Add Voice Recognition Sample application

* Add Voice Recognition Sample application

VoiceRecognitionSample/.gitignore

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+*.iml
+.gradle
+/local.properties
+.idea
+.project
+.settings
+.DS_Store
+/bin
+/build
+/captures
+/out
+.externalNativeBuild
+.cxx
+

VoiceRecognitionSample/LICENSE

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+Copyright 2020 License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

VoiceRecognitionSample/README.md

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+# Glass Voice Recognition Sample
+
+This project demonstrates a minimal Glass application and basic use of built in [Speech Recognizer activity](https://developer.android.com/reference/android/speech/RecognizerIntent).
+
+## Running
+
+This sample does not require any additional setup. Open the project in Android Studio, connect your device,
+and press Play to launch the app!

VoiceRecognitionSample/app/.gitignore

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+/build

VoiceRecognitionSample/app/build.gradle

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+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 28
+    defaultConfig {
+        applicationId "com.example.glass.camera2sample"
+        minSdkVersion 27
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+}
+
+dependencies {
+    implementation 'com.example.glass.ui:gesture-lib-sample:0.1.0-SNAPSHOT'
+
+    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+}

VoiceRecognitionSample/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2020 Google LLC
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+     http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.glass.voicerecognitionsample">
+
+  <application
+      android:allowBackup="true"
+      android:icon="@mipmap/ic_launcher"
+      android:label="@string/app_name"
+      android:roundIcon="@mipmap/ic_launcher_round"
+      android:supportsRtl="true"
+      android:theme="@style/AppTheme">
+    <!--
+      Changes Glass touchpad response from the following key strokes:
+        - Enter
+        - Tab
+        - Shift + Tab
+        - Back button
+        - Home button
+        - Arrows
+      to the motion events, enabling this app to use the touch gestures.
+    -->
+    <meta-data
+        android:name="com.google.android.glass.TouchEnabledApplication"
+        android:value="true" />
+
+    <activity android:name="com.example.glass.voicerecognitionsample.MainActivity">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+
+        <category android:name="android.intent.category.LAUNCHER" />
+        <!--
+          Makes this app visible on the application list in the Glass Launcher.
+        -->
+        <category android:name="com.google.android.glass.category.DIRECTORY" />
+      </intent-filter>
+    </activity>
+  </application>
+
+</manifest>

VoiceRecognitionSample/app/src/main/java/com/example/glass/voicerecognitionsample/MainActivity.java

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+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.glass.voicerecognitionsample;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.speech.RecognizerIntent;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.widget.TextView;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import com.example.glass.ui.GlassGestureDetector;
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainActivity extends AppCompatActivity implements
+    GlassGestureDetector.OnGestureListener {
+
+  private static final int REQUEST_CODE = 999;
+  private static final String TAG = MainActivity.class.getSimpleName();
+  private static final String DELIMITER = "\n";
+
+  private TextView resultTextView;
+  private GlassGestureDetector glassGestureDetector;
+  private List<String> mVoiceResults = new ArrayList<>(4);
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    setContentView(R.layout.activity_main);
+    resultTextView = findViewById(R.id.results);
+    glassGestureDetector = new GlassGestureDetector(this, this);
+  }
+
+  @Override
+  protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+    super.onActivityResult(requestCode, resultCode, data);
+
+    if (resultCode == RESULT_OK) {
+      final List<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
+      Log.d(TAG, "results: " + results.toString());
+      if (results != null && results.size() > 0 && !results.get(0).isEmpty()) {
+        updateUI(results.get(0));
+      }
+    } else {
+      Log.d(TAG, "Result not OK");
+    }
+  }
+
+  @Override
+  public boolean dispatchTouchEvent(MotionEvent ev) {
+    return glassGestureDetector.onTouchEvent(ev) || super.dispatchTouchEvent(ev);
+  }
+
+  @Override
+  public boolean onGesture(GlassGestureDetector.Gesture gesture) {
+    switch (gesture) {
+      case TAP:
+        requestVoiceRecognition();
+        return true;
+      case SWIPE_DOWN:
+        finish();
+        return true;
+      default:
+        return false;
+    }
+  }
+
+  private void requestVoiceRecognition() {
+    final Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
+    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
+        RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
+    startActivityForResult(intent, REQUEST_CODE);
+  }
+
+  private void updateUI(String result) {
+    if (mVoiceResults.size() >= 4) {
+      mVoiceResults.remove(mVoiceResults.size() - 1);
+    }
+    mVoiceResults.add(0, result);
+    final String recognizedText = String.join(DELIMITER, mVoiceResults);
+    resultTextView.setText(recognizedText);
+  }
+}

