Support the platform iOS for Flutter (#1079)

@@ -24,14 +24,6 @@ jobs:
     steps:
     steps:
       - uses: actions/checkout@v4
       - uses: actions/checkout@v4
 
 
-      - name: Setup Flutter SDK
-        uses: flutter-actions/setup-flutter@v3
-        with:
-          channel: stable
-          version: latest
-
-      - uses: dart-lang/setup-dart@v1
-
       - name: Fix version
       - name: Fix version
         shell: bash
         shell: bash
         run: |
         run: |
@@ -104,6 +96,14 @@ jobs:
 
 
           ls -lh /tmp/to_be_published/linux
           ls -lh /tmp/to_be_published/linux
 
 
+      - name: Setup Flutter SDK
+        uses: flutter-actions/setup-flutter@v3
+        with:
+          channel: stable
+          version: latest
+
+      - uses: dart-lang/setup-dart@v1
+
       - name: Release
       - name: Release
         shell: bash
         shell: bash
         run: |
         run: |
@@ -127,14 +127,6 @@ jobs:
         with:
         with:
           key: ${{ matrix.os }}-flutter-release-package
           key: ${{ matrix.os }}-flutter-release-package
 
 
-      - name: Setup Flutter SDK
-        uses: flutter-actions/setup-flutter@v3
-        with:
-          channel: stable
-          version: latest
-
-      - uses: dart-lang/setup-dart@v1
-
       - name: Fix version
       - name: Fix version
         shell: bash
         shell: bash
         run: |
         run: |
@@ -205,6 +197,14 @@ jobs:
 
 
           ls -lh /tmp/to_be_published/macos
           ls -lh /tmp/to_be_published/macos
 
 
+      - name: Setup Flutter SDK
+        uses: flutter-actions/setup-flutter@v3
+        with:
+          channel: stable
+          version: latest
+
+      - uses: dart-lang/setup-dart@v1
+
       - name: Release
       - name: Release
         shell: bash
         shell: bash
         run: |
         run: |
@@ -429,8 +429,89 @@ jobs:
           flutter pub publish --dry-run
           flutter pub publish --dry-run
           flutter pub publish --force
           flutter pub publish --force
 
 
+  sherpa_onnx_ios:
+    # if: false
+    permissions:
+      id-token: write # Required for authentication using OIDC
+    name: sherpa_onnx_ios
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: ccache
+        uses: hendrikmuhs/ccache-action@v1.2
+        with:
+          key: ${{ matrix.os }}-flutter-release-package-ios
+
+      - name: Fix version
+        shell: bash
+        run: |
+          SHERPA_ONNX_VERSION=$(grep "SHERPA_ONNX_VERSION" ./CMakeLists.txt  | cut -d " " -f 2  | cut -d '"' -f 2)
+
+          src_dir=$PWD/flutter/sherpa_onnx_ios
+          pushd $src_dir
+          v="version: $SHERPA_ONNX_VERSION"
+          echo "v: $v"
+          sed -i.bak s"/^version: .*/$v/" ./pubspec.yaml
+          rm *.bak
+          git status
+          git diff
+
+      - name: Copy extra files
+        shell: bash
+        run: |
+          dst=flutter/sherpa_onnx_ios
+
+          mkdir $dst/example
+
+          cp -v flutter/sherpa_onnx/example/* $dst/example
+          cp -v LICENSE $dst/
+          cp -v CHANGELOG.md $dst/
+
+          git status
+
+      - name: Build ios
+        shell: bash
+        run: |
+          export CMAKE_CXX_COMPILER_LAUNCHER=ccache
+          export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
+          cmake --version
+          ./build-ios-shared.sh
+
+      - name: Copy pre-built libs
+        shell: bash
+        run: |
+          echo "----ios-arm64----"
+          cp -v build-ios-shared/ios-arm64/libsherpa-onnx-c-api.dylib flutter/sherpa_onnx_ios/ios/
+          cp -v build-ios-shared/ios-onnxruntime/onnxruntime.xcframework/ios-arm64/onnxruntime.a flutter/sherpa_onnx_ios/ios/libonnxruntime.a
+
+          ls -lh flutter/sherpa_onnx_ios/ios/libonnxruntime.a
+
+          mv -v flutter/sherpa_onnx_ios /tmp/to_be_published
+
+          ls -lh /tmp/to_be_published
+
+      - name: Setup Flutter SDK
+        uses: flutter-actions/setup-flutter@v3
+        with:
+          channel: stable
+          version: latest
+
+      - uses: dart-lang/setup-dart@v1
+
+      - name: Release
+        shell: bash
+        run: |
+          cd /tmp/to_be_published
+          du -h -d1 .
+
+          flutter pub get
+          flutter pub publish --dry-run
+          flutter pub publish --force
+
   sherpa_onnx:
   sherpa_onnx:
-    # needs: [sherpa_onnx_linux, sherpa_onnx_macos, sherpa_onnx_windows, sherpa_onnx_android]
+    needs: [sherpa_onnx_linux, sherpa_onnx_macos, sherpa_onnx_windows, sherpa_onnx_android, sherpa_onnx_ios]
     # if: false
     # if: false
     permissions:
     permissions:
       id-token: write # Required for authentication using OIDC
       id-token: write # Required for authentication using OIDC

