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Thread: How to draw a color rectangle when I tap on android phone screen???????????????????

  1. #1
    Junior Member
    Join Date
    Jul 2014
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    Default How to draw a color rectangle when I tap on android phone screen???????????????????

    I am trying to display a rectangle when i tap on my android phone screen after I run the android project. This is what I have tried so far . Could anyone give an idea what to use in onTouchListener method to actually make a rectangle display when i tap ??

    package example.rectangle;
    import android.content.Context;
    import android.graphics.Canvas;
    import android.graphics.Paint;
    import android.graphics.Rect;
    import android.graphics.drawable.Drawable;
    import android.graphics.drawable.ShapeDrawable;
    import android.graphics.drawable.shapes.*;
    import android.os.Bundle;
    import android.os.Handler;
    import android.os.Message;
    import android.util.AttributeSet;
    import android.util.Log;
    import android.view.KeyEvent;
    import android.view.MotionEvent;
    import android.view.View;
    import java.util.Timer;
    import java.util.TimerTask;
    public class RectView extends View
    	ShapeDrawable rect ;
    	public Rect rect1 ;
    	public int argbColour ;
        public RectView(Context context , AttributeSet attrs) 
    		super(context , attrs);
        public RectView (Context context , AttributeSet attrs , int defStyle)
        	super(context , attrs , defStyle);
         private void initRectangle()
        	 rect = new ShapeDrawable(new RectShape());
    //Draws the rectangle on canvas with a ShapeDrawable object
    public void onDraw(Canvas canvas)
       rect.setBounds(250, 25,450, 600);
    //view.setOnTouchListener(new TouchListener());
    public class TouchListener implements View.OnTouchListener
    	public boolean onTouch(View v, MotionEvent e) {
    		// TODO Auto-generated method stub
    		if (v.getId()==R.id.rect )
    			// how to draw rectangle while the user tap on screen???????
    		return true;
    // *******************Another activity class*****************
    package example.rectangle;
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.Menu;
    import android.view.MenuItem;
    public class RectActivity extends Activity {
    	private RectView rectView; 
    	public void onCreate(Bundle savedInstanceState)
    	{   super.onCreate(savedInstanceState);
    	  	rectView = (RectView)findViewById(R.id.rect);
    	  	if (savedInstanceState != null)
    	  	{  // activity being restored from earlier launch

  2. #2
    Junior Member
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    Sep 2014
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    Default Re: How to draw a color rectangle when I tap on android phone screen???????????????????

    what if you just create a large transparent button that covers whole screen and when it is clicked then it draws rectangle.

    --- Update ---

    I think if you insert

    mSquare = new Square();

    it might work

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