ask location permission (fixes #43, #45, #48, #51)

android/app/build.gradle

@@ -26,7 +26,7 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -36,7 +36,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "io.treehouses.remoteii"
         minSdkVersion 19
-        targetSdkVersion 30
+        targetSdkVersion 31
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }

android/build.gradle

@@ -26,4 +26,4 @@ subprojects {
 
 task clean(type: Delete) {
     delete rootProject.buildDir
-}
+}

lib/common/bloc/bluetooth_cubit.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 
 import 'package:bloc/bloc.dart';
 import 'package:flutter_blue/flutter_blue.dart';
+import 'package:permission_handler/permission_handler.dart';
 import 'package:treehousesble/app/app.dart';
 import 'package:treehousesble/common/bloc/bluetooth_state.dart';
 import 'package:treehousesble/common/constants/app_constants.dart';
@@ -18,10 +19,15 @@ class BluetoothCubit extends Cubit<DataState> {
 
   appStart() async {
     final bool firstTimeAppOpen = await SharedPref.getFirstTimeAppOpen();
-    if (firstTimeAppOpen) {
-      emit(FirstTimeAppOpen());
-    } else {
-      emit(NotFirstTimeAppOpen());
+    Map<Permission, PermissionStatus> statuses = await [Permission.location, Permission.bluetooth,].request();
+    if(statuses[Permission.location] == PermissionStatus.granted){
+      if (firstTimeAppOpen) {
+        emit(FirstTimeAppOpen());
+      } else {
+        emit(NotFirstTimeAppOpen());
+      }
+    } else{
+      emit(PermissionsNotGranted());
     }
   }
   List<int> _sendCommand(String command) {

lib/common/bloc/bluetooth_state.dart

@@ -15,12 +15,15 @@ class FirstTimeAppOpen extends DataState {
   List<Object> get props => [];
 }
 
-
 class NotFirstTimeAppOpen extends DataState {
   @override
   List<Object> get props => [];
 }
 
+class PermissionsNotGranted extends DataState {
+  @override
+  List<Object> get props => [];
+}
 
 class StateIniital extends DataState {}
 

lib/feature/onboard/ui/screen/landing_page.dart

@@ -2,7 +2,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:treehousesble/common/bloc/bluetooth_cubit.dart';
 import 'package:treehousesble/common/bloc/bluetooth_state.dart';
-import 'package:treehousesble/feature/dashboard/screen/dashboard_page.dart';
 import 'package:treehousesble/feature/dashboard/screen/search_rpi_screen.dart';
 
 import 'onboard_page.dart';

pubspec.yaml

@@ -24,6 +24,7 @@ dependencies:
   flutter:
     sdk: flutter
   flutter_blue: ^0.8.0
+  permission_handler: ^8.1.6
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.