Question

我需要使用备用颜色制作ListView。

代码：

public View getView(int position, View convertView, ViewGroup parent) {

  if(position %2==0)
  {
      view.setBackgroundColor(Color.BLUE);
  }
  return view;
}

但我不知道如何在我的适配器中使用它：

SimpleAdapter adapter = new SimpleAdapter(this, propositions, android.R.layout.simple_list_item_2,
    new String[] {"Date", "Trajet"},
    new int[] { android.R.id.text1, 
    android.R.id.text2});
lvTrajets.setAdapter(adapter);

有人可以帮我解决这个问题吗？

Answer 1

覆盖适配器的getView

SimpleAdapter adapter = new SimpleAdapter(this, propositions, android.R.layout.simple_list_item_2,
new String[] {"Date", "Trajet"},
new int[] { android.R.id.text1, 
android.R.id.text2})
    {
        @Override
        public View getView (int position, View convertView, ViewGroup parent)
        {
            View v = super.getView(position, convertView, parent);
             if(position %2==0)
             {
                  v.setBackgroundColor(Color.BLUE);
             }
             else
             {
                  v.setBackgroundColor(Color.WHITE);
             }

            return v;
        }


    };

Answer 2

这是我的获取视图我更改了一个图像背景你只需更改父逻辑的特定位置的布局颜色如果（位置％2 == 0）这里简单我只给你这个家伙的技巧而不是完整的代码

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

        View v = convertView;

        if (v == null) {
            v = mInflater.inflate(R.layout.devicesnameshow_item, null);
        }


        ImageView imgIcon = (ImageView) v.findViewById(R.id.deviceimage);

        Resources res = v.getResources();
        String mDrawableName = data[position].umt;
        int resID = res.getIdentifier(mDrawableName , "drawable", context.getPackageName());
        Drawable drawable = res.getDrawable(resID);
        imgIcon.setImageDrawable(drawable);




          if(position %2==0)
        {
            imgIcon.setBackgroundColor(Color.parseColor(colorcounter_array[colorcounter]));// u can give any color i just take it from my array 
        } else {
            imgIcon.setBackgroundColor(Color.parseColor(colorcounter_array[colorcounter]));// u can give any color i just take it from my array 
        }




        }
         return v;
    }

Answer 3

要显示ListView中的替代颜色，请按以下方式实施getView() Adapter方法

public View getView(int position, View convertView, ViewGroup parent) {

if(convertView==null){
//Initialize the convertView and all its view's
}
  if(position %2==0)
  {
      view.setBackgroundColor(Color.BLUE);
  }else{
      view.setBackgroundColor(Color.Red);
  }
  return view;
}

Answer 4

 call from your activity :
ListAdapteradapter = new ListAdapter(this, fillMaps, R.layout.listmain, from, to);

ListAdapter class:

public class ListAdapter  extends SimpleAdapter {

    public ListAdapter(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); 

        if (position % 2 == 1)
        {

             view.setBackgroundResource(R.color.blue); 


        } 
        else {
            view.setBackgroundResource(R.color.lavendar);
        }
        return view;  
        }



}

ListView替代颜色

4 个答案: