Question

我想更改listView的一个项目的颜色背景，我目前有这个：

final ArrayAdapter<String> adapter = new ArrayAdapter<String>(parentActivity, android.R.layout.simple_list_item_1, accountList) {


      @Override
     public View getView(int position, View convertView, ViewGroup parent) {
         View view = super.getView(position, convertView, parent);
              ViewGroup.LayoutParams params = view.getLayoutParams();
              view.setLayoutParams(params);

              TextView textview = (TextView) view;
              textview.setTextSize(15);
              textview.setGravity(Gravity.CENTER);
              textview.setTextColor(Color.WHITE);

              int p = 0;

               for (Accounts c : Register.getAccounts()) {
               if (c.getNumber().equals(accountNumber) && (position == p)){

                  view.setBackgroundResource(R.color.colorPrimaryDark);

               }
          p++;
        }

   return textview;
   }
};

listView.setAdapter(adapter);

说明：我有一个用户拥有的关联帐户列表，我需要更改当时活动帐户的背景颜色，问题是：

view.setBackgroundResource(R.color.colorPrimaryDark);

设置listView的多个元素，谢谢。

Answer 1

i changed your code try this

        final ArrayAdapter<String> adapter = new ArrayAdapter<String>(parentActivity, android.R.layout.simple_list_item_1, accountList) {


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view = super.getView(position, convertView, parent);
            ViewGroup.LayoutParams params = view.getLayoutParams();
            view.setLayoutParams(params);

            TextView textview = (TextView) view;
            textview.setTextSize(15);
            textview.setGravity(Gravity.CENTER);
            textview.setTextColor(Color.WHITE);


                if (Register.getAccounts().get(position).getNumber().equals(accountNumber) ){

                    textview.setBackgroundResource(R.color.colorPrimaryDark);

                }else textview.setBackgroundResource(0);



            return textview;
        }
    };

    listView.setAdapter(adapter);

Answer 2

尝试省略p及其条件。

final ArrayAdapter<String> adapter = new ArrayAdapter<String>(parentActivity, android.R.layout.simple_list_item_1, accountList) {


  @Override
 public View getView(int position, View convertView, ViewGroup parent) {
     View view = super.getView(position, convertView, parent);
          ViewGroup.LayoutParams params = view.getLayoutParams();
          view.setLayoutParams(params);

          TextView textview = (TextView) view;
          textview.setTextSize(15);
          textview.setGravity(Gravity.CENTER);
          textview.setTextColor(Color.WHITE);

           if (Register.getAccounts().get(position).equals(accountNumber)){

              view.setBackgroundResource(R.color.colorPrimaryDark);

           }

   return textview;
   }
};

listView.setAdapter(adapter);

Answer 3

您需要添加＆＃34;否则＆＃34;在你的条件分支

if (c.getNumber().equals(accountNumber)){
   view.setBackgroundResource(R.color.colorPrimaryDark);
} else {
  view.setBackgroundResource(R.color.white);
}

如何更改listView的一项的颜色背景

3 个答案: