add action bar with back button in preference activity

Question

Here is my preference activity:

package com.example.hms.test;

import android.os.Bundle;
import android.preference.PreferenceActivity;

public class PrefsActivity extends PreferenceActivity {

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.prefs);
    }

}

here I want to show an actionbar with name settings and a back button to home

Answer 1

You should do couple of things:

1. Add the following to your onCreate of PreferenceActivity:

   getSupportActionBar().setDisplayShowHomeEnabled(true);
   getSupportActionBar().setDisplayHomeAsUpEnabled(true);
   

2. Override onOptionsItemSelected in PreferenceActivity:

   @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId())
        {
            case android.R.id.home:
                NavUtils.navigateUpFromSameTask(this);
                return true;
        }
        return super.onOptionsItemSelected(item);
    }
   

3. change the <activity> tag in manifest for your PreferenceActivity to look something like this:

   <activity
     android:name=".PrefsActivity"
     android:label="@string/title_activity_settings"
     android:parentActivityName=".MainActivity">
     <meta-data
       android:name="android.support.PARENT_ACTIVITY"
       android:value="com.example.android.MainActivity" />
   </activity>
   

4. Finally put android:launchMode="singleTop" in your MainActivity <activity> tag in manifest:

   <activity
     android:name=".MainActivity"
     android:label="@string/app_name"
     android:launchMode="singleTop"
     android:theme="@style/AppTheme.NoActionBar">
     <intent-filter>
       <action android:name="android.intent.action.MAIN" />
   
       <category android:name="android.intent.category.LAUNCHER" />
     </intent-filter>
   </activity>