在 Android 使用語音辨識（RecognizerIntent）與網頁查詢

呼叫 Google 提供的語音辨識程式進行語音辨識後取得辨識結果，辨識結果可能有多筆，也可以使用查詢結果開啟 Google 做查詢。

main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="onText"
        android:text="語音辨識" />

    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="onWeb"
        android:text="網頁搜尋" />

    <ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <TextView
            android:id="@+id/tv"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />
    </ScrollView>

</LinearLayout>

SpeechRecognizerActivity

public class SpeechRecognizerActivity extends Activity {

    private static final String TAG = "SpeechRecognizerActivity";
    private TextView tv;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        this.tv = (TextView) this.findViewById(R.id.tv);
    }

    public void onText(View v) {
        Intent it = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        it.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        it.putExtra(RecognizerIntent.EXTRA_PROMPT, "請說...");
        this.startActivityForResult(it, 1);
    }

    public void onWeb(View v) {
        Intent it = new Intent(RecognizerIntent.ACTION_WEB_SEARCH);
        it.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
        it.putExtra(RecognizerIntent.EXTRA_PROMPT, "請說...");
        // 不用等結果
        this.startActivity(it);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent it) {
        if (requestCode != 1) {
            Log.d(TAG, "不是語音辨識");
            return;
        }
        if (resultCode != RESULT_OK) {
            Log.e(TAG, "語音辨識失敗");
            return;
        }
        List<String> list = it.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
        StringBuilder text = new StringBuilder();
        for (String s : list) {
            text.append(s + "\n");
        }
        this.tv.setText(text);
    }
}

必須開啟網路，否則會出現以下的錯誤。

成功了，語音辨識。

語音辨識查詢網路。