android - 大屏幕上的首选项 Activity 白边

Question

我正在尝试更改偏好列表背景颜色，该颜色适用于较小的设备，但会在平板电脑上留下难看的白边。在寻找解决方案时，我读到在较大的设备上，首选项 ListView 被放置在一个 fragment 中。

关于如何删除它的任何想法？我只需要弄清楚如何设置 parent 的背景颜色吗？

还不允许发布图片，所以这里是屏幕截图:http://i.imgur.com/gjjg5Je.png?1

AppPreferenceActivity.java:

 @override
 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getActionBar().setDisplayHomeAsUpEnabled(true);

    // ---load the preferences from an XML file---
    addPreferencesFromResource(R.xml.myapppreferences);

    int[] colour = getIntent().getExtras().getIntArray("mColour");
    getListView().setBackgroundColor(
            Color.rgb(colour[0], colour[1], colour[2]));

    // Set theme & colour
    setTheme(R.style.PreferencesTheme);
    getActionBar().setTitle("Preferences");
    setIcon();`

主题.xml:

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

<style name="PreferencesTheme">
    <item name="android:typeface">sans</item>
    <item name="android:textColorPrimary">#fff</item>
    <item name="android:textColorSecondary">#fff</item>


</style>

myapppreferences.xml

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

<PreferenceCategory android:title="Display Settings" >
    <ListPreference
        android:dialogTitle="Colour..."
        android:defaultValue="Red"
        android:entries="@array/colourEntries"
        android:entryValues="@array/colourValues"
        android:key="pref_colour"
        android:summary="Choose a default background colour..."
        android:title="App Background Colour" >
    </ListPreference>
</PreferenceCategory>

<PreferenceCategory android:title="Reminder Settings" >
    <ListPreference
        android:dialogTitle="Remind me..."
        android:defaultValue="The day before"
        android:entries="@array/dayRemindEntries"
        android:entryValues="@array/dayRemindValues"
        android:key="pref_days_before"
        android:summary="Remind me..."
        android:title="Default reminder..." >
    </ListPreference>
</PreferenceCategory>

Answer 1

addPreferencesFromResource 方法在 API 11 及更高版本中已弃用。尝试使用 PreferenceFragment 并像这样覆盖 onCreateView:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View v = super.onCreateView(inflater, container, savedInstanceState);
    if(v != null) {
        ListView lv = (ListView) v.findViewById(android.R.id.list);
        lv.setPadding(10, 10, 10, 10);
    }
    return v;
}

此代码取自此响应: Android: How to maximize PreferenceFragment width (or get rid of margin)?