Android自定义图库视图,设置自己的边框

Question

我已经实现了GalleryView.我想在Gallery中选择的图像上显示边框图像.

Gallery ga = (Gallery)findViewById(R.id.Gallery01);
    ga.setAdapter(new ImageAdapter(this));//, android.R.layout.simple_list_item_1, items));

    imageView = (ImageView)findViewById(R.id.ImageView01);
    ga.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> adapter, View view, int location,
                long arg3) {
            imageView.setImageResource(items.get(location));

            final ImageView iv = (ImageView) adapter.getSelectedView();
            iv.setBackgroundResource(R.drawable.large_button_sel_liner);
        }
    });

和我的Adapter类

class ImageAdapter1 extends ArrayAdapter<Integer> {

    private Context ctx;
    private List<Integer> items;

    public ImageAdapter1(Context context, int textViewResourceId,
            List<Integer> objects) {
        super(context, textViewResourceId, objects);
        items = objects;
        ctx = context;
    }

    @Override
    public int getCount() {
        return items.size();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final ImageView iv = new ImageView(ctx);
        iv.setImageResource(items.get(position));
        iv.setScaleType(ImageView.ScaleType.FIT_XY);
        iv.setLayoutParams(new Gallery.LayoutParams(150,120));

        return iv;
    }
}!

它完全被捣碎了.

Answer 1

我有使用Selector的解决方案.

我创建了galleryselector.xml

<?xml version="1.0" encoding="utf-8"?>  <selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item  android:state_selected="true" 
                    android:drawable="@drawable/large_button_sel_liner"/>
    <item android:drawable="@android:color/transparent" /></selector>

并在getView()中的Adapter类中设置它:

imageView.setBackgroundDrawable(getResources().getDrawable(R.drawable.galleryselector));