@@ -109,3 +109,4 @@ sherpa-onnx-vits-*
 sherpa-onnx-telespeech-ctc-*
 sherpa-onnx-telespeech-ctc-*
 *.fst
 *.fst
 .ccache
 .ccache
+lib*.a

+## 1.10.11
+
+* Support the iOS platform for iOS.
+
 ## 1.10.10
 ## 1.10.10
 
 
 * Build sherpa-onnx into a single shared library.
 * Build sherpa-onnx into a single shared library.

@@ -11,7 +11,7 @@ project(sherpa-onnx)
 # ./nodejs-addon-examples
 # ./nodejs-addon-examples
 # ./dart-api-examples/
 # ./dart-api-examples/
 # ./sherpa-onnx/flutter/CHANGELOG.md
 # ./sherpa-onnx/flutter/CHANGELOG.md
-set(SHERPA_ONNX_VERSION "1.10.10")
+set(SHERPA_ONNX_VERSION "1.10.11")
 
 
 # Disable warning about
 # Disable warning about
 #
 #

+#!/usr/bin/env  bash
+#
+# Note: This script is to build sherpa-onnx for flutter/dart, which requires
+# us to use shared libraries for sherpa-onnx.
+#
+# Note: We still use static libraries for onnxruntime.
+
+set -e
+
+dir=build-ios-shared
+mkdir -p $dir
+cd $dir
+onnxruntime_version=1.17.1
+onnxruntime_dir=ios-onnxruntime/$onnxruntime_version
+
+SHERPA_ONNX_GITHUB=github.com
+
+if [ "$SHERPA_ONNX_GITHUB_MIRROW" == true ]; then
+    SHERPA_ONNX_GITHUB=hub.nuaa.cf
+fi
+
+if [ ! -f $onnxruntime_dir/onnxruntime.xcframework/ios-arm64/onnxruntime.a ]; then
+  mkdir -p $onnxruntime_dir
+  pushd $onnxruntime_dir
+  wget -c https://${SHERPA_ONNX_GITHUB}/csukuangfj/onnxruntime-libs/releases/download/v${onnxruntime_version}/onnxruntime.xcframework-${onnxruntime_version}.tar.bz2
+  tar xvf onnxruntime.xcframework-${onnxruntime_version}.tar.bz2
+  rm onnxruntime.xcframework-${onnxruntime_version}.tar.bz2
+  cd ..
+  ln -sf $onnxruntime_version/onnxruntime.xcframework .
+  popd
+fi
+
+# First, for simulator
+echo "Building for simulator (x86_64)"
+
+export SHERPA_ONNXRUNTIME_LIB_DIR=$PWD/ios-onnxruntime/onnxruntime.xcframework/ios-arm64_x86_64-simulator
+export SHERPA_ONNXRUNTIME_INCLUDE_DIR=$PWD/ios-onnxruntime/onnxruntime.xcframework/Headers
+
+echo "SHERPA_ONNXRUNTIME_LIB_DIR: $SHERPA_ONNXRUNTIME_LIB_DIR"
+echo "SHERPA_ONNXRUNTIME_INCLUDE_DIR $SHERPA_ONNXRUNTIME_INCLUDE_DIR"
+
+# Note: We use -DENABLE_ARC=1 here to fix the linking error:
+#
+# The symbol _NSLog is not defined
+#
+if [[ ! -f build/simulator_x86_64/install/lib/libsherpa-onnx-c-api.dylib ]]; then
+  cmake \
+    -DSHERPA_ONNX_ENABLE_BINARY=OFF \
+    -DBUILD_PIPER_PHONMIZE_EXE=OFF \
+    -DBUILD_PIPER_PHONMIZE_TESTS=OFF \
+    -DBUILD_ESPEAK_NG_EXE=OFF \
+    -DBUILD_ESPEAK_NG_TESTS=OFF \
+    -S .. \
+    -DCMAKE_TOOLCHAIN_FILE=./toolchains/ios.toolchain.cmake \
+    -DPLATFORM=SIMULATOR64 \
+    -DENABLE_BITCODE=0 \
+    -DENABLE_ARC=1 \
+    -DENABLE_VISIBILITY=1 \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=./build/simulator_x86_64/install \
+    -DBUILD_SHARED_LIBS=ON \
+    -DSHERPA_ONNX_ENABLE_PYTHON=OFF \
+    -DSHERPA_ONNX_ENABLE_TESTS=OFF \
+    -DSHERPA_ONNX_ENABLE_CHECK=OFF \
+    -DSHERPA_ONNX_ENABLE_PORTAUDIO=OFF \
