app/src/main/java/com/lonkaars/bingo3/MainActivity.java


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package com.lonkaars.bingo3;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Switch;

public class MainActivity extends AppCompatActivity {
    private SharedPreferences prefs;

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

        prefs = getSharedPreferences(getString(R.string.app_id), Context.MODE_PRIVATE);
        View sw = findViewById(R.id.db_switch);
        ((Switch) sw).setChecked(prefs.getBoolean(getString(R.string.pref_db_btn), false));
        switch_handler(sw);
    }

    public void navigate_orientation(View view) {
        Intent intent = new Intent(this, OrientationActivity.class);
        startActivity(intent);
    }

    public void navigate_weather(View view) {
        Intent intent = new Intent(this, WeatherActivity.class);
        startActivity(intent);
    }

    public void switch_handler(View view) {
        Switch sw = (Switch) view;
        boolean state = sw.isChecked();
        sw.setText(state ? "aan" : "uit");

        SharedPreferences.Editor db = prefs.edit();
        db.putBoolean(getString(R.string.pref_db_btn), state);
        db.apply(); // this one is asynchronous
    }
}