flutter camera problem diff

cameraproblem.diff

diff --git a/lib/main.dart b/lib/main.dart
index 0d5a596..3cda549 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,7 +1,10 @@
 import 'dart:async';
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:camera/camera.dart';
 import 'package:flutter/services.dart';
+import 'package:path_provider/path_provider.dart';
 
 List<CameraDescription> cameras;
 
@@ -21,11 +24,22 @@ class CameraApp extends StatefulWidget {
 }
 
 class _CameraAppState extends State<CameraApp> {
+  String _appDirectoryPath;
   CameraController controller;
 
+  Future<void> _requestAppDirectory() async {
+    // `path_provider` doesn't have getCameraRollDirectory()
+    Directory _appDirectory = await getApplicationDocumentsDirectory();
+
+    setState(() {
+      _appDirectoryPath = _appDirectory.path;
+    });
+  }
+
   @override
   void initState() {
     super.initState();
+    _requestAppDirectory();
     controller = new CameraController(cameras[0], ResolutionPreset.medium);
     controller.initialize().then((_) {
       if (!mounted) {
@@ -63,7 +77,9 @@ class _CameraAppState extends State<CameraApp> {
           tooltip: 'Increment',
           child: new Icon(Icons.camera),
           onPressed: () {
+            print('capturing');
+            print(_appDirectoryPath);
+            controller.capture(_appDirectoryPath);
           },
         ),
         floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,