+    -DSHERPA_ONNX_ENABLE_JNI=OFF \
+    -DSHERPA_ONNX_ENABLE_C_API=ON \
+    -DSHERPA_ONNX_ENABLE_WEBSOCKET=OFF \
+    -DDEPLOYMENT_TARGET=13.0 \
+    -B build/simulator_x86_64
+
+  cmake --build build/simulator_x86_64 -j 4 --target install
+fi
+
+echo "Building for simulator (arm64)"
+
+if [[ ! -f build/simulator_arm64/install/lib/libsherpa-onnx-c-api.dylib ]]; then
+  cmake \
+    -DSHERPA_ONNX_ENABLE_BINARY=OFF \
+    -DBUILD_PIPER_PHONMIZE_EXE=OFF \
+    -DBUILD_PIPER_PHONMIZE_TESTS=OFF \
+    -DBUILD_ESPEAK_NG_EXE=OFF \
+    -DBUILD_ESPEAK_NG_TESTS=OFF \
+    -S .. \
+    -DCMAKE_TOOLCHAIN_FILE=./toolchains/ios.toolchain.cmake \
+    -DPLATFORM=SIMULATORARM64 \
+    -DENABLE_BITCODE=0 \
+    -DENABLE_ARC=1 \
+    -DENABLE_VISIBILITY=1 \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=./build/simulator_arm64/install \
+    -DBUILD_SHARED_LIBS=ON \
+    -DSHERPA_ONNX_ENABLE_PYTHON=OFF \
+    -DSHERPA_ONNX_ENABLE_TESTS=OFF \
+    -DSHERPA_ONNX_ENABLE_CHECK=OFF \
+    -DSHERPA_ONNX_ENABLE_PORTAUDIO=OFF \
+    -DSHERPA_ONNX_ENABLE_JNI=OFF \
+    -DSHERPA_ONNX_ENABLE_C_API=ON \
+    -DSHERPA_ONNX_ENABLE_WEBSOCKET=OFF \
+    -DDEPLOYMENT_TARGET=13.0 \
+    -B build/simulator_arm64
+
+  cmake --build build/simulator_arm64 -j 4 --target install
+fi
+
+echo "Building for arm64"
+
+if [[ ! -f build/os64/install/lib/libsherpa-onnx-c-api.dylib ]]; then
+  export SHERPA_ONNXRUNTIME_LIB_DIR=$PWD/ios-onnxruntime/onnxruntime.xcframework/ios-arm64
+
+  cmake \
+    -DSHERPA_ONNX_ENABLE_BINARY=OFF \
+    -DBUILD_PIPER_PHONMIZE_EXE=OFF \
+    -DBUILD_PIPER_PHONMIZE_TESTS=OFF \
+    -DBUILD_ESPEAK_NG_EXE=OFF \
+    -DBUILD_ESPEAK_NG_TESTS=OFF \
+    -S .. \
+    -DCMAKE_TOOLCHAIN_FILE=./toolchains/ios.toolchain.cmake \
+    -DPLATFORM=OS64 \
+    -DENABLE_BITCODE=0 \
+    -DENABLE_ARC=1 \
+    -DENABLE_VISIBILITY=1 \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=./build/os64/install \
+    -DBUILD_SHARED_LIBS=ON \
+    -DSHERPA_ONNX_ENABLE_PYTHON=OFF \
+    -DSHERPA_ONNX_ENABLE_TESTS=OFF \
+    -DSHERPA_ONNX_ENABLE_CHECK=OFF \
+    -DSHERPA_ONNX_ENABLE_PORTAUDIO=OFF \
+    -DSHERPA_ONNX_ENABLE_JNI=OFF \
+    -DSHERPA_ONNX_ENABLE_C_API=ON \
+    -DSHERPA_ONNX_ENABLE_WEBSOCKET=OFF \
+    -DDEPLOYMENT_TARGET=13.0 \
+    -B build/os64
+
+  cmake --build build/os64 -j 4 --target install
+fi
+
+echo "Collect dynamic libraries "
+mkdir -p ios-arm64 ios-arm64-simulator ios-x86_64-simulator
+
+cp -v ./build/os64/install/lib/libsherpa-onnx-c-api.dylib ios-arm64/
+cp -v ./build/simulator_arm64/install/lib/libsherpa-onnx-c-api.dylib ios-arm64-simulator
+cp -v .//build/simulator_x86_64/install/lib/libsherpa-onnx-c-api.dylib ios-x86_64-simulator

@@ -10,7 +10,7 @@ environment:
 
 
 # Add regular dependencies here.
 # Add regular dependencies here.
 dependencies:
 dependencies:
-  sherpa_onnx: ^1.10.10
+  sherpa_onnx: ^1.10.11
   path: ^1.9.0
   path: ^1.9.0
   args: ^2.5.0
   args: ^2.5.0
 