VoiceRecognitionSample/app/src/main/res/drawable/ic_launcher_foreground.xml

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+<!--
+ Copyright 2020 Google LLC
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+     http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="40.33071"
+    android:viewportHeight="40.33071"
+    android:tint="#FFFFFF">
+  <group android:translateX="8.165356"
+      android:translateY="8.912221">
+      <path
+          android:fillColor="#FF000000"
+          android:pathData="M9,9m-4,0a4,4 0,1 1,8 0a4,4 0,1 1,-8 0"/>
+      <path
+          android:fillColor="#FF000000"
+          android:pathData="M9,15c-2.67,0 -8,1.34 -8,4v2h16v-2c0,-2.66 -5.33,-4 -8,-4zM16.76,5.36l-1.68,1.69c0.84,1.18 0.84,2.71 0,3.89l1.68,1.69c2.02,-2.02 2.02,-5.07 0,-7.27zM20.07,2l-1.63,1.63c2.77,3.02 2.77,7.56 0,10.74L20.07,16c3.9,-3.89 3.91,-9.95 0,-14z"/>
+  </group>
+</vector>

VoiceRecognitionSample/app/src/main/res/layout/activity_main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+ <!--
+ Copyright 2020 Google LLC
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+     http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="@dimen/default_view_margin"
+    tools:context="com.example.glass.voicerecognitionsample.MainActivity">
+
+  <ImageView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:alpha="0.3"
+      android:contentDescription="Background image"
+      android:src="@drawable/ic_launcher_foreground"
+      app:layout_constraintBottom_toBottomOf="parent"
+      app:layout_constraintLeft_toLeftOf="parent"
+      app:layout_constraintRight_toRightOf="parent"
+      app:layout_constraintTop_toTopOf="parent" />
+
+  <TextView
+      android:id="@+id/instruction"
+      style="@style/HeaderText"
+      android:layout_width="0dp"
+      android:layout_height="wrap_content"
+      android:text="@string/voice_instruction"
+      app:layout_constraintBottom_toBottomOf="parent"
+      app:layout_constraintLeft_toLeftOf="parent"
+      app:layout_constraintRight_toRightOf="parent"
+      app:layout_constraintTop_toBottomOf="@id/results" />
+
+  <TextView
+      android:id="@+id/results"
+      style="@style/VoiceResultsText"
+      android:layout_width="0dp"
+      android:layout_height="0dp"
+      app:layout_constraintBottom_toTopOf="@id/instruction"
+      app:layout_constraintLeft_toLeftOf="parent"
+      app:layout_constraintRight_toRightOf="parent"
+      app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

VoiceRecognitionSample/app/src/main/res/mipmap-anydpi/ic_launcher.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2020 Google LLC
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+     http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

VoiceRecognitionSample/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2020 Google LLC
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+     http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

VoiceRecognitionSample/app/src/main/res/values/dimens.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2020 Google LLC
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+     http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<resources>
+  <dimen name="default_view_margin">40dp</dimen>
+  <dimen name="margin_bottom">24dp</dimen>
+  <dimen name="instruction_text_size">34sp</dimen>
+  <dimen name="voice_results_text_size">28sp</dimen>
+</resources>

VoiceRecognitionSample/app/src/main/res/values/ic_launcher_background.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2020 Google LLC
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+     http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<resources>
+    <color name="ic_launcher_background">#FF9800</color>
+</resources>