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This plugin allows Flutter apps to register and handle custom protocols (i.e. deep linking).

protocol_handler #

pub version

This plugin allows Flutter apps to register and handle custom protocols (i.e. deep linking).


English | 简体中文


Platform Support #

AndroidiOSLinuxmacOSWindows
✔️✔️✔️✔️

Screenshots #

https://user-images.githubusercontent.com/3889523/167283452-aff2535b-c322-45c7-949f-d1c80c2e4a60.mp4

Quick Start #

Installation #

Add this to your package's pubspec.yaml file:

dependencies:
  protocol_handler: ^0.1.3

Or

dependencies:
  protocol_handler:
    git:
      url: https://github.com/leanflutter/protocol_handler.git
      ref: main

Usage #

Android

Change the file android/app/src/main/AndroidManifest.xml as follows:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.leanflutter.plugins.protocol_handler_example">

    <application
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher"
        android:label="protocol_handler_example">
        <activity
            android:name=".MainActivity"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:exported="true"
            android:hardwareAccelerated="true"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:windowSoftInputMode="adjustResize">
            <!-- Specifies an Android theme to apply to this Activity as soon as
                 the Android process has started. This theme is visible to the user
                 while the Flutter UI initializes. After that, this theme continues
                 to determine the Window background behind the Flutter UI. -->
            <meta-data
                android:name="io.flutter.embedding.android.NormalTheme"
                android:resource="@style/NormalTheme" />

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <!-- Accepts URIs that begin with YOUR_SCHEME://YOUR_HOST -->
+                <data android:scheme="myprotocol" />
+            </intent-filter>
        </activity>
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
    </application>
</manifest>
iOS

Change the file ios/Runner/Info.plist as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CFBundleDevelopmentRegion</key>
	<string>$(DEVELOPMENT_LANGUAGE)</string>
	<key>CFBundleDisplayName</key>
	<string>Protocol Handler</string>
	<key>CFBundleExecutable</key>
	<string>$(EXECUTABLE_NAME)</string>
	<key>CFBundleIdentifier</key>
	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
	<key>CFBundleInfoDictionaryVersion</key>
	<string>6.0</string>
	<key>CFBundleName</key>
	<string>protocol_handler_example</string>
	<key>CFBundlePackageType</key>
	<string>APPL</string>
	<key>CFBundleShortVersionString</key>
	<string>$(FLUTTER_BUILD_NAME)</string>
	<key>CFBundleSignature</key>
	<string>????</string>
	<key>CFBundleVersion</key>
	<string>$(FLUTTER_BUILD_NUMBER)</string>
	<key>LSRequiresIPhoneOS</key>
	<true/>
	<key>UILaunchStoryboardName</key>
	<string>LaunchScreen</string>
	<key>UIMainStoryboardFile</key>
	<string>Main</string>
+	<key>CFBundleURLTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>CFBundleURLName</key>
+			<string></string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>myprotocol</string>
+			</array>
+		</dict>
+	</array>
	<key>UISupportedInterfaceOrientations</key>
	<array>
		<string>UIInterfaceOrientationPortrait</string>
		<string>UIInterfaceOrientationLandscapeLeft</string>
		<string>UIInterfaceOrientationLandscapeRight</string>
	</array>
	<key>UISupportedInterfaceOrientations~ipad</key>
	<array>
		<string>UIInterfaceOrientationPortrait</string>
		<string>UIInterfaceOrientationPortraitUpsideDown</string>
		<string>UIInterfaceOrientationLandscapeLeft</string>
		<string>UIInterfaceOrientationLandscapeRight</string>
	</array>
	<key>UIViewControllerBasedStatusBarAppearance</key>
	<false/>
</dict>
</plist>