 

@@ -11,7 +11,7 @@ environment:
 
 
 # Add regular dependencies here.
 # Add regular dependencies here.
 dependencies:
 dependencies:
-  sherpa_onnx: ^1.10.10
+  sherpa_onnx: ^1.10.11
   path: ^1.9.0
   path: ^1.9.0
   args: ^2.5.0
   args: ^2.5.0
 
 

@@ -8,7 +8,7 @@ environment:
 
 
 # Add regular dependencies here.
 # Add regular dependencies here.
 dependencies:
 dependencies:
-  sherpa_onnx: ^1.10.10
+  sherpa_onnx: ^1.10.11
   path: ^1.9.0
   path: ^1.9.0
   args: ^2.5.0
   args: ^2.5.0
 
 

@@ -9,7 +9,7 @@ environment:
   sdk: ^3.4.0
   sdk: ^3.4.0
 
 
 dependencies:
 dependencies:
-  sherpa_onnx: ^1.10.10
+  sherpa_onnx: ^1.10.11
   path: ^1.9.0
   path: ^1.9.0
   args: ^2.5.0
   args: ^2.5.0
 
 

@@ -123,3 +123,225 @@ index 536165d3..9b1a1012 100644
      id "org.jetbrains.kotlin.android" version "1.7.10" apply false
      id "org.jetbrains.kotlin.android" version "1.7.10" apply false
  }
  }
 ```
 ```
+
+# ios
+
+To support ios, run
+
+```bash
+cd streaming_asr
+flutter create --platforms ios ./
+```
+
+Connect your iPhone to the computer, and run `flutter devices`, which will print:
+
+```bash
+Found 3 connected devices:
+  iPhone (mobile) • 00008030-001064212E85802E • ios            • iOS 16.3 20D47
+  macOS (desktop) • macos                     • darwin-x64     • macOS 13.1 22C65 darwin-x64
+  Chrome (web)    • chrome                    • web-javascript • Google Chrome 126.0.6478.127
+
+No wireless devices were found.
+
+Run "flutter emulators" to list and start any available device emulators.
+
+If you expected another device to be detected, please run "flutter doctor" to diagnose potential issues. You may also try increasing the time to wait
+for connected devices with the "--device-timeout" flag. Visit https://flutter.dev/setup/ for troubleshooting tips.
+```
+
+Then run
+
+```bash
+flutter run -d 00008030-001064212E85802E
+```
+
+It will show:
+```
+Launching lib/main.dart on iPhone in debug mode...
+════════════════════════════════════════════════════════════════════════════════
+No valid code signing certificates were found
+You can connect to your Apple Developer account by signing in with your Apple ID
+in Xcode and create an iOS Development Certificate as well as a Provisioning
+Profile for your project by:
+  1- Open the Flutter project's Xcode target with
+       open ios/Runner.xcworkspace
+  2- Select the 'Runner' project in the navigator then the 'Runner' target
+     in the project settings
+  3- Make sure a 'Development Team' is selected under Signing & Capabilities > Team.
+     You may need to:
+         - Log in with your Apple ID in Xcode first
+         - Ensure you have a valid unique Bundle ID
+         - Register your device with your Apple Developer Account
+         - Let Xcode automatically provision a profile for your app
+  4- Build or run your project again
+  5- Trust your newly created Development Certificate on your iOS device
+     via Settings > General > Device Management > [your new certificate] > Trust
+
+For more information, please visit:
+  https://developer.apple.com/library/content/documentation/IDEs/Conceptual/
+  AppDistributionGuide/MaintainingCertificates/MaintainingCertificates.html
+
+Or run on an iOS simulator without code signing
+════════════════════════════════════════════════════════════════════════════════
+Error: No development certificates available to code sign app for device deployment
+```
+
+Follow the above instructions.
+
+The following is a screenshot.
+
+![](./ios-demo-1.jpg)
+
+Then close `xcode` and run again
+
+```bash
+flutter run -d 00008030-001064212E85802E
+```
+
+You would get the following errors:
+```
+Error (Xcode): Undefined symbol: ___cxa_pure_virtual
+
+
+Error (Xcode): Undefined symbol: ___cxa_throw
+
+
+Error (Xcode): Undefined symbol: ___gxx_personality_v0
+
+
+
+Error launching application on iPhone.
+```
+
+Make the following changes:
+
+```diff
+diff --git a/flutter-examples/streaming_asr/ios/Runner.xcodeproj/project.pbxproj b/flutter-examples/streaming_asr/ios/Runner.xcodeproj/project.pbxproj
+index b208c7e9..466b0afb 100644
+--- a/flutter-examples/streaming_asr/ios/Runner.xcodeproj/project.pbxproj
++++ b/flutter-examples/streaming_asr/ios/Runner.xcodeproj/project.pbxproj
+@@ -482,6 +482,7 @@
+ 				PRODUCT_NAME = "$(TARGET_NAME)";
+ 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+ 				SWIFT_VERSION = 5.0;
++				OTHER_LDFLAGS = "-lc++";
+ 				VERSIONING_SYSTEM = "apple-generic";
+ 			};
+ 			name = Profile;
+@@ -500,6 +501,7 @@
+ 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+ 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+ 				SWIFT_VERSION = 5.0;
++				OTHER_LDFLAGS = "-lc++";
