add: tricky logic for android chrome

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lambda-tech-club · Jan 3, 2021 · 4f06e19 · 4f06e19
1 parent 902adc9
commit 4f06e19
Showing 1 changed file with 18 additions and 6 deletions.
diff --git a/pages/index.js b/pages/index.js
@@ -19,6 +19,7 @@ const Home = () => {
   const [detecting, setDetecting] = useState(false); // 音声認識ステータス
   const [finalText, setFinalText] = useState(""); // 確定された文章
   const [transcript, setTranscript] = useState("ボタンを押して検知開始"); // 認識中の文章
+  const [android, setAndroid] = useState(false); // Android chrome用のフラグ
   // 単語検知
   const initialTagValues = ["年収"]; // デフォルト検知単語
   const candidates = ["年収", "自由", "成功"]; // 検知単語候補
@@ -35,28 +36,37 @@ const Home = () => {
       alert("お使いのブラウザには未対応です");
       return;
     }
+
+    // Androidのためのプラグ
+    if (/Android/i.test(navigator.userAgent)) {
+      setAndroid(true);
+    };
+
     // NOTE: 将来的にwebkit prefixが取れる可能性があるため
     const SpeechRecognition =
       window.SpeechRecognition || window.webkitSpeechRecognition;
     recognizerRef.current = new SpeechRecognition();
     recognizerRef.current.lang = "ja-JP";
     recognizerRef.current.interimResults = true;
     recognizerRef.current.continuous = true;
-    recognizerRef.current.onstart = () => {
-      setDetecting(true);
-    };
     recognizerRef.current.onend = () => {
-      setTranscript("");
-      setDetecting(false);
+      if (detecting) {
+        recognizerRef.current.start();
+      };
     };
     recognizerRef.current.onresult = event => {
       [...event.results].slice(event.resultIndex).forEach(result => {
         const transcript = result[0].transcript;
         if (result.isFinal) {
           // 音声認識が完了して文章が確定
           setFinalText(prevState => {
+            if (android) {
+              // Android chromeなら値をそのまま返す
+              return transcript;
+            };
             return prevState + transcript;
           });
+          // 文章確定したら候補を削除
           setTranscript("");
           return;
         }
@@ -144,6 +154,7 @@ const Home = () => {
                 color="primary"
                 size="large"
                 onClick={() => {
+                  setDetecting(true);
                   recognizerRef.current.start();
                 }}
               >
@@ -158,7 +169,8 @@ const Home = () => {
                   color="secondary"
                   size="large"
                   onClick={() => {
-                    recognizerRef.current.onend();
+                    setDetecting(false);
+                    recognizerRef.current.stop();
                   }}
               >
                 {detecting ? "検知停止" : "検知待ち"}