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;

import android.widget.TextView;



public class HowToPlay extends Activity implements View.OnTouchListener {

ImageView _image;
TextView _view;

ViewGroup _root;
private int _xDelta;

private int _yDelta;

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

    setContentView(R.layout.activity_how_to_play);

    _root = (ViewGroup)findViewById(R.id.root);

    _view = new TextView(this);
    _view.setText("TextView!!!!!!!!");

    RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(150, 50);

    layoutParams.leftMargin = 50;
    layoutParams.topMargin = 50;

    layoutParams.bottomMargin = -250;
    layoutParams.rightMargin = -250;

    _view.setLayoutParams(layoutParams);

    _view.setOnTouchListener(this);
    _root.addView(_view);

}

public boolean onTouch(View view, MotionEvent event) {

    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_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;

    }
    _root.invalidate();
    return true;

}}