Android实现GridView中ImageView动态变换的方法

private final ArrayList<ListItem> mItems = new ArrayList<ListItem>(); // public static final int ITEM_SHORTCUT = 0;

// public static final int ITEM_APPWIDGET = 1; // public static final int ITEM_LIVE_FOLDER = 2;

// public static final int ITEM_WALLPAPER = 3; /**

* Specific item in our list. */

public class ListItem { public final CharSequence text;

public final Drawable image; //public final int actionTag;

public final Drawable touchimage; //, int actionTag

public ListItem(Resources res, int textResourceId, int imageResourceId,int touchImageResourceId) { text = res.getString(textResourceId);

if (imageResourceId != -1) { image = res.getDrawable(imageResourceId);

} else { image = null;

} if (touchImageResourceId != -1) {

touchimage = res.getDrawable(touchImageResourceId); } else {

touchimage = null; }

} }

public AddAdapter(MainActivity launcher) { super();

mInflater = (LayoutInflater) launcher.getSystemService(Context.LAYOUT_INFLATER_SERVICE); // Create default actions

Resources res = launcher.getResources(); mItems.add(new ListItem(res, R.string.item1,

R.drawable.item1, R.drawable.item1back)); mItems.add(new ListItem(res, R.string.item2,

R.drawable.item2, R.drawable.item2back)); mItems.add(new ListItem(res, R.string.item3,

R.drawable.item3, R.drawable.item3back)); mItems.add(new ListItem(res, R.string.item4,

R.drawable.item4, R.drawable.item4back)); }

public View getView(int position, View convertView, ViewGroup parent) { final ListItem item = (ListItem) getItem(position);

if (convertView == null) { convertView = mInflater.inflate(R.layout.grid_item, parent, false);