Getting listPreference selected item. Android
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28-06-2021 - |
Question
I am running a service. In that I want to read preferences for the application that started it. Although I am able to read other preferences. I am not able to read selected item in the list preference. Please help. A code or relevant link is appreciated. Thanks in advance.
Solution
Create a XML file arrays.xml in the folder /res/values/
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="listDisplayWord">
<item>Option 1</item>
<item>Option 2</item>
<item>Option 3</item>
</string-array>
<string-array name="listReturnValue">
<item>1 is selected</item>
<item>2 is selected</item>
<item>3 is selected</item>
</string-array>
</resources>
Create a preferences.xml in the folder /res/xml/
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<ListPreference
android:title="List Preference"
android:summary="Select the option of the list"
android:key="listPref"
android:entries="@array/listDisplayWord"
android:entryValues="@array/listReturnValue" />
</PreferenceScreen>
Create SetPreferences.java
package com.exercise.AndroidListPreference;
import com.exercise.AndroidListPreference.R;
import android.os.Bundle;
import android.preference.PreferenceActivity;
public class SetPreferences extends PreferenceActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
}
}
Main code
package com.exercise.AndroidListPreference;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class AndroidListPreference extends Activity {
TextView myListPref;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myListPref = (TextView)findViewById(R.id.list_pref);
Button buttonSetPreference = (Button)findViewById(R.id.setpreference);
buttonSetPreference.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(AndroidListPreference.this, SetPreferences.class));
}});
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Toast.makeText(this, "onResume", Toast.LENGTH_LONG).show();
SharedPreferences myPreference=PreferenceManager.getDefaultSharedPreferences(this);
String myListPreference = myPreference.getString("listPref", "default choice");
myListPref.setText(myListPreference);
}
}
Also have to modify AndroidManifest.xml to include SetPreferences.java
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.exercise.AndroidListPreference"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".AndroidListPreference"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SetPreferences" />
</application>
<uses-sdk android:minSdkVersion="4" />
</manifest>
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