Add selection, scanning, connect button

1 files changed, 38 insertions, 10 deletions

diff --git a/lib/main.dart b/lib/main.dart
index fb4eaff..6ccf64d 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,3 +1,7 @@
+import 'dart:convert';
+
+import 'dart:io' show Platform;
+
 import 'package:flutter/material.dart';
 
 import 'package:permission_handler/permission_handler.dart';
@@ -62,24 +66,36 @@ class MyHomePage extends StatefulWidget {
 class _MyHomePageState extends State<MyHomePage> {
   final List<ScanResult> scanResults = [];
   bool isScanning = false;
-  int selectedResult = -1;
+  static const int noItemSelected = -1;
+  int selectedResult = noItemSelected;
+
+  void _doConnect() {}
 
   void _doScan() async {
     setState(() {
       scanResults.clear();
       isScanning = true;
-      selectedResult = -1;
+      selectedResult = noItemSelected;
     });
     var subscription = FlutterBluePlus.onScanResults.listen(
       onScanResult,
       onError: (e) => logger.e(e),
     );
 
-    await FlutterBluePlus.startScan(
-      //withServices:[Guid("180D")], // match any of the specified services
-      //withNames:["Bluno"], // *or* any of the specified names
-      timeout: Duration(seconds: 10),
-    );
+    // Ehhhh... can't have both
+    if (Platform.isAndroid) {
+      await FlutterBluePlus.startScan(
+        withKeywords: ["NimBLE"],
+        timeout: Duration(seconds: 5),
+      );
+    } else {
+      // for Linux, which can't do advNames
+      // msd doesn't work, either????
+      await FlutterBluePlus.startScan(
+        withMsd: [MsdFilter(0xffff, data: ascii.encode("uvok"))],
+        timeout: Duration(seconds: 5),
+      );
+    }
 
     // wait for scanning to stop
     await FlutterBluePlus.isScanning.where((val) => val == false).first;
@@ -164,9 +180,21 @@ class _MyHomePageState extends State<MyHomePage> {
           // wireframe for each widget.
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
-            ElevatedButton(
-              onPressed: isScanning ? null : _doScan,
-              child: isScanning ? Text("Scanning...") : Text("Start scan"),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              spacing: 15.0,
+              children: [
+                ElevatedButton(
+                  onPressed: isScanning ? null : _doScan,
+                  child: isScanning ? Text("Scanning...") : Text("Start scan"),
+                ),
+                ElevatedButton(
+                  onPressed: (selectedResult == noItemSelected || isScanning)
+                      ? null
+                      : _doConnect,
+                  child: Text("Connect"),
+                ),
+              ],
             ),
             Expanded(
               child: ListView.separated(