我试图设置ListView的文字颜色为黑色。由于我使用的是白色背景。

i am trying to set the ListView TextColor to Black. Since i am using a White Background.

下面是我的MailActivity

Here is my MailActivity

public class MailActivity extends ListActivity {

    String[] listItems = { "Compose", "Inbox", "Drafts", "Sent" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mails);
        setListAdapter(new ArrayAdapter(this,
                android.R.layout.simple_list_item_1, listItems));

    }
}

和我的XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:background="#FFFFFF">
    <ListView android:id="@android:id/list" android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>
    <TextView android:id="@android:id/empty" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="Empty set" android:textColor="#000000" />
</LinearLayout>

我得到的背景为白色。但我不知道在哪里设置前景色为黑色。试图在XML和看起来像它没有帮助

i get the background as white. but am not sure where to set foreground to black. tried in the xml and looks like its not helping

推荐答案

确定这里有一些事情，你应该是清楚的：

Ok here are some thing that you should be clear about:

我试着用code示例说明这一点：

I try to explain this with a code sample :

*的的让我们开始与ListItems的布局 * 的：它保存在你的Andr​​oid项目的 RES /布局文件夹具有发言权的 list_black_text.xml

*Lets start with ListItems layout *: save it in your res/layout folder of you android project with say list_black_text.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Definig a container for you List Item-->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:gravity="center_vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<!-- Defining where should text be placed. You set you text color here-->
<TextView
android:id="@+id/list_content"
android:textColor="#000000"
android:gravity="center"
android:text="sample"
android:layout_margin="4dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>

</LinearLayout>

好了的TextView 是precise一个简单的布局。你必须有一个分配给TextView的一个ID，才能使用它。

Well a simple layout with a TextView to be precise. You must have an id assigned to TextView, in order to use it.

现在来到你的屏幕/活动/首席布局，我说你要定义背景，你的屏幕与安卓背景属性。我看你已经定义了一个文本视图有作为，我怀疑你正试图确定there.Which不是在所有需要的内容/列表项。

Now coming to you screen/activity/chief layout, as I said you are defining background to you screen with android:background attribute. I see you have defined a text view there as well and I suspect you are trying to define content/list item there.Which is not at all needed.

继承人你编辑的布局，

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="#FFFFFF">
<ListView android:id="@android:id/list" android:layout_width="fill_parent"
    android:layout_height="wrap_content"/>
<!-- REMOVED TEXT VIEW, AND KEEPING BACKGROUND WHITE -->
</LinearLayout>

和最后最重要的是设置您的适配器。

And lastly most important is to set your adapter.

setListAdapter(new ArrayAdapter<String>(
            this,R.layout.list_black_text,R.id.list_content, listItems));

您必须注意它们传递给适配器 R.layout.list_black_text 和 R.id.list_content 是TextView的ID，我们宣布。我也改变了ArrayAdapter为String类型，因为其通用的。

    ArrayAdapter<String> adapter=new ArrayAdapter<String>(
            this,android.R.layout.simple_list_item_1, listItems){

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

            TextView textView=(TextView) view.findViewById(android.R.id.text1);

            /*YOUR CHOICE OF COLOR*/
            textView.setTextColor(Color.BLUE);

            return view;
        }
    };
        /*SET THE ADAPTER TO LISTVIEW*/
        setListAdapter(adapter);