问若要使用复选框将背景音乐从1个活动停止到另一个活动？

EN

public class MainActivity extends Activity implements View.OnClickListener {
    MediaPlayer bkgrdmsc;
    private int lmusic_checked = SettingsActivity.music_checked;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

if (lmusic_checked == 0){
        bkgrdmsc = MediaPlayer.create(MainActivity.this, R.raw.backgroundmusic);
        bkgrdmsc.setLooping(true);
        bkgrdmsc.start();

    }
 @Override
protected void onPause() {
    if (lmusic_checked == 0){
        bkgrdmsc.release();
    }
    SettingsActivity.music_checked =0;
    super.onPause();
    bkgrdmsc.release();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    //inflate the menu; this adds items to the action bar if this is present
    super.onCreateOptionsMenu(menu);
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu_main, menu);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if (id == R.id.action_settings) {
        Intent s_intent = new Intent(this, SettingsActivity.class);
        startActivity(s_intent);
        return true;
    }
    else if (id == R.id.logo_home){
        Intent t_intent = new Intent(this, Twitter.class);
        startActivity(t_intent);
        return true;
    }


    return super.onOptionsItemSelected(item);

}

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical" android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:weightSum="1">

    <TextView
        android:layout_width="271dp"
        android:layout_height="77dp"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="@string/c_general"
        android:id="@+id/textView"
        android:layout_gravity="center_vertical"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="57dp"
        android:textSize="26dp" />

    <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/turn_on_music"
        android:id="@+id/CheckBox"
        android:layout_below="@+id/textView"
        android:layout_centerHorizontal="true"
        android:checked="false"
        android:singleLine="false"
        android:textColor="#000000" />
</RelativeLayout>

package com.example.json.publicomidas;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.CheckBox;
import android.widget.CompoundButton;




public class SettingsActivity extends Activity {

public static int music_checked= 0;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.action_settings);

    music_off();
}
public void music_off(){
    CheckBox checkBox1 = (CheckBox) findViewById(R.id.CheckBox);
    checkBox1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if (buttonView.isChecked()) {

                music_checked = 1;
            } else {
                music_checked = 0;
            }
        }
    });

}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    //inflate the menu; this adds items to the action bar if this is present
    super.onCreateOptionsMenu(menu);
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu_settings, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.home) {
        Intent s_intent = new Intent(this, MainActivity.class);
        startActivity(s_intent);

        return true;

    }
    return super.onOptionsItemSelected(item);

    }
}