Get BT permissions as runtime permissions

Author: Henigan

android/hello_sdl_android/src/main/AndroidManifest.xml

@@ -3,8 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="com.sdl.hellosdlandroid">
 
-    <uses-permission android:name="android.permission.BLUETOOTH"
-        android:maxSdkVersion="30"/>
+    <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT"
         tools:targetApi="31"/>
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN"

android/hello_sdl_android/src/main/java/com/sdl/hellosdlandroid/MainActivity.java

@@ -1,19 +1,39 @@
 package com.sdl.hellosdlandroid;
 
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import static android.Manifest.permission.BLUETOOTH_CONNECT;
+import static android.Manifest.permission.BLUETOOTH_SCAN;
 
 public class MainActivity extends AppCompatActivity {
 
+    private static final int REQUEST_CODE = 200;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-        //If we are connected to a module we want to start our SdlService
+
+        if (android.os.Build.VERSION.SDK_INT >= 31) {
+            if (!checkPermission()) {
+                requestPermission();
+            }
+        } else {
+            //If we are connected to a module we want to start our SdlService
+            startSDLService();
+        }
+    }
+
+    private void startSDLService() {
         if (BuildConfig.TRANSPORT.equals("MULTI") || BuildConfig.TRANSPORT.equals("MULTI_HB")) {
             SdlReceiver.queryForConnectedService(this);
         } else if (BuildConfig.TRANSPORT.equals("TCP")) {
@@ -22,6 +42,34 @@ protected void onCreate(Bundle savedInstanceState) {
         }
     }
 
+    private boolean checkPermission() {
+        int result = ContextCompat.checkSelfPermission(getApplicationContext(), BLUETOOTH_CONNECT);
+        int result1 = ContextCompat.checkSelfPermission(getApplicationContext(), BLUETOOTH_SCAN);
+
+        return result == PackageManager.PERMISSION_GRANTED && result1 == PackageManager.PERMISSION_GRANTED;
+    }
+
+    private void requestPermission() {
+        ActivityCompat.requestPermissions(this, new String[]{BLUETOOTH_CONNECT, BLUETOOTH_SCAN}, REQUEST_CODE);
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        switch (requestCode) {
+            case REQUEST_CODE:
+                if (grantResults.length > 0) {
+
+                    boolean connectAccepted = grantResults[0] == PackageManager.PERMISSION_GRANTED;
+                    boolean scanAccepted = grantResults[1] == PackageManager.PERMISSION_GRANTED;
+
+                    if (connectAccepted && scanAccepted) {
+                        startSDLService();
+                    }
+                }
+                break;
+        }
+    }
+
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.