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POAndroid Implement onTouchListener on path objects
 

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  1. POAndroid Implement onTouchListener on path objects
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    <p>I have created a path objects as shown below which draws a different shapes.Different buttons response to drawing different shapes on the canvas. I would like to shift the path objects that i have created in the canvas but I do not know how to.</p> <p>I only know the method of implementing ontouchlistener on a bitmap and not on path objects.</p> <p>my codes are as follows:</p> <pre><code>ArrayList&lt;Path&gt; paths = new ArrayList&lt;Path&gt;(); @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); paintColor.setColor(Color.RED); paintColor.setStrokeWidth(2); paintColor.setStyle(Paint.Style.STROKE); if (MainActivity.isRectangle) { Path path = new Path(); path.moveTo(1, 1); path.lineTo(90, 1); path.lineTo(90, 60); path.lineTo(1, 60); path.close(); paths.add(path); } for (Path p : paths) { canvas.drawPath(p, paintColor ); } canvas.drawPath(path, paintColor); invalidate(); } //mainActivity rectbutton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub isTriangle = false; isRectangle = true; isCircle= false; isParallelogram = false; isTapezium = false; dv.invalidate(); }// onclick }); </code></pre> <p>onTouchEvent</p> <pre><code>@Override public boolean onTouch(View v,MotionEvent event){ switch(event.getAction()){ case MotionEvent.ACTION_DOWN: //screen touch get x of the touch event x = event.getX(); //screen touch get y of the touch event y =event.getY(); for (Path p : paths) { path.moveTo(x,y); } dv.invalidate(); break; case MotionEvent.ACTION_UP: //screen touch get x of the touch event x = event.getX(); //screen touch get y of the touch event y =event.getY(); break; case MotionEvent.ACTION_MOVE: //screen touch get x of the touch event x = event.getX(); //screen touch get y of the touch event y =event.getY(); break; } return true; } </code></pre> <p>Please advice. Thank you.</p>
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