Creating multi page preferences

[Nabeel Rajabali]

Hello. I'm currently following this tutorial for trying to create a settings page using the preference library that will lead to another preference screen when a preference is selected. Basically I want my settings page to lead to another advanced settings page when a preference is selected.

What I currently have done is my settings fragment, my settings activity, the layout for my preferences and the layout for my settings activity.

activity_settings.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".SettingsActivity">


    <!--frame layout for displaying
        our preference fragment-->
    <FrameLayout
        android:id="@+id/idFrameLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

SettingsActivity.java

package com.example.navapp;

import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.preference.PreferenceManager;
import android.os.Bundle;


import android.os.Bundle;
import androidx.preference.Preference;
import android.preference.PreferenceFragment;
import android.util.Log;

import androidx.appcompat.app.AppCompatActivity;
import androidx.preference.PreferenceFragmentCompat;

public class SettingsActivity extends AppCompatActivity implements
        PreferenceFragmentCompat.OnPreferenceStartFragmentCallback {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_settings);

        // below line is to change
        // the title of our action bar.
        getSupportActionBar().setTitle("Settings");
        // below line is used to check if
        // frame layout is empty or not.
        if (findViewById(R.id.idFrameLayout) != null) {
            if (savedInstanceState != null) {
                return;
            }
            // below line is to inflate our fragment.
            getFragmentManager().beginTransaction().add(R.id.idFrameLayout, new SettingsFragment()).commit();
            PreferenceManager.

        }
    }

    @Override
    public boolean onPreferenceStartFragment(PreferenceFragmentCompat caller, Preference pref) {
        final Bundle args = pref.getExtras();
        final Fragment fragment = this.getSupportFragmentManager().getFragmentFactory().instantiate(
                this.getClassLoader(),
        fragment.setArguments(args);
        fragment.setTargetFragment(caller, 0);

        int setupSettingsFragment = getFragmentManager().findFragmentByTag("FeedbackFragment").getId();

        this.getSupportFragmentManager().beginTransaction()
                .replace(setupSettingsFragment, fragment)
                .addToBackStack(null)
                .commit();

        return true;
    }


}

preferences.xml

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


    <SwitchPreference
        android:key="switch"
        android:summaryOff="Switch off"
        android:summaryOn="Switch on"
        android:title="Switch Preference"
        android:fragment="com.example.navapp.FeedbackFragment"/>

    <Preference
        android:key="feedback"
        android:title="Send feedback"
        android:summary="Report technical issues or suggest new features"/>
        android:fragment="com.example.navapp.FeedbackFragment"/>


</PreferenceScreen>

SettingsFragment.java

package com.example.navapp;
import android.os.Bundle;
import android.preference.PreferenceFragment;

import androidx.annotation.Nullable;

public class SettingsFragment extends PreferenceFragment {

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // below line is used to add preference
        // fragment from our xml folder.
        addPreferencesFromResource(R.xml.preferences);
    }
}

feedback.xml

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

    <Preference
        android:key="feedback"
        android:title="Send feedback to devs"
        android:summary="Report technical issues or suggest new features"/>

</PreferenceScreen>

FeedbackFragment.java

package com.example.navapp;
import android.os.Bundle;
import android.preference.PreferenceFragment;

import androidx.annotation.Nullable;

public class FeedbackFragment extends PreferenceFragment {

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // below line is used to add preference
        // fragment from our xml folder.
        addPreferencesFromResource(R.xml.feedback);
    }
}

I'm trying to use the onPreferenceStartFragment method to replace the layout with my new fragment. However, I'm currently struggling with figuring out how to attach a preference to this listener and how this code works.

This is my first post in this forum so any feedback on how I can improve my posts would also be great.