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    <p>EDIT:</p> <p>You indeed need to use <a href="http://developer.android.com/reference/android/graphics/Path.html" rel="nofollow">Path</a> class in android. Sorry I couldn't come up with a code snippet. But here's something to get you started off.</p> <p>When you draw a line - <code>canvas.drawLine(x1, y1, x2, y2, paint);</code> your starting point is <code>(x1,y1)</code>. now, if you need to pull the line from any end, you need to first fix the other end. Say you pull from <code>(x2,y2)</code> . So <code>(x1,y1)</code> becomes constant and you pull from the other end. When using the Path class, first call a <code>moveTo()</code> to this fix point. What it does is it gives a point about which the line has to be moved. Then, you can use the <code>lineTo()</code> call on the touch events to stretch the line accordingly. A lot of tweaking will be needed. But this is what can get you started. Sorry I couldn't come up with a snippet, little short on time. See the documentation of the Path class. You might find some more helpful things.</p> <hr> <p>EDIT:</p> <p>About adding touch listeners to points:</p> <p>Suppose you have a line from <code>(x1,y1)</code> to <code>(x2,y2)</code>.</p> <p>Now to get touch listener for a point, you can add an onTouchListener to your whole view.</p> <pre><code>final View touchView = findViewById(R.id.touchView); touchView.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if(event.getX() == x2 &amp;&amp; event.getY() == y2) { //you know that you have clicked on the rear end of the line,so now you can do your dragging stuff. if(event.getAction() == MotionEvent.ACTION_DOWN){ //you know user has clicked in order to draw //redraw the existing line with black color to remove it paint.setColor(Color.BLACK); canvas.drawLine(x1, y1, x2, y2, paint); //reset the paint object paint.setColor(Color.WHITE); //now use moveTo() and lineTo() to attain the functionality of dragging on your Path object path.moveTo(x1,y1); path.lineTo(event.getX(),event.getY()); }else if(event.getAction() == MotionEvent.ACTION_MOVE){ path.lineTo(event.getX(),event.getY()); }else if(event.getAction() == MotionEvent.ACTION_UP){ } } return true; } }); </code></pre> <p>This is just an idea, I still didn't get the opportunity to test it. I hope it helps.</p>
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    1. POHow to draw a lines between points and pull those points?
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    1. USKazekage Gaara
    1. USKazekage Gaara
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    1. COthis is just for drawing with finger, read my question if you did't get let me know.
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      1. USRajaReddy PolamReddy
    2. COohh..ok..you want that first user clicks on a point,then clicks on another point,and then there is a line between those points,right?
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      1. USKazekage Gaara
    3. COno, already i have a line between two points now i want to drag one point to extend line without changing another point.. like changing the triangle size..
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      1. USRajaReddy PolamReddy
 

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