store button state in SharedPreferences

1 files changed, 20 insertions, 0 deletions

diff --git a/app/src/main/java/com/lonkaars/bingo3/MainActivity.java b/app/src/main/java/com/lonkaars/bingo3/MainActivity.java
index 6440c3c..55d2424 100644
--- a/app/src/main/java/com/lonkaars/bingo3/MainActivity.java
+++ b/app/src/main/java/com/lonkaars/bingo3/MainActivity.java
@@ -2,15 +2,25 @@ 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) {
@@ -22,4 +32,14 @@ public class MainActivity extends AppCompatActivity {
         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
+    }
 }