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