Add / remove views dynamically

[fabiodelorenzo]

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package info.delorenzo.mpt3;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;

public class MediaPlayerTest3Activity extends Activity {
   Button btn, btn1;
    LayoutInflater linflater;
    LinearLayout l;
    static int pos = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btn = (Button) findViewById(R.id.Button01);
        btn1 = (Button) findViewById(R.id.Button02);
        l = (LinearLayout) findViewById(R.id.LinearLayout01);
        linflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        btn.setOnClickListener(new myListener());
        btn1.setOnClickListener(new myListener1());
        Log.d("fabio","int pos="+pos);
    }

    class myListener implements View.OnClickListener {
        @Override
        public void onClick(View v) {
           Log.d("fabio","before pos="+pos);
            View myView = linflater.inflate(R.layout.dynamicoption, null);
            myView.setId(pos);
            pos++;
            l.addView(myView);
            Log.d("fabio","after  pos="+pos);
        }
    }

    class myListener1 implements View.OnClickListener {
        @Override
        public void onClick(View v) {
           Log.d("fabio","before pos="+pos);
            if (pos != 0) {
                pos--;
                View myView = l.findViewById(pos);
                l.removeView(myView);
            }
            Log.d("fabio","after  pos="+pos);
        }
    }
}

main.xml

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<?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="horizontal">

    <Button android:id="@+id/Button01" android:background="@drawable/plus"
        android:layout_height="45dip" android:layout_width="45dip"></Button>

    <Button android:id="@+id/Button02" android:background="@drawable/minus"
        android:layout_height="45dip" android:layout_width="45dip"></Button>

    <LinearLayout android:id="@+id/LinearLayout01"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:orientation="vertical"></LinearLayout>
</LinearLayout>

dynamicoption.xml

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<?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="horizontal">
    <EditText android:text="newtext" android:id="@+id/EditText01"
        android:layout_width="wrap_content" android:layout_height="wrap_content"></EditText>
    <Button android:text="newtextbutton" android:id="@+id/Button01"
        android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>