Question

您好我有一个列表视图，点击后我想要显示所选列表项的背景图像，如果选择更改，则更改背景。我一直试图实现这一点，但未能这样做。请帮助我，非常感激

请找到我正在使用的代码

 @Override
    public View getView(final int position, View convertView,
            ViewGroup parent) {
        View view = convertView;
        final int getstartedItemPos = position;
        Resources res = getResources();

        if (convertView == null) {
            view = LayoutInflater.from(parent.getContext()).inflate(
                    R.layout.getting_starteditem, null);
        }
        synchronized (view) {
            TextView textTopic = (TextView) view
                    .findViewById(R.id.indexItems);
            textTopic.setText(getStartedItems[getstartedItemPos]);
            textTopic.setTypeface(tf);
            view.setBackgroundColor(Color.TRANSPARENT);

        }
        return view;
    }

};

private OnItemClickListener getStartedListItem = new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int position,
            long arg3) {
        // TODO Auto-generated method stub
         Intent myintent = new  Intent(getApplicationContext(),GetStartedWebview.class);
         myintent.putExtra("SelectedItem", getStartedItems[position]);
         startActivity(myintent);
    }
};

Answer 1

pinkcandy使用此View lastView;

public void onItemClick(AdapterView<?> arg0, View v, int pos, long arg3) 
    {


        if(lastView==null){
            v.setBackgroundColor(Color.BLACK);

            lastView=v;
            }
            else{
            lastView.setBackgroundColor(Color.WHITE); 
             v.setBackgroundColor(Color.BLACK);

            lastView=v;
            }

    }

它可以帮到你

Answer 2

在listview中试试这个： -

android:listSelector="@color/orange"

Answer 3

如果您已将OnItemClickListener附加到ListView，我无法从您的代码中看到，如果您没有，则应该这样做。在onItemClick中，您可以获取点击的视图（arg1）并在其上使用.setBackgroundResource(int resID)来更改其背景

编辑：您可以使用包含当前列表项的本地变量来显示背景，所以请执行以下操作：

private View pressedView = null; 

private OnItemClickListener getStartedListItem = new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int position,
            long arg3) {
        // TODO Auto-generated method stub
         Intent myintent = new  Intent(getApplicationContext(),GetStartedWebview.class);
         myintent.putExtra("SelectedItem", getStartedItems[position]);
         startActivity(myintent);

         if(pressedView != null) {
             pressedView.setBackgroundResource(..); // reset background of old item
             pressedView = arg1; // Point pressedView to new item
         }
    }
};

Answer 4

我不确定，但如果我理解你的话，你只需要设置一次视图的背景，但它应该是 selector drawable，如下所示：

<?xml version="1.0" encoding="utf-8"?>
<selector
    xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:state_pressed="true"
        android:drawable="*background for pressed state*" />
    <item
        android:state_focused="true"
        android:drawable="*background for focused state*" />
    <item
        android:drawable="*default background*" />

</selector>

如何在单击时设置listview项目的背景，并在其他点击上动态更改

4 个答案: