change background color of Preference

user_357349 0
Viewed 79181

I have a PreferenceCategory, xml file and I have defined all preferences in it, I call this from class that extends PreferenceActivity. I am unable to set the background of my settings screen, this screen is displayed with help of xml file shown below. Please see that I have already defined the android:background="#041A37", still the screen remains default color: black.

public class MyPreferenceActivity extends PreferenceActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        Context mContext=super.getBaseContext();
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.layout.preference);
        //v.setBackgroundColor(Color.rgb(4, 26, 55));
    }
}

preference.xml is 

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="#041A37" >

    <PreferenceCategory>
        <com.dropcall.SeekBarPreference
            android:background="#041A37"
            android:defaultValue="5"
            android:key="@string/Interference_Delay"
            android:progressDrawable="@drawable/seekbardrawable"
            android:title="Seconds Delay until intereference" />

        <com.dropcall.SeekBarPreference2
            android:defaultValue="30"
            android:key="@string/Drop_Delay"
            android:progressDrawable="@drawable/seekbardrawable"
            android:title="Seconds delay until drop" />

        <CheckBoxPreference
            android:background="@drawable/state_normal"
            android:defaultValue="true"
            android:key="@string/Drop_Option"
            android:title="Close after call drop" />
        <CheckBoxPreference
            android:background="@drawable/state_normal"
            android:defaultValue="true"
            android:key="@string/Timer_Option"
            android:title="Start timers on launch" />
    </PreferenceCategory>

</PreferenceScreen>

Although I have set android:background="#041A37" in every file, the background doesn't turn into navy blue, or any other color for that matter. It remains default color, black. How to change the background color. Please let me know any pointers / hints , if you had faced same issue let me know what changes you made to set the background color.

android-emulator android
9 Answers

I faced with the same requirement (Androidx Preference Screen background for settings fragment).

The below code has worked for me in a fragment. (in themes.xml). I assume that it is gonna work also for an activity.

<resources xmlns:tools="http://schemas.android.com/tools">
    <!-- Base application theme. -->
    <style name="Theme.MyApplication" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
        ...............
       <!-- Add below -->
        <item name="preferenceTheme">@style/preference</item>
    </style>
    
    <style name="preference" parent="Theme.AppCompat">
        <item name="android:background">@color/purple_200</item>
    </style>
</resources>
user_82609980

Please specify a linear layout with a textview attached and specify background color and attach this xml to preferencecategory using the layout property.

<PreferenceCategory
     android:layout="@layout/preftitle"
 >

Where preftitle is an xml which has a linear layout and text view attached.

user_13220110

I am using the PreferenceFragmentCompat, the below solution worked for me.

SettingsScreen

import android.os.Bundle
import android.util.TypedValue
import android.view.View
import androidx.annotation.ColorInt
import androidx.preference.ListPreference
import androidx.preference.Preference
import androidx.preference.PreferenceFragmentCompat
import com.almarai.easypick.R


class SettingsScreen : PreferenceFragmentCompat(), 
Preference.OnPreferenceChangeListener {

override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {

//Providing the XML file for the view to be created
setPreferencesFromResource(R.xml.app_settings_preferences, rootKey)
}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {

//Get the Theme specific color
val typedValue = TypedValue()
val theme = requireContext().theme

/*R.attr.colorBackgroundScreenBody is my own attr from attrs.xml file, 
you can directly use R.color.red - Or any color from your colors.xml 
file if you do not have multi-theme app.*/
theme.resolveAttribute(R.attr.colorBackgroundScreenBody, typedValue, true)
@ColorInt val color = typedValue.data

view.setBackgroundColor(color)

super.onViewCreated(view, savedInstanceState)
}
}
user_119285330
Related