+ 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Runner.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/Runner";
+ 			};
+ 			name = Debug;
+@@ -516,6 +518,7 @@
+ 				PRODUCT_BUNDLE_IDENTIFIER = com.k2fsa.sherpa.onnx.streamingAsr.RunnerTests;
+ 				PRODUCT_NAME = "$(TARGET_NAME)";
+ 				SWIFT_VERSION = 5.0;
++				OTHER_LDFLAGS = "-lc++";
+ 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Runner.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/Runner";
+ 			};
+ 			name = Release;
+@@ -532,6 +535,7 @@
+ 				PRODUCT_BUNDLE_IDENTIFIER = com.k2fsa.sherpa.onnx.streamingAsr.RunnerTests;
+ 				PRODUCT_NAME = "$(TARGET_NAME)";
+ 				SWIFT_VERSION = 5.0;
++				OTHER_LDFLAGS = "-lc++";
+ 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Runner.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/Runner";
+ 			};
+ 			name = Profile;
+@@ -666,6 +670,7 @@
+ 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+ 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+ 				SWIFT_VERSION = 5.0;
++				OTHER_LDFLAGS = "-lc++";
+ 				VERSIONING_SYSTEM = "apple-generic";
+ 			};
+ 			name = Debug;
+@@ -688,6 +693,7 @@
+ 				PRODUCT_NAME = "$(TARGET_NAME)";
+ 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+ 				SWIFT_VERSION = 5.0;
++				OTHER_LDFLAGS = "-lc++";
+ 				VERSIONING_SYSTEM = "apple-generic";
+ 			};
+ 			name = Release;
+```
+
+Then re-run
+
+```bash
+flutter run -d 00008030-001064212E85802E
+```
+
+Finally, it shows the following:
+
+```
+Launching lib/main.dart on iPhone in debug mode...
+Automatically signing iOS for device deployment using specified development team in Xcode project: N5ZH3Z63A6
+Running Xcode build...
+ └─Compiling, linking and signing...                         9.0s
+Xcode build done.                                           25.6s
+(lldb) 2024-07-06 17:43:54.970077+0800 Runner[4851:965716] [SceneConfiguration] Info.plist contained no UIScene configuration dictionary (looking for configuration named "(no name)")
+Warning: Unable to create restoration in progress marker file
+fopen failed for data file: errno = 2 (No such file or directory)
+Errors found! Invalidating cache...
+fopen failed for data file: errno = 2 (No such file or directory)
+Errors found! Invalidating cache...
+Installing and launching...                                        31.8s
+Syncing files to device iPhone...                                1,080ms
+
+Flutter run key commands.
+r Hot reload. 🔥🔥🔥
+R Hot restart.
+h List all available interactive commands.
+d Detach (terminate "flutter run" but leave application running).
+c Clear the screen
+q Quit (terminate the application on the device).
+
+A Dart VM Service on iPhone is available at: http://127.0.0.1:51556/QDn_7CJ2gzk=/
+The Flutter DevTools debugger and profiler on iPhone is available at: http://127.0.0.1:9100?uri=http://127.0.0.1:51556/QDn_7CJ2gzk=/
+```
+
+If it shows the following log after pressing `start` within the sherpa-onnx APP on your iPhone:
+
+```
+[access] This app has crashed because it attempted to access privacy-sensitive data without a usage description.  The app's Info.plist must contain an NSMicrophoneUsageDescription key with a string value explaining to the user how the app uses this data.
+```
+
+Please make the following changes
+```diff
+--- a/flutter-examples/streaming_asr/ios/Runner/Info.plist
++++ b/flutter-examples/streaming_asr/ios/Runner/Info.plist
+@@ -2,6 +2,8 @@
+ <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+ <plist version="1.0">
+ <dict>
++       <key>NSMicrophoneUsageDescription</key>
++       <string>Need microphone access for recording speech</string>
+        <key>CFBundleDevelopmentRegion</key>
+        <string>$(DEVELOPMENT_LANGUAGE)</string>
+        <key>CFBundleDisplayName</key>
+```
+
+And re-run
+
+```bash
+flutter run -d 00008030-001064212E85802E
+```
+
+The following are some screenshots of the iOS APP:
+
+|1|2|3|
+|---|---|---|
+|![](./ios-demo-2.jpg)|![](./ios-demo-3.jpg)|![](./ios-demo-4.jpg)|
+
+
+**Hint**: If you find that you cannot start the APP on your iPhone after
+disconnecting from the computer, please use
+
+```bash
+flutter run --release -d 00008030-001064212E85802E
+```

-# streaming_asr
+# Real-time speech recognition
 
 
-A new Flutter project.
+This APP supports the following platforms:
+
+  - Windows
+  - macOS
+  - Android
+  - iOS
+
+Note that it does not support Linux since we are using
+the package [record](https://pub.dev/packages/record), which does not
+support streaming recording on Linux.
+
+If you can find a recording package
+that works on Linux, please let us know and we will update this app to support Linux.
 
