My PreferenceActivity
contains a nested PreferenceScreen
in another PreferenceScree开发者_StackOverflown
and I'm applying a theme to my PrefenceActivity
that changes the background color. However when I open the nested PreferenceScreen
I get a black background and I cannot see the options.
This happens with android 2.1 , but it does not happen with android 1.6. Any ideas on how this can be corrected?
I found a way to do it but it quite a hack.
This is my prefs.xml
<PreferenceCategory
android:title="@string/hello">
<CheckBoxPreference
key="pref_update_key"
android:title="@string/hello"
android:summaryOn="@string/hello"
android:summaryOff="@string/hello"
android:persistent="true"
android:defaultValue="false" />
</PreferenceCategory>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:key="pref_second_preferencescreen_key" android:title="@string/hello">
<CheckBoxPreference
key="pref_update_key"
android:title="@string/hello"
android:summaryOn="@string/hello"
android:summaryOff="@string/hello"
android:persistent="true"
android:defaultValue="false" />
</PreferenceScreen>
And this is my code for the class that extends PreferenceActivity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.layout.prefs);
getWindow().setBackgroundDrawableResource(R.drawable.background);
PreferenceScreen b = (PreferenceScreen) findPreference("pref_second_preferencescreen_key");
b.setOnPreferenceClickListener(new OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
PreferenceScreen a = (PreferenceScreen) preference;
a.getDialog().getWindow().setBackgroundDrawableResource(R.drawable.background);
return false;
}
});
}
What worked for me: Simply set a list style:
<style name="Theme.Preferences" parent="android:Theme.Light" >
<item name="android:listViewStyle">@style/lightListView</item>
</style>
<style name="lightListView">
<item name="android:background">#ffffff<item>
</style>
Workaround:
1) Prepare 2 PreferenceScreen xml's instead of sub PreferenceScreen using;
2) Add secondary PreferenceScreen Activity to AndroidManifest.xml:
<activity android:name="com.example.PreferenceActivity2"
android:label="Issue4611"
android:theme="@android:style/Theme.Light">
<intent-filter>
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
3) For show secondary PreferenceScreen use in your first PreferenceScreen:
<PreferenceScreen android:key="key1"
android:title="1 Item"
android:summary="">
<intent android:action="android.intent.action.VIEW"
android:targetPackage="com.example"
android:targetClass="com.example.PreferenceActivity2"/>
</PreferenceScreen>
Example
Macarse's answer is perfect, I was searching for classic white background so I changed this line in his answer:
a.getDialog().getWindow().setBackgroundDrawableResource(R.drawable.background);
to:
a.getDialog().getWindow().setBackgroundDrawableResource(android.R.color.white);
and it works nicely.
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