Darg Image onTouch finger in android

In this blog implement the drag image onTouch ImageView and Move the same image. the image show as motion Animation on touch finger effect. explain code



<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
      >

     <TextView
         android:id="@+id/textView1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentTop="true"
         android:layout_centerHorizontal="true"
         android:layout_marginTop="92dp"
         android:textSize="30dip"
         android:text="Android Beginner point" />

     <RelativeLayout
         android:id="@+id/im"
         android:layout_width="200dip"
         android:layout_height="200dip"
         android:layout_alignParentBottom="true"
         android:layout_centerHorizontal="true"
         android:layout_marginBottom="38dp"
         android:gravity="center" >

         <ImageView
             android:id="@+id/imageView1d"
             android:layout_width="200dip"
             android:layout_height="200dip"
             android:layout_alignParentTop="true"
             android:layout_centerHorizontal="true"
             android:src="@drawable/gh" />

         <ImageView
             android:id="@+id/imageView1"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_alignTop="@+id/imageView1d"
             android:layout_centerHorizontal="true"
             android:layout_marginTop="21dp"
             android:src="@drawable/dsf" />

     </RelativeLayout>

</RelativeLayout>


Drag.java
create the Drag Class inside src/..folder
..................................................................................................................

package com.androidbeginner.testcode;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RelativeLayout;

@SuppressLint("ClickableViewAccessibility")
public class Drag extends Activity implements View.OnTouchListener {

private ImageView mImageView1, mImageView13;
private ViewGroup mRrootLayout, mRrootLayouts;
private int _xDelta;
private int _yDelta;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.drag);
mRrootLayout = (ViewGroup) findViewById(R.id.root);
mRrootLayouts = (ViewGroup) findViewById(R.id.im);

mImageView1 = (ImageView) mRrootLayouts.findViewById(R.id.imageView1);

mImageView1.setOnTouchListener(this);

}

public boolean onTouch(View view, MotionEvent event) {

RelativeLayout.LayoutParams layoutParams1 = new RelativeLayout.LayoutParams(
120, 120);
mImageView1.setLayoutParams(layoutParams1);
final int X = (int) event.getRawX();
final int Y = (int) event.getRawY();

switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:

RelativeLayout.LayoutParams lParams = (RelativeLayout.LayoutParams) view
.getLayoutParams();
_xDelta = X - lParams.leftMargin;
_yDelta = Y - lParams.topMargin;

break;
case MotionEvent.ACTION_UP:

break;

case MotionEvent.ACTION_POINTER_DOWN:
break;

case MotionEvent.ACTION_POINTER_UP:
break;
case MotionEvent.ACTION_CANCEL: {

mImageView13.getBackground().clearColorFilter();
mImageView13.invalidate();
break;
}

case MotionEvent.ACTION_MOVE:

RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) view
.getLayoutParams();
layoutParams.leftMargin = X - _xDelta;
layoutParams.topMargin = Y - _yDelta;
layoutParams.rightMargin = -250;
layoutParams.bottomMargin = -250;
view.setLayoutParams(layoutParams);

break;

}
mRrootLayout.invalidate();
mRrootLayouts.invalidate();
return true;
}

}