 
 ## Getting Started
 ## Getting Started
 
 
-This project is a starting point for a Flutter application.
+Remember to use the following steps to download a model. Otherwise, you would
+get errors after you start and run the app.
+
+###  1. Select a streaming model
+
+Please visit <https://github.com/k2-fsa/sherpa-onnx/releases/tag/asr-models>
+to download a streaming ASR model.
+
+You can find introductions about each streaming model at
+<https://k2-fsa.github.io/sherpa/onnx/pretrained_models/index.html>
+
+
+Note: `Streaming` is the same as `Online` in this context.
+
+### 2. Let the code know which model you are using
+
+We have pre-configured some streaming models in the following file
+
+<https://github.com/k2-fsa/sherpa-onnx/blob/master/flutter-examples/streaming_asr/lib/online_model.dart>
+
+If you select a model that is not in the above file, please add it to the above file
+by yourself by following how existing models are added.
+
+Then you need to update
+
+<https://github.com/k2-fsa/sherpa-onnx/blob/master/flutter-examples/streaming_asr/lib/streaming_asr.dart#L16>
+
+```
+final type = 0;
+```
+
+Please change ``type`` accordingly.
+
+You also need to change [./pubspec.yaml](./pubspec.yaml) so that your APP knows where to find it.
+Please see the example below for how to do that.
+
+### 3. Place your downloaded model inside the directory assets
+
+The downloaded model has to be placed in the [assets](./assets) directory.
+
+**HINT**: Please delete files that are not needed by the code. Otherwise, you put
+unnecessary files in your APP and it will significantly increase the size of your APP.
+
+## Example
+
+Suppose you have selected the following model
+
+<https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20.tar.bz2>
+
+Please use the following steps to make it available in your APP.
+
+ - 1. Change [online_model.dart](./lib/online_model.dart)
+
+    This model is already in the file and its type is `0`, so there is no need to change this file.
+
+ - 2. Change [streaming_asr.dart](./lib/streaming_asr.dart)
+
+    The default value for `type` is 0 and our model has also a type of `0`, so there is no need to change this file.
+
+ - 3. Change [pubspec.yaml](./pubspec.yaml)
+
+   At the end of [pubspec.yaml](./pubspec.yaml), please change it exactly like below:
+
+```
+  assets:
+    - assets/
+    - assets/sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20/
+```
+
+  - 4. Download the model to the [./assets](./assets) directory.
+
+```
+cd assets
+wget https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20.tar.bz2
+tar xvf sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20.tar.bz2
+
+# Remeber to remove unused files.
+rm -rf sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20/test_wavs
+rm sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20/README.md
+rm sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20/bpe*
+rm sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20/encoder-epoch-99-avg-1.onnx
+rm sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20/decoder-epoch-99-avg-1.int8.onnx
+rm sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20/joiner-epoch-99-avg-1.int8.onnx
+```
+
+Your [assets](./assets) directory should look like below at the end.
+
+```
+assets/
+└── sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20
+    ├── decoder-epoch-99-avg-1.onnx
+    ├── encoder-epoch-99-avg-1.int8.onnx
+    ├── joiner-epoch-99-avg-1.onnx
+    └── tokens.txt
+
+1 directory, 4 files
+```
+
+  - 5. Run it!
 
 
-A few resources to get you started if this is your first Flutter project:
+    For instance
 
 
-- [Lab: Write your first Flutter app](https://docs.flutter.dev/get-started/codelab)
-- [Cookbook: Useful Flutter samples](https://docs.flutter.dev/cookbook)
+      - `flutter run -d macos` for macOS.
 
 
-For help getting started with Flutter development, view the
-[online documentation](https://docs.flutter.dev/), which offers tutorials,
-samples, guidance on mobile development, and a full API reference.
+      - `flutter run -d windows` for windows.

