我想在设置适配器之后或之前为listactivity中的列表视图上的某些项目自定义一些设置(颜色,边距)。我怎样才能做到这一点?我可以覆盖任何功能吗?
谢谢。
答案 0 :(得分:3)
您可以使用自己的listadapter .. http://www.vogella.com/articles/AndroidListView/article.html
答案 1 :(得分:0)
您可以通过以下方式自定义列表中的项目:
列表布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
每个项目的布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/text"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
/>
</LinearLayout>
最后你的活动:
public class MyActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list_activitty);
final List<String> list = new ArrayList<String>();
list.add("test");
list.add("test");
list.add("test");
final CustomAdapter adapter = new CustomAdapter(this, list);
final ListView listView = getListView();
listView.setAdapter(adapter);
}
public class CustomAdapter extends BaseAdapter {
private Context mContext;
private List<String> mList;
public CustomAdapter(Context context, List<String> list) {
mContext = context;
mList = list;
}
@Override
public int getCount() {
return mList.size();
}
@Override
public String getItem(int position) {
return mList.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final Holder holder;
if (convertView == null) {
// if it is the first time you create the row
// you get the layout of each row here
convertView = LayoutInflater.from(mContext).inflate(R.layout.item_list, null);
// you keep your layout in a holder
holder = new Holder();
holder.mText = (TextView) convertView.findViewById(R.id.text);
convertView.setTag(holder);
} else {
// if the row has already been created, you get it from the holder
holder = (Holder) convertView.getTag();
}
// you do what you want with the content
holder.mText.setText(getItem(position));
holder.mText.setTextColor(Color.BLUE);
return convertView;
}
private class Holder {
public TextView mText;
}
}
}