Android-AppSetting

Android-AppSetting.java

package mohammad.samandari.appwithsettings;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;

import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;

import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.preference.PreferenceManager;

import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate (Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick (View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });

        PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
        SharedPreferences sharedPref =
                PreferenceManager
                        .getDefaultSharedPreferences(this);
        Boolean switchPref = sharedPref.getBoolean
                (SettingsActivity.KEY_PREF_EXAMPLE_SWITCH, false);
        Toast.makeText(this, switchPref.toString(),
                Toast.LENGTH_SHORT).show();
    }

    @Override
    public boolean onCreateOptionsMenu (Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected (MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            Intent intent = new Intent(this, SettingsActivity.class);
            startActivity(intent);
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

preferences.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <SwitchPreferenceCompat
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:defaultValue="true"
        android:key="example_switch"
        android:summary="Turn this option on or off"
        android:title="Settings option"
        app:icon="@drawable/ic_launcher_foreground" />
    <EditTextPreference
        android:defaultValue="Mohammad Samandari"
        android:inputType="textCapWords"
        android:key="example_text"
        android:maxLines="1"
        android:selectAllOnFocus="true"
        android:singleLine="true"
        android:summary="Your Name"
        android:title="Display Name" />
    <ListPreference
        android:accessibilityLiveRegion="assertive"
        android:defaultValue="-1"
        android:entries="@array/pref_example_list_titles"
        android:entryValues="@array/pref_example_list_values"
        android:key="example_list"
        android:negativeButtonText="@null"
        android:positiveButtonText="@null"
        android:title="Add friends to order messages"
        android:visibility="invisible" />
</PreferenceScreen>

SettingsActivity.java

package mohammad.samandari.appwithsettings;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class SettingsActivity extends AppCompatActivity {
    public static final String
            KEY_PREF_EXAMPLE_SWITCH = "example_switch";

    @Override
    protected void onCreate (Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getSupportFragmentManager().beginTransaction()
                .replace(android.R.id.content, new SettingsFragment())
                .commit();
    }
}

SettingsFragment.java

package mohammad.samandari.appwithsettings;

import android.os.Bundle;

import androidx.fragment.app.Fragment;
import androidx.preference.PreferenceFragmentCompat;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

/**
 * A simple {@link Fragment} subclass.
 */
public class SettingsFragment extends PreferenceFragmentCompat {


    @Override
    public void onCreatePreferences (Bundle savedInstanceState, String rootKey) {
        setPreferencesFromResource(R.xml.preferences,rootKey);
    }
}