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POAndroid Drag a View and change his Parent
 

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  1. POAndroid Drag a View and change his Parent
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    <p>I need a way to do a drag and drop between a child view to a parent view. So I will put a image for better explanation:</p> <p><img src="https://i.stack.imgur.com/mP5rJ.png" alt="enter image description here"></p> <p>Yellow represent a class that extends RelativeLayout. Black represent a class that extends ViewGroup White represents ImageViews Red represents a View</p> <p>So I need to drop White Blocks(ImageViews) on Yellow View, but I only drag over Black View, because ImageView has a BlackView like a father, so my solution for now is change father´s dragged view, but when I add a view on YellowView this cancel my drag event, so I need to continue drag when I change between Views. Note, there is a only way for WhiteView that is place on RedView, if Touch up and White view is far of RedView White block will back to BlackView.</p> <p>So, i using this code I get from web:</p> <pre><code> public boolean onTouch(View v, MotionEvent event) { int action = event.getAction(); switch (action &amp; MotionEvent.ACTION_MASK) { case MotionEvent.ACTION_DOWN: touchDown(event); break; case MotionEvent.ACTION_MOVE: touchMove(event); break; case MotionEvent.ACTION_UP: touchUp(event); break; } if (aViewIsDragged()) return true; return false; } private void touchDown(MotionEvent event) { initialX = (int)event.getRawX(); initialY = (int)event.getRawY(); lastTouchX = (int)event.getRawX() + (gridPageWidth); lastTouchY = (int)event.getRawY(); } public boolean onLongClick(View v) { if(positionForView(v) != -1) { movingView = true; dragged = positionForView(v); return true; } return false; } private void touchMove(MotionEvent event) { if (movingView &amp;&amp; aViewIsDragged()) { lastTouchX = (int) event.getX(); lastTouchY = (int) event.getY(); moveDraggedView(lastTouchX, lastTouchY); manageSwapPosition(lastTouchX, lastTouchY); manageEdgeCoordinates(lastTouchX); manageDeleteZoneHover(lastTouchX, lastTouchY); } } private void moveDraggedView(int x, int y) { ImageView child = null; View childAt = getChildAt(dragged); int width = childAt.getMeasuredWidth(); int height = childAt.getMeasuredHeight(); int left = x - (1 * width / 2); int t = y - (1 * height / 2); childAt.layout(left, t, left + width, t + height); //TODO at this point if left less than 0, I detect part of view is out and I need to change this view to Yello if (left &lt;0){ child = (ImageView) childAt; ViewGroup parent = (ViewGroup) getParent(); cloneimage = new ImageView(getContext()); cloneimage.setBackgroundDrawable(child.getDrawable()); parent.addView(cloneimage); } } </code></pre> <p>So I think it´s a little dificult, but If any one help me change a WhiteView from Black to Yellow and keep dragged I will apreciate.</p> <p>Thank´s!</p>
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    1. USRicardo
    1. USRicardo
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    1. COCan you edit your question and include the code that you are using now?
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      1. USFoamyGuy
    2. CO@FoamyGuy ok, I put a piece of code, If you need more information I will edit again.
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      1. USRicardo
 

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