macOS

Change the file macos/Runner/Info.plist as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CFBundleDevelopmentRegion</key>
	<string>$(DEVELOPMENT_LANGUAGE)</string>
	<key>CFBundleExecutable</key>
	<string>$(EXECUTABLE_NAME)</string>
	<key>CFBundleIconFile</key>
	<string></string>
	<key>CFBundleIdentifier</key>
	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
	<key>CFBundleInfoDictionaryVersion</key>
	<string>6.0</string>
	<key>CFBundleName</key>
	<string>$(PRODUCT_NAME)</string>
	<key>CFBundlePackageType</key>
	<string>APPL</string>
	<key>CFBundleShortVersionString</key>
	<string>$(FLUTTER_BUILD_NAME)</string>
	<key>CFBundleVersion</key>
	<string>$(FLUTTER_BUILD_NUMBER)</string>
	<key>LSMinimumSystemVersion</key>
	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
	<key>NSHumanReadableCopyright</key>
	<string>$(PRODUCT_COPYRIGHT)</string>
	<key>NSMainNibFile</key>
	<string>MainMenu</string>
+	<key>CFBundleURLTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>CFBundleURLName</key>
+			<string></string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>myprotocol</string>
+			</array>
+		</dict>
+	</array>
	<key>NSPrincipalClass</key>
	<string>NSApplication</string>
</dict>
</plist>
}
Windows

Change the file windows/runner/main.cpp as follows:

#include <flutter/dart_project.h>
#include <flutter/flutter_view_controller.h>
#include <windows.h>

#include "flutter_window.h"
#include "utils.h"

+#include <protocol_handler/protocol_handler_plugin.h>

int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
                      _In_ wchar_t *command_line, _In_ int show_command) {
+  HWND hwnd = ::FindWindow(L"FLUTTER_RUNNER_WIN32_WINDOW", L"protocol_handler_example");
+  if (hwnd != NULL) {
+    DispatchToProtocolHandler(hwnd);
+
+    ::ShowWindow(hwnd, SW_NORMAL);
+    ::SetForegroundWindow(hwnd);
+    return EXIT_FAILURE;
+  }

  // Attach to console when present (e.g., 'flutter run') or create a
  // new console when running with a debugger.
  if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {
    CreateAndAttachConsole();
  }

  // Initialize COM, so that it is available for use in the library and/or
  // plugins.
  ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);

  flutter::DartProject project(L"data");

  std::vector<std::string> command_line_arguments =
      GetCommandLineArguments();

  project.set_dart_entrypoint_arguments(std::move(command_line_arguments));

  FlutterWindow window(project);
  Win32Window::Point origin(10, 10);
  Win32Window::Size size(1280, 720);
  if (!window.CreateAndShow(L"protocol_handler_example", origin, size)) {
    return EXIT_FAILURE;
  }
  window.SetQuitOnClose(true);

  ::MSG msg;
  while (::GetMessage(&msg, nullptr, 0, 0)) {
    ::TranslateMessage(&msg);
    ::DispatchMessage(&msg);
  }

  ::CoUninitialize();
  return EXIT_SUCCESS;
}
import 'package:protocol_handler/protocol_handler.dart';

void main() async {
  // Must add this line.
  WidgetsFlutterBinding.ensureInitialized();

  // Register a custom protocol
  // For macOS platform needs to declare the scheme in ios/Runner/Info.plist
  await protocolHandler.register('myprotocol');

  runApp(MyApp());
}

Listening events #

class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> with ProtocolListener {
  @override
  void initState() {
    protocolHandler.addListener(this);
    super.initState();
  }

  @override
  void dispose() {
    protocolHandler.removeListener(this);
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    // ...
  }

  @override
  void onProtocolUrlReceived(String url) {
    String log = 'Url received: $url)';
    print(log);
  }
}

Please see the example app of this plugin for a full example.

Who's using it? #

  • Biyi - A convenient translation and dictionary app.

License #

MIT

16
likes
120
pub points
78%
popularity

Publisher

verified publisher iconleanflutter.org

This plugin allows Flutter apps to register and handle custom protocols (i.e. deep linking).

Repository (GitHub)
View/report issues

Documentation

API reference

License

Icon for licenses.MIT (LICENSE)

Dependencies

flutter, win32_registry

More

Packages that depend on protocol_handler