store button state in SharedPreferences

3 files changed, 23 insertions, 1 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
+    }
 }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 30b029b..9a72a48 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -81,12 +81,12 @@
 				android:id="@+id/db_switch"
 				android:layout_width="wrap_content"
 				android:layout_height="wrap_content"
+				android:onClick="switch_handler"
 				android:rotation="-29"
 				android:rotationX="26"
 				android:rotationY="26"
 				android:scaleX="3"
 				android:scaleY="3"
-				android:text="aan uit"
 				app:layout_constraintBottom_toBottomOf="parent"
 				app:layout_constraintEnd_toEndOf="parent"
 				app:layout_constraintStart_toStartOf="parent"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 35af133..85c9c51 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,4 +1,6 @@
 <resources>
 	<string name="app_name">bingo3</string>
+	<string name="app_id">com.lonkaars.bingo3</string>
+	<string name="pref_db_btn">com.lonkaars.bingo3.db_button</string>
 	<string name="title_activity_orientation_demo">orientation_demo</string>
 </resources>
\ No newline at end of file