app can now turn on Bluetooth

ClimateGoApp/app/src/main/AndroidManifest.xml

@@ -2,6 +2,21 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="de.cdaut.climategoapp">
 
+    <!--Ensure Bluetooth is present on the device-->
+    <uses-feature android:name="android.hardware.bluetooth_le" android:required="true"/>
+
+    <!-- Request legacy Bluetooth permissions on older devices. -->
+    <uses-permission android:name="android.permission.BLUETOOTH"
+        android:maxSdkVersion="30" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"
+        android:maxSdkVersion="30" />
+
+    <!-- Scan for the sensor -->
+    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
+
+    <!-- Communicate with paired sensor -->
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/logo"
@@ -20,5 +35,4 @@
             </intent-filter>
         </activity>
     </application>
-
 </manifest>

ClimateGoApp/app/src/main/java/de/cdaut/climategoapp/DebugFragment.java

@@ -1,10 +1,18 @@
 package de.cdaut.climategoapp;
 
+import static android.app.Activity.RESULT_OK;
+
+import android.bluetooth.BluetoothAdapter;
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Toast;
 
+
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 
@@ -14,6 +22,22 @@ public class DebugFragment extends Fragment {
 
     private FragmentDebugBinding binding;
 
+    //this is the Launcher that will make the request to
+    // enable Bluetooth and handle the result callback
+    private final ActivityResultLauncher<Intent> mBtEnable = registerForActivityResult(
+            new ActivityResultContracts.StartActivityForResult(),
+            result -> {
+                if (result.getResultCode() != RESULT_OK) {
+                    //make an error toast if the user denys enabling bluetooth
+                    Toast.makeText(
+                            getActivity().getApplicationContext(),
+                            R.string.bt_required,
+                            Toast.LENGTH_LONG
+                    ).show();
+                }
+            }
+    );
+
     @Override
     public View onCreateView(
             @NonNull LayoutInflater inflater, ViewGroup container,
@@ -22,20 +46,15 @@ public class DebugFragment extends Fragment {
 
         binding = FragmentDebugBinding.inflate(inflater, container, false);
 
-        //TODO: Add proper Function when button is pressed here
         this.binding.buttonTest.setOnClickListener(view -> {
-            this.binding.debugView.setText("NewText");
+            //make request to enable bluetooth
+            mBtEnable.launch(new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE));
         });
 
         return binding.getRoot();
 
     }
 
-    @Override
-    public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
-    }
-
     @Override
     public void onDestroyView() {
         super.onDestroyView();

ClimateGoApp/app/src/main/java/de/cdaut/climategoapp/sensor/SensorDebugUtils.java

@@ -8,9 +8,11 @@ public final class SensorDebugUtils {
         throw new IllegalAccessError("Utility Class");
     }
 
-    public static List<String> readSensorData(){
+    public static List<String> readSensorData() {
         ArrayList<String> data = new ArrayList<>();
         data.add("Test");
+        data.add("a");
+        data.add("b");
         return data;
     }
 }

ClimateGoApp/app/src/main/res/layout/fragment_debug.xml

@@ -21,7 +21,6 @@
         android:id="@+id/debugView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="TextView"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"

ClimateGoApp/app/src/main/res/values/strings.xml

@@ -4,9 +4,10 @@
     <!-- Strings used for fragments for navigation -->
     <string name="first_fragment_label">Main Fragment</string>
     <string name="debug_fragment_label">Debug Fragment</string>
-    <string name="btn_test">Test</string>
+    <string name="btn_test">Enable Bluetooth</string>
     <string name="nav_main_label">Main</string>
     <string name="nav_debug_frag_label">Debug view</string>
     <string name="nav_open">Open</string>
     <string name="nav_close">Close</string>
+    <string name="bt_required">Bluetooth is required to connect to the sensor</string>
 </resources>