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POmissing ImageView sources the first time i Drag and Drop in my GridView
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  1. POmissing ImageView sources the first time i Drag and Drop in my GridView
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    copied!<p>I made a drag and drop GridView. Everything works perfectly except for the first drag and drop. I cant find the reason why it only happends the first time.</p> <p>The first time i drag a item over the other items in the gridview, the imageview sources of the items are lost. When i drop it the sources will be fixed.. After that every thing will work just normal. Any idea how i can fix this or the cause of the strange behavior. Every help is welcome.</p> <p>here is my touchListener wich will handle the drag and drop:</p> <pre><code>mGridView.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) { GridView parent = (GridView) v; int x = (int) event.getX(); int y = (int) event.getY(); int position = parent.pointToPosition(x, y); if (position &gt; AdapterView.INVALID_POSITION) { int count = parent.getChildCount(); for (int i = 0; i &lt; count; i++) { View curr = parent.getChildAt(i); curr.setOnDragListener(new View.OnDragListener() { @Override public boolean onDrag(View v, DragEvent event) { boolean result = true; int action = event.getAction(); switch (action) { case DragEvent.ACTION_DRAG_STARTED: break; case DragEvent.ACTION_DRAG_LOCATION: break; case DragEvent.ACTION_DRAG_ENTERED: setBlueFilterOnImageView((ImageView) v, getActivity()); break; case DragEvent.ACTION_DRAG_EXITED: clearColorFilterOnImageView((ImageView) v); break; case DragEvent.ACTION_DROP: if (event.getLocalState() == v) { result = false; } else { View droped = (View) event.getLocalState(); View target = v; app.myProfile().removeProfilePhotoAtIndex(((DragGridItemHolder) droped.getTag()).position); app.myProfile().insertProfilePhoto(((DragGridItemHolder) droped.getTag()).id, ((DragGridItemHolder) target.getTag()).position); mAdapter.notifyDataSetChanged(); } break; case DragEvent.ACTION_DRAG_ENDED: clearColorFilterOnImageView((ImageView) v); break; default: result = false; break; } return result; } }); } int relativePosition = position - parent.getFirstVisiblePosition(); View target = (View) parent.getChildAt(relativePosition); DragGridItemHolder holder = (DragGridItemHolder) target.getTag(); String text = holder.id; ClipData data = ClipData.newPlainText("DragData", text); target.startDrag(data, new View.DragShadowBuilder(target), target, 0); } } return false; } }); </code></pre> <p><strong>EDIT</strong></p> <pre><code>public static void setBlueFilterOnImageView(ImageView imageView, Context context){ PorterDuffColorFilter blueFilter = new PorterDuffColorFilter( context.getResources().getColor(R.color.grid_state_focused), PorterDuff.Mode.SRC_ATOP); imageView.setColorFilter(blueFilter); imageView.setBackgroundColor(context.getResources().getColor( R.color.grid_state_pressed)); } </code></pre>
 

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