+**/dgph
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/ephemeral/
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3

+<?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>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>12.0</string>
+</dict>
+</plist>

+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"

+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"

+# Uncomment this line to define a global platform for your project
+# platform :ios, '12.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_ios_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+  target 'RunnerTests' do
+    inherit! :search_paths
+  end
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_ios_build_settings(target)
+  end
+end

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+		};
+		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147031CF9000F007C117D /* Debug */,
+				97C147041CF9000F007C117D /* Release */,
+				249021D3217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

+<?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>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

+<?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>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "331C8080294A63A400263BE5"
+               BuildableName = "RunnerTests.xctest"
+               BlueprintName = "RunnerTests"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

+<?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>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

+<?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>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

+import Flutter
+import UIKit
+
+@UIApplicationMain
+@objc class AppDelegate: FlutterAppDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    GeneratedPluginRegistrant.register(with: self)
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+}

+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

+<?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>NSMicrophoneUsageDescription</key>
+	<string>Need microphone access for recording speech</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Streaming Asr</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>streaming_asr</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(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>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>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
+</dict>
+</plist>

+#import "GeneratedPluginRegistrant.h"

+import Flutter
+import UIKit
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+  func testExample() {
+    // If you add code to the Runner application, consider adding tests here.
+    // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+  }
+
+}

@@ -5,7 +5,7 @@ description: >
 
 
 publish_to: 'none'
 publish_to: 'none'
 
 
-version: 1.10.10
+version: 1.10.11
 
 
 topics:
 topics:
   - speech-recognition
   - speech-recognition
@@ -30,7 +30,7 @@ dependencies:
   record: ^5.1.0
   record: ^5.1.0
   url_launcher: ^6.2.6
   url_launcher: ^6.2.6
 
 
-  sherpa_onnx: ^1.10.10
+  sherpa_onnx: ^1.10.11
   # sherpa_onnx:
   # sherpa_onnx:
     # path: ../../flutter/sherpa_onnx
     # path: ../../flutter/sherpa_onnx
 
 

@@ -15,20 +15,26 @@ flutter create --template plugin sherpa_onnx
 flutter create --template plugin_ffi --platforms macos sherpa_onnx_macos
 flutter create --template plugin_ffi --platforms macos sherpa_onnx_macos
 ```
 ```
 
 
-3. Create `sherpa_onnx_linux
+3. Create `sherpa_onnx_linux`
 
 
 ```bash
 ```bash
 flutter create --template plugin_ffi --platforms linux sherpa_onnx_linux
 flutter create --template plugin_ffi --platforms linux sherpa_onnx_linux
 ```
 ```
 
 
-4. Create `sherpa_onnx_windows
+4. Create `sherpa_onnx_windows`
 
 
 ```bash
 ```bash
 flutter create --template plugin_ffi --platforms linux sherpa_onnx_windows
 flutter create --template plugin_ffi --platforms linux sherpa_onnx_windows
 ```
 ```
 
 
-5. Create `sherpa_onnx_android
+5. Create `sherpa_onnx_android`
 
 
 ```bash
 ```bash
 flutter create --template plugin_ffi --platforms android --org com.k2fsa.sherpa.onnx sherpa_onnx_android
 flutter create --template plugin_ffi --platforms android --org com.k2fsa.sherpa.onnx sherpa_onnx_android
 ```
 ```
+
+6. Create `sherpa_onnx_ios`
+
+```bash
+flutter create --template plugin_ffi --platforms ios sherpa_onnx_ios
+```

@@ -19,11 +19,9 @@ String? _path;
 
 
 // see also
 // see also
 // https://github.com/flutter/codelabs/blob/main/ffigen_codelab/step_05/lib/ffigen_app.dart
 // https://github.com/flutter/codelabs/blob/main/ffigen_codelab/step_05/lib/ffigen_app.dart
+// https://api.flutter.dev/flutter/dart-io/Platform-class.html
 final DynamicLibrary _dylib = () {
 final DynamicLibrary _dylib = () {
-  if (Platform.isIOS) {
-    throw UnsupportedError('Unknown platform: ${Platform.operatingSystem}');
-  }
-  if (Platform.isMacOS) {
+  if (Platform.isMacOS || Platform.isIOS) {
     if (_path == null) {
     if (_path == null) {
       return DynamicLibrary.open('libsherpa-onnx-c-api.dylib');
       return DynamicLibrary.open('libsherpa-onnx-c-api.dylib');
     } else {
     } else {

@@ -17,7 +17,7 @@ topics:
   - voice-activity-detection
   - voice-activity-detection
 
 
 # remember to change the version in ../sherpa_onnx_macos/macos/sherpa_onnx_macos.podspec
 # remember to change the version in ../sherpa_onnx_macos/macos/sherpa_onnx_macos.podspec
-version: 1.10.10
+version: 1.10.11
 
 
 homepage: https://github.com/k2-fsa/sherpa-onnx
 homepage: https://github.com/k2-fsa/sherpa-onnx
 
 
@@ -30,24 +30,31 @@ dependencies:
   flutter:
   flutter:
     sdk: flutter
     sdk: flutter
 
 
-  sherpa_onnx_android: ^1.10.10
+  sherpa_onnx_android: ^1.10.11
     # path: ../sherpa_onnx_android
     # path: ../sherpa_onnx_android
 
