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 PrefsAct         


        

Answer 1

okay. now you still trouble then i have unique solution for you which work 100% with just minor changes.

so first of all create one style for only settings activity.

here is my toolbar styles code.

and here is my stlyes.xml looks like

yes. you noticed i have create duplicate styles(appTheme and Toolbar_settings_style both are same styles attribute) for only settingsActivity. it is very important to create duplicate styles.

Now go to your settingsActivity and paste below code inside onCreate().

 getSupportActionBar().setDisplayHomeAsUpEnabled(true);

After placing above code now my SettingsActivity looks like

import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.preference.EditTextPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.preference.RingtonePreference;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.view.MenuItem;


import settingspreferences.AppCompatPreferenceActivity;

public class User_Settings extends AppCompatPreferenceActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        // load settings fragment
        getFragmentManager().beginTransaction().replace(android.R.id.content, new MainPreferenceFragment()).commit();
    }

    public static class MainPreferenceFragment extends PreferenceFragment {
        @Override
        public void onCreate(final Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.settings);

            // gallery EditText change listener
            bindPreferenceSummaryToValue(findPreference(getString(R.string.key_gallery_name)));

            // notification preference change listener

        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            if (item.getItemId() == android.R.id.home) {
             //   onBackPressed();
            }
            return super.onOptionsItemSelected(item);
        }

        private static void bindPreferenceSummaryToValue(Preference preference) {
            preference.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);

            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,
                    PreferenceManager
                            .getDefaultSharedPreferences(preference.getContext())
                            .getString(preference.getKey(), ""));
        }

        /**
         * A preference value change listener that updates the preference's summary
         * to reflect its new value.
         */
        private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
            @Override
            public boolean onPreferenceChange(Preference preference, Object newValue) {
                String stringValue = newValue.toString();

                if (preference instanceof ListPreference) {
                    // For list preferences, look up the correct display value in
                    // the preference's 'entries' list.
                    ListPreference listPreference = (ListPreference) preference;
                    int index = listPreference.findIndexOfValue(stringValue);

                    // Set the summary to reflect the new value.
                    preference.setSummary(
                            index >= 0
                                    ? listPreference.getEntries()[index]
                                    : null);

                } else if (preference instanceof RingtonePreference) {
                    // For ringtone preferences, look up the correct display value
                    // using RingtoneManager.
                    if (TextUtils.isEmpty(stringValue)) {
                        // Empty values correspond to 'silent' (no ringtone).
                        preference.setSummary(R.string.pref_ringtone_silent);

                    } else {
                        Ringtone ringtone = RingtoneManager.getRingtone(
                                preference.getContext(), Uri.parse(stringValue));

                        if (ringtone == null) {
                            // Clear the summary if there was a lookup error.
                          //  preference.setSummary(R.string.summary_choose_ringtone);
                        } else {
                            // Set the summary to reflect the new ringtone display
                            // name.
                            String name = ringtone.getTitle(preference.getContext());
                            preference.setSummary(name);
                        }
                    }

                } else if (preference instanceof EditTextPreference) {
                    if (preference.getKey().equals("key_gallery_name")) {
                        // update the changed gallery name to summary filed
                        preference.setSummary(stringValue);
                    }
                } else {
                    preference.setSummary(stringValue);
                }
                return true;
            }
        };
    }

}

Now let's come to real important part. go to manifest.xml file and find your settingsActivity and paste below code.

so here is my AndroidManifest.xml looks like

This is all you need to shows Toolbar on settingsActivity.