Merge pull request #4 from JamesCullum/master

Improved example by showing a full sample app

example/lib/main.dart

@@ -1,27 +1,101 @@
+import 'package:app_links/app_links.dart';
 import 'package:flutter/material.dart';
 
 ///////////////////////////////////////////////////////////////////////////////
-/// This example does nothing.
+/// Please make sure to follow the setup instructions below
 ///
 /// Please take a look at:
 /// - example/android/app/main/AndroidManifest.xml for Android.
 ///
 /// - example/ios/Runner/Runner.entitlements for Universal Link sample.
 /// - example/ios/Runner/Info.plist for Custom URL scheme sample.
+///
+/// You can launch an intent on an Android Emulator like this:
+///    adb shell am start -a android.intent.action.VIEW \
+//     -c android.intent.category.BROWSABLE \
+//     -d "http://example.com/book/hello-world"
 ///////////////////////////////////////////////////////////////////////////////
 
 void main() {
   runApp(MyApp());
 }
 
-class MyApp extends StatelessWidget {
+class MyApp extends StatefulWidget {
+  @override
+  _MyAppState createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  final _navigatorKey = GlobalKey<NavigatorState>();
+
+  @override
+  void initState() {
+    initDeepLinks();
+    super.initState();
+  }
+
+  void initDeepLinks() async {
+    final _appLinks = AppLinks(
+      onAppLink: (Uri uri) {
+        openAppLink(uri);
+      },
+    );
+
+    final lastAppLinkUri = await _appLinks.getLatestAppLink();
+    if (lastAppLinkUri != null) {
+      openAppLink(lastAppLinkUri);
+    }
+  }
+
+  void openAppLink(Uri uri) {
+    _navigatorKey.currentState
+        .pushNamed(uri.path, arguments: uri.queryParameters);
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(title: const Text('Plugin example app')),
-        body: Center(child: Text('Foo')),
-      ),
+      navigatorKey: _navigatorKey,
+      initialRoute: "/",
+      onGenerateRoute: (RouteSettings settings) {
+        Widget routeWidget = defaultScreen();
+
+        // Parse route to extract dynamic parameters
+        var uri = Uri.parse(settings.name);
+        var firstLevel =
+            uri.pathSegments.length > 0 ? uri.pathSegments.first : "";
+        switch(firstLevel) {
+          case "book":
+            if (uri.pathSegments.length > 1) {
+              // Navigated to /book/:id
+              routeWidget = customScreen(uri.pathSegments[1]);
+            } else {
+              // Navigated to /book without other parameters
+              routeWidget = customScreen("None");
+            }
+            break;
+        }
+
+        return MaterialPageRoute(
+          builder: (context) => routeWidget,
+          settings: settings,
+          fullscreenDialog: true,
+        );
+      },
+    );
+  }
+
+  Widget defaultScreen() {
+    return Scaffold(
+      appBar: AppBar(title: const Text('Default Screen')),
+      body: Center(child: const Text('Launch an intent to get to the second screen')),
+    );
+  }
+
+  Widget customScreen(String bookId) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('Second Screen')),
+      body: Center(child: Text('Opened with parameter: ' + bookId)),
     );
   }
 }