 
-  sherpa_onnx_macos: ^1.10.10
+  sherpa_onnx_macos: ^1.10.11
     # path: ../sherpa_onnx_macos
     # path: ../sherpa_onnx_macos
 
 
-  sherpa_onnx_linux: ^1.10.10
+  sherpa_onnx_linux: ^1.10.11
     # path: ../sherpa_onnx_linux
     # path: ../sherpa_onnx_linux
     #
     #
-  sherpa_onnx_windows: ^1.10.10
+  sherpa_onnx_windows: ^1.10.11
     # path: ../sherpa_onnx_windows
     # path: ../sherpa_onnx_windows
 
 
+  sherpa_onnx_ios: ^1.10.11
+  # sherpa_onnx_ios:
+    # path: ../sherpa_onnx_ios
+
 flutter:
 flutter:
   plugin:
   plugin:
     platforms:
     platforms:
       android:
       android:
         default_package: sherpa_onnx_android
         default_package: sherpa_onnx_android
 
 
+      ios:
+        default_package: sherpa_onnx_ios
+
       macos:
       macos:
         default_package: sherpa_onnx_macos
         default_package: sherpa_onnx_macos
 
 

+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+build/

+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "5dcb86f68f239346676ceb1ed1ea385bd215fba1"
+  channel: "stable"
+
+project_type: plugin_ffi
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+      base_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+    - platform: ios
+      create_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+      base_revision: 5dcb86f68f239346676ceb1ed1ea385bd215fba1
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

+# sherpa_onnx_linux
+
+This is a sub project of [sherpa-onnx](https://github.com/k2-fsa/sherpa-onnx).
+
+You are not expected to use this package directly.
+
+Please see the entry point at <https://pub.dev/packages/sherpa_onnx>.

+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

+#
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
+# Run `pod lib lint sherpa_onnx_ios.podspec` to validate before publishing.
+#
+# See also
+# https://github.com/google/webcrypto.dart/blob/2010361a106d7a872d90e3dfebfed250e2ede609/ios/webcrypto.podspec#L23-L28
+# https://groups.google.com/g/dart-ffi/c/nUATMBy7r0c
+Pod::Spec.new do |s|
+  s.name             = 'sherpa_onnx_ios'
+  s.version          = '1.10.11'
+  s.summary          = 'A new Flutter FFI plugin project.'
+  s.description      = <<-DESC
+A new Flutter FFI plugin project.
+                       DESC
+  s.homepage         = 'https://github.com/k2-fsa/sherpa-onnx'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Fangjun Kuang' => 'csukuangfj@gmail.com' }
+
+  # This will ensure the source files in Classes/ are included in the native
+  # builds of apps using this FFI plugin. Podspec does not support relative
+  # paths, so Classes contains a forwarder C file that relatively imports
+  # `../src/*` so that the C sources can be shared among all target platforms.
+  s.source           = { :path => '.' }
+  s.dependency 'Flutter'
+  s.platform = :ios, '12.0'
+  s.ios.vendored_libraries = '*.dylib', '*.a'
+
+  # Flutter.framework does not contain a i386 slice.
+  s.pod_target_xcconfig = {
+    'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386'
+    }
+  s.swift_version = '5.0'
+end

+# Introduction
+
+This directory is left empty intentionally.

+name: sherpa_onnx_ios
+
+description: >
+  Speech recognition, speech synthesis, and speaker recognition using next-gen Kaldi
+  with onnxruntime without Internet connection.
+
+version: 0.0.1
+
+repository: https://github.com/k2-fsa/sherpa-onnx/tree/master/flutter
+
+issue_tracker: https://github.com/k2-fsa/sherpa-onnx/issues
+documentation: https://k2-fsa.github.io/sherpa/onnx/
+
+homepage: https://github.com/k2-fsa/sherpa-onnx
+
+topics:
+  - speech-recognition
+  - speech-synthesis
+  - speaker-identification
+  - audio-tagging
+  - voice-activity-detection
+
+environment:
+  sdk: '>=3.4.0 <4.0.0'
+  flutter: '>=3.3.0'
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+flutter:
+  plugin:
+    platforms:
+      ios:
+        ffiPlugin: true
+

@@ -4,7 +4,7 @@
 #
 #
 Pod::Spec.new do |s|
 Pod::Spec.new do |s|
   s.name             = 'sherpa_onnx_macos'
   s.name             = 'sherpa_onnx_macos'
-  s.version          = '1.10.7'
+  s.version          = '1.10.11'
   s.summary          = 'sherpa-onnx Flutter FFI plugin project.'
   s.summary          = 'sherpa-onnx Flutter FFI plugin project.'
   s.description      = <<-DESC
   s.description      = <<-DESC
 sherpa-onnx Flutter FFI plugin project.
 sherpa-onnx Flutter FFI plugin project.