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我只是想监视MediaPlayer使用的所有流量，并在TextView上向用户显示此数据使用情况，但这不会仅在第一次它返回一些字节而不增加这些字节在处理程序线程上虽然它增加了处理程序上的计数器如何监视媒体播放器收到的NetworkTraffic
点击Start MediaPlayer应该启动并且数据使用的数值也应该增加，同时点击停止MediaPlayer停止并且相应的NetworkUsage数据增量也应该停止
这适用于计数器，但不适用于 mStartRx = TrafficStats.getUidRxBytes（Process.myUid（））;
请帮助 这里是代码片段我在Android已经试过2.2 API级别8
public class AndroidHandlerRunnableActivity extends Activity
{
private int cnt = 0;
Button Start, Stop;
TextView counter;
long mStartRx;
private Handler handler = new Handler();
private MediaPlayer mediaPlayer;
ProgressDialog progressDialog;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
counter = (TextView)findViewById(R.id.counter);
Start = (Button)findViewById(R.id.Start);
Start.setEnabled(true);
Stop = (Button)findViewById(R.id.Stop);
Stop.setEnabled(false);
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setOnPreparedListener(new MediaOnPreparedListener());
String networkURL = "http://currentstream1.publicradio.org/";
try
{
mediaPlayer.setDataSource(networkURL);
}
catch (Exception e)
{
e.printStackTrace();
}
mediaPlayer.prepareAsync();
mStartRx = TrafficStats.getUidRxBytes(Process.myUid());
progressDialog = ProgressDialog.show(this, "Playing audio", "Please wait....");
Start.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View v)
{
handler.post(timedTask);
mediaPlayer.start();
Start.setEnabled(false);
Stop.setEnabled(true);
}
});
Stop.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
handler.removeCallbacks(timedTask);
mediaPlayer.stop();
Start.setEnabled(true);
Stop.setEnabled(false);
}
});
}
private class MediaOnPreparedListener implements MediaPlayer.OnPreparedListener
{
@Override
public void onPrepared(MediaPlayer mp)
{
if (progressDialog != null)
{
progressDialog.dismiss();
}
}
}
private Runnable timedTask = new Runnable()
{
@Override
public void run()
{
cnt++;
mStartRx = TrafficStats.getUidRxBytes(Process.myUid());
counter.setText(String.valueOf(cnt)+" Data "+mStartRx);
handler.postDelayed(timedTask, 2000);
}
};
@Override
protected void onStop()
{
super.onStop();
if (mediaPlayer != null)
{
mediaPlayer.stop();
mediaPlayer.reset();
mediaPlayer.release();
}
}
}
如需更多帮助，这是我的布局文件
<?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:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:id="@+id/Start"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Start" />
<Button
android:id="@+id/Stop"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Stop" />
<TextView
android:id="@+id/counter"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
而且manifiest文件是为如下
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.exercise.AndroidHandlerRunnable"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".AndroidHandlerRunnableActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>