android headset or headphone button controller

download:   http://www.mediafire.com/download/0667cfia4yo0yig/HeadsetControll.zip

package com.headset;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioManager;
import android.os.Bundle;
import android.util.Log;

public class AudioEqualizerActivity extends Activity {

    // Using LinearLayout instead of R.layout.main (main.xml)
    BroadcastReceiver broadcastsHandler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

        IntentFilter filter = new IntentFilter(Intent.ACTION_MEDIA_BUTTON);// "android.intent.action.MEDIA_BUTTON"
        MediaButtonReceiver r = new MediaButtonReceiver();
        filter.setPriority(100);
        registerReceiver(r, filter);

        // unregisterReceiver(broadcastsHandler);

        Log.e("----onCreate--", " ");

    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();

        broadcastsHandler = new MediaButtonReceiver();

        registerReceiver(broadcastsHandler, new IntentFilter(
                Intent.ACTION_HEADSET_PLUG));

        registerMediaButton(AudioEqualizerActivity.this);
    }

    public static void registerMediaButton(Context context) {

        AudioManager audioManager = (AudioManager) context
                .getSystemService(Context.AUDIO_SERVICE);
        ComponentName receiver = new ComponentName(context.getPackageName(),
                MediaButtonReceiver.class.getName());
        audioManager.registerMediaButtonEventReceiver(receiver);
    }

    /**
     * Unregister the media buttons from AudioManager.
     *
     * @param context
     *            A context to use.
     */
    public static void unregisterMediaButton(Context context) {
        AudioManager audioManager = (AudioManager) context
                .getSystemService(Context.AUDIO_SERVICE);
        ComponentName receiver = new ComponentName(context.getPackageName(),
                MediaButtonReceiver.class.getName());
        audioManager.unregisterMediaButtonEventReceiver(receiver);
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();

        unregisterReceiver(broadcastsHandler);
        unregisterMediaButton(AudioEqualizerActivity.this);

    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();

        unregisterReceiver(broadcastsHandler);
        unregisterMediaButton(AudioEqualizerActivity.this);

    }
}




package com.headset;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

public class MediaButtonReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.e("----onReceive--", " ");

        if (Intent.ACTION_HEADSET_PLUG.equals(intent.getAction())) {
           
            Log.e("----jack out--", " ");

            if (intent.getExtras().getInt("state") == 1)// if plugged
                Toast.makeText(context, "earphones plugged", Toast.LENGTH_LONG)
                        .show();
            else
                Toast.makeText(context, "earphones un-plugged",
                        Toast.LENGTH_LONG).show();
        }

        if (Intent.ACTION_MEDIA_BUTTON.equals(intent.getAction())) {
            Toast.makeText(context, "button pressed", Toast.LENGTH_LONG).show();
            // key=intent.getExtras().getString("EXTRA_KEY_EVENT");

        }
       
        abortBroadcast();

    }
}



mainifest
------------------------

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.headset"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="9" />

    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <!-- This is needed for isWiredHeadsetOn() to work in some cases. (bug?) -->
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".AudioEqualizerActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver android:name="com.headset.MediaButtonReceiver" >
            <intent-filter android:priority="10" >
                <action android:name="android.intent.action.MEDIA_BUTTON" />
            </intent-filter>
            <intent-filter android:priority="20" >
                <action android:name="android.intent.action.HEADSET_PLUG" />
            </intent-filter>
        </receiver>
    </application>

</manifest>