Android control, EditText app

<?xml version= "1.0" encoding= "Utf-8"?>
<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
    android:orientation= "vertical" android:layout_width= "match_parent"
    android:layout_height= "Match_parent" >

    <imageview
        Android:id= "@+id/image_view"
        Android:layout_width= "Wrap_content"
        android:layout_height= "Wrap_content"
        android:src= "@drawable/ic_launcher"/>

    <button
        Android:layout_width= "Wrap_content"
        android:layout_height= "Wrap_content"
        android:text= "Confirm"
        android:layout_gravity= "Center"/>

</LinearLayout>

Package com.example.uiwidgettest2;

Import android.app.Activity;
Import Android.os.Bundle;
Import Android.view.View;
Import android.widget.*;

public class Edittextactivity extends Activity implements view.onclicklistener{

    Private ImageView IV;
    Private Button btn;

    @Override
    protected void OnCreate (Bundle savedinstancestate) {
        Super.oncreate (savedinstancestate);
        Setcontentview (R.layout.edittext);
        BTN = (Button) Findviewbyid (R.id.button);
        IV = (ImageView) Findviewbyid (R.id.image_view);
        Btn.setonclicklistener (this);
    }

    @Override
    public void OnClick (View v) {
        Switch (V.getid ()) {
            Case R.id.button:
                Iv.setimageresource (R.DRAWABLE.DST);
                Break
            Default
                Break
        }
    }
}

Android control, EditText app