如何更改 ListFragment 中某些行的颜色？

Posted 2023-05-07

【中文标题】如何更改 ListFragment 中某些行的颜色？

【英文标题】：How to change color of certain row inside ListFragment?

【发布时间】：2014-07-06 05:39:53

【问题描述】：

我有一个 ListFragment，我用这样的数据填充：

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity().getApplicationContext(), 
            android.R.layout.simple_list_item_1, mNames);

对于 mNames 中的某些名称，我希望文本具有不同的颜色。我怎样才能做到这一点？

我试过这个来获取子视图的计数，但它返回 0：

public void onActivityCreated(Bundle savedInstanceState) 
    ListView listView = getListView();
    int count = listView.getChildCount();
    super.onActivityCreated(savedInstanceState);
    Log.w("COUNT", "" + count);

我还尝试了在 ArrayAdapter 中覆盖 getView() 的变体，但没有成功。

【参考方案1】：

您需要像这样创建自己的适配器类：

public class MyListAdapter extends BaseAdapter 

    LayoutInflater inflater;
    List<String> items;


    public MyGridAdapter(Context context, List<String> items) 
        this.items = items;
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    


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


    @Override
    public Object getItem(int position) 
        return items.get(position);
    


    @Override
    public long getItemId(int position) 
        return position;
    


    @Override
    public View getView(int position, View convertView, ViewGroup parent) 

        if (convertView == null) 
            convertView = inflater.inflate(android.R.layout.simple_list_item_1, null);
        

        if (items.get(position).equals("James"))
            // Do what you want with it
        

        return convertView;
    

【参考方案2】：

使用 ArrayAdapter

更改原始文本颜色

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getApplicationContext(), 
android.R.layout.simple_list_item_1, myList) 
@Override
public View getView(int position, View convertView, ViewGroup parent) 
View view = super.getView(position, convertView, parent);
TextView text = (TextView) view.findViewById(android.R.id.text1);
//flag is a boolean for selected raws
if(flag== True)
  text.setTextColor(Color.BLACK);
   
return view;

;

使用 SimpleAdapter

更改原始颜色

public class MySimpleAdapter extends SimpleAdapter 

public MySimpleAdapter(Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to) 
super(context, data, resource, from, to);


@Override
public View getView(int position, View convertView, ViewGroup parent) 
View view = super.getView(position, convertView, parent);
//change color is a method to pass selected raws for change color
if (changecolor(position)) ((TextView)view.findViewById(R.id.main_name)).setTextColor(0xffff0000);
return view;