在安卓系统中,要让可绘制的图像在ListView中充满整个屏幕,可以通过以下步骤实现:
以下是一个示例代码:
public class CustomAdapter extends ArrayAdapter<Drawable> {
private Context mContext;
private int mResource;
private List<Drawable> mDrawables;
public CustomAdapter(Context context, int resource, List<Drawable> drawables) {
super(context, resource, drawables);
mContext = context;
mResource = resource;
mDrawables = drawables;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater inflater = LayoutInflater.from(mContext);
convertView = inflater.inflate(mResource, parent, false);
}
Drawable drawable = mDrawables.get(position);
convertView.setBackground(drawable);
// 设置布局参数,将列表项的高度设置为屏幕的高度
DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
int screenHeight = displayMetrics.heightPixels;
ViewGroup.LayoutParams layoutParams = convertView.getLayoutParams();
layoutParams.height = screenHeight;
return convertView;
}
}
然后,在使用ListView的Activity中,可以这样设置适配器:
ListView listView = findViewById(R.id.listView);
List<Drawable> drawables = new ArrayList<>();
// 添加可绘制的图像到drawables列表中
CustomAdapter adapter = new CustomAdapter(this, R.layout.list_item_layout, drawables);
listView.setAdapter(adapter);
这样,可绘制的图像就会在ListView中充满整个屏幕了。
请注意,以上代码仅为示例,实际使用时需要根据具体需求进行适当修改。
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