Drag,Move ImageView in Android

Hello Friends Here is Code for image drag and move

move image view in android anywhere in device screen for that here some code for that move image view using single touch,
drag image view in android

java Code 

importandroid.app.Activity;

import android.os.Bundle;

importandroid.view.MotionEvent;

import android.view.View;

importandroid.widget.ImageView;

import android.widget.LinearLayout.LayoutParams;

public class MainActivity extends Activity {

       int windowwidth;

       int windowheight;

       private LayoutParams layoutParams;

       @Override

       public void onCreate(Bundle savedInstanceState) {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.activity_main);

              windowwidth = getWindowManager().getDefaultDisplay().getWidth();

              windowheight = getWindowManager().getDefaultDisplay().getHeight();

              final ImageView img = (ImageView) findViewById(R.id.imageView1);

              img.setOnTouchListener(newView.OnTouchListener() {

                     @Override

                     public boolean onTouch(View v, MotionEvent event) {

                           LayoutParams layoutParams = (LayoutParams) img

                                         .getLayoutParams();

                           switch (event.getAction()) {

                           case MotionEvent.ACTION_DOWN:

                                  break;

                           case MotionEvent.ACTION_MOVE:

                                  int x_cord = (int) event.getRawX();

                                  int y_cord = (int) event.getRawY();

                                  if (x_cord > windowwidth) {

                                         x_cord = windowwidth;

                                  }

                                  if (y_cord > windowheight) {

                                         y_cord = windowheight;

                                  }

                                  layoutParams.leftMargin = x_cord - 25;

                                  layoutParams.topMargin = y_cord - 75;

                                  img.setLayoutParams(layoutParams);

                                  break;

                           default:

                                  break;

                           }

                           return true;

                     }

              });

       }

}

========================================================
layout.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

     >

    <ImageView

        android:id="@+id/imageView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:src="@drawable/ball" />

    <ImageView

        android:id="@+id/imageView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:src="@drawable/space_icon" />

</LinearLayout>

thanks Enjoy...!