
}

updateSeekProgress();
}

private void updateSeekProgress() {
if (mediaPlayer.isPlaying()) {
seekBar.setProgress((int)(((float)mediaPlayer.getCurrentPosition() / lengthOfAudio) * 100));
handler.postDelayed(r, 1000);
}
}

private void stopAudio() {
mediaPlayer.stop();
btn_play.setEnabled(true);
btn_pause.setEnabled(true);
btn_stop.setEnabled(true);
seekBar.setProgress(0);
}

private void pauseAudio() {
mediaPlayer.pause();
btn_play.setEnabled(true);
btn_pause.setEnabled(true);
}

private void playAudio() {
mediaPlayer.start();
btn_play.setEnabled(true);
btn_pause.setEnabled(true);
btn_stop.setEnabled(true);
}

public void homepage (View view) {
    goToUrl ( "http://myhomepage.com/");
}

private void goToUrl (String url) {
    Uri uriUrl = Uri.parse(url);
    Intent launchBrowser = new Intent(Intent.ACTION_VIEW, uriUrl);
    startActivity(launchBrowser);
}

}

这是我的 activity_main.xml 文件中的内容

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/black"
    android:icon="@drawable/ic_launcher"
    android:orientation="vertical" 
    startForeground()>

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/logo" />

        <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >


        <TableRow
            android:id="@+id/tableRow1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >
                   <Button
            android:id="@+id/homepage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:autoLink="web"
            android:clickable="true"
            android:cursorVisible="true"
            android:linksClickable="true"
            android:onClick="homepage"
            android:text="Home Page" />



        </TableRow>
    </LinearLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:gravity="center_horizontal"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/btn_play"
            android:layout_width="90dp"
            android:layout_height="wrap_content"
            android:background="@drawable/play"
            android:clickable="true"
            android:cursorVisible="true"
            android:src="@drawable/play" >
        </Button>

        <Button
            android:id="@+id/btn_pause"
            android:layout_width="90dp"
            android:layout_height="wrap_content"
            android:background="@drawable/pause"
            android:clickable="true"
            android:cursorVisible="true"
            android:src="@drawable/pause" >
        </Button>

        <Button
            android:id="@+id/btn_stop"
            android:layout_width="90dp"
            android:layout_height="wrap_content"
            android:background="@drawable/stop"
            android:clickable="true"
            android:cursorVisible="true"
            android:src="@drawable/stop" >
        </Button>
    </LinearLayout>

    <SeekBar
        android:id="@+id/seekBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="3dp" >
    </SeekBar>

    <ImageView
        android:id="@+id/imageView3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/scast" />

    <TextView
        android:id="@+id/Textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:gravity="center"
        android:hint="@string/version" >
    </TextView>

</LinearLayout>

有人可以告诉我我做错了什么，或者可以重写我所拥有的并且仍然保持一切正常提前谢谢 Rob

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