如何改变ListView的项目颜色焦点和点击 [英] How to change color of ListView items on focus and on click

问题描述

我有一个列表查看我的应用程序（这是XML布局）：

i have a list View in my app (this is the xml layout):

   <?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
       android:id="@+id/arrayList"
       android:layout_width="fill_parent"
android:layout_height="fill_parent"
       android:textFilterEnabled="true"
       android:scrollbars="vertical"
       android:drawSelectorOnTop="true">
</ListView>

我的列表查看每个项目由两个TextView的：

Each item of my list View is composed of two TextView:

    <?xml version="1.0" encoding="utf-8"?>
<TableLayout android:layout_width="fill_parent"
       xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/row_container"
       android:padding="5px" android:layout_height="wrap_content"
       android:background="@color/white" android:shrinkColumns="0">
               <TableRow>
               <TextView android:layout_height="wrap_content"
                       android:layout_width="wrap_content" android:layout_below="@+id/
description"
                       android:id="@+id/description"
                       android:textColor="@color/black"
                       android:scrollHorizontally="true"
                       android:singleLine="true"></TextView>
       </TableRow>
       <TableRow>
               <TextView android:layout_width="wrap_content"
                       android:layout_height="wrap_content" android:id="@+id/result"
                       android:textColor="@color/grey"
                       android:maxLines="1"
                       android:scrollHorizontally="true"></TextView>
       </TableRow>

</TableLayout>

我是从一个ArrayAdapter填充我的ListView，以这种方式：

I'm populating my listView from an ArrayAdapter, in this way:

public class Matches extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);        
    //set layout

    setContentView(R.layout.list_layout);
  // obtain reference to listview
  ListView listView = (ListView) findViewById(R.id.arrayList);

  ArrayAdapter<Match> arrayAdapter = new ArrayAdapter<Match>(
        this, R.layout.custom_row, R.id.description, createItems()) {

     @Override
     public View getView (int position, View convertView, ViewGroup parent){
        Match item = getItem (position);
        LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View rowView = inflater.inflate(R.layout.custom_row, null);
        TextView description = (TextView)rowView.findViewById(R.id.description);
        TextView result = (TextView)rowView.findViewById(R.id.result);
        description.setText(item.description + "  Risultato: " + item.result );
        result.setText(item.date + "  " + item.hour);
        return rowView;
     }
  };

  listView.setAdapter(arrayAdapter);

我的目标是能够改变文字颜色，每当家长选择或pressed。

My goal is to be able to change the text color and the backgorund of these child views whenever the parent is selected or pressed.

我怎样才能做到这一点？

How can i do it?

推荐答案

在列表行的子视图只设置一个正常的状态下，应考虑选择每当父行被选中，所以你应该能够绘制/ color-你想改变，没有凌乱的Java code必要的视图列表。请参阅<一href="http://stackoverflow.com/questions/3506319/android-linearlayout-with-color-resource-what-am-i-doing-wrong">this SO帖子。

The child views in your list row should be considered selected whenever the parent row is selected, so you should be able to just set a normal state drawable/color-list on the views you want to change, no messy Java code necessary. See this SO post.

具体，你会设置文字颜色您textViews对XML资源像这样的：

Specifically, you'd set the textColor of your textViews to an XML resource like this one:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_focused="true" android:drawable="@color/black" /> <!-- focused -->
    <item android:state_focused="true" android:state_pressed="true" android:drawable="@color/black" /> <!-- focused and pressed-->
    <item android:state_pressed="true" android:drawable="@color/green" /> <!-- pressed -->
    <item android:drawable="@color/black" /> <!-- default -->
</selector> 

这篇关于如何改变ListView的项目颜色焦点和点击的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！