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package com.mobeta.android.dslv;
import android.graphics.Bitmap;
import android.graphics.Point;
import android.graphics.Color;
import android.widget.ListView;
import android.widget.ImageView;
import android.view.View;
import android.view.ViewGroup;
import android.util.Log;
/**
* Simple implementation of the FloatViewManager class. Uses list
* items as they appear in the ListView to create the floating View.
*/
public class SimpleFloatViewManager implements DragSortListView.FloatViewManager {
private Bitmap mFloatBitmap;
private ImageView mImageView;
private int mFloatBGColor = Color.BLACK;
private ListView mListView;
public SimpleFloatViewManager(ListView lv) {
mListView = lv;
}
public void setBackgroundColor(int color) {
mFloatBGColor = color;
}
/**
* This simple implementation creates a Bitmap copy of the
* list item currently shown at ListView <code>position</code>.
*/
@Override
public View onCreateFloatView(int position) {
// Guaranteed that this will not be null? I think so. Nope, got
// a NullPointerException once...
View v = mListView.getChildAt(position + mListView.getHeaderViewsCount() - mListView.getFirstVisiblePosition());
if (v == null) {
return null;
}
v.setPressed(false);
// Create a copy of the drawing cache so that it does not get
// recycled by the framework when the list tries to clean up memory
//v.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
v.setDrawingCacheEnabled(true);
mFloatBitmap = Bitmap.createBitmap(v.getDrawingCache());
v.setDrawingCacheEnabled(false);
if (mImageView == null) {
mImageView = new ImageView(mListView.getContext());
}
mImageView.setBackgroundColor(mFloatBGColor);
mImageView.setPadding(0, 0, 0, 0);
mImageView.setImageBitmap(mFloatBitmap);
mImageView.setLayoutParams(new ViewGroup.LayoutParams(v.getWidth(), v.getHeight()));
return mImageView;
}
/**
* This does nothing
*/
@Override
public void onDragFloatView(View floatView, Point position, Point touch) {
// do nothing
}
/**
* Removes the Bitmap from the ImageView created in
* onCreateFloatView() and tells the system to recycle it.
*/
@Override
public void onDestroyFloatView(View floatView) {
((ImageView) floatView).setImageDrawable(null);
mFloatBitmap.recycle();
mFloatBitmap = null;
}
}
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