EditText如何集成語音轉文字

要在EditText中集成語音轉文字功能，可以使用Android提供的語音識別API。以下是一個簡單的示例代碼，演示如何在EditText中集成語音轉文字功能：

1. 在AndroidManifest.xml文件中添加權限：

<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.INTERNET"/>

2. 在布局文件中添加一個EditText和一個按鈕：

<EditText
    android:id="@+id/editText"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

<Button
    android:id="@+id/speechToTextButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Speech to Text"/>

3. 在Activity中添加相關代碼：

import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    private EditText editText;
    private SpeechRecognizer speechRecognizer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        editText = findViewById(R.id.editText);
        speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
        speechRecognizer.setRecognitionListener(new RecognitionListener() {
            @Override
            public void onResults(Bundle results) {
                ArrayList<String> voiceResults = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
                if (voiceResults != null) {
                    editText.setText(voiceResults.get(0));
                }
            }

            @Override
            public void onBeginningOfSpeech() { }

            @Override
            public void onRmsChanged(float rmsdB) { }

            @Override
            public void onReadyForSpeech(Bundle params) { }

            @Override
            public void onBufferReceived(byte[] buffer) { }

            @Override
            public void onEndOfSpeech() { }

            @Override
            public void onError(int error) { }

            @Override
            public void onPartialResults(Bundle partialResults) { }

            @Override
            public void onEvent(int eventType, Bundle params) { }
        });

        Button speechToTextButton = findViewById(R.id.speechToTextButton);
        speechToTextButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startSpeechToText();
            }
        });
    }

    private void startSpeechToText() {
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, this.getPackageName());
        speechRecognizer.startListening(intent);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (speechRecognizer != null) {
            speechRecognizer.destroy();
        }
    }
}

這樣，當用戶點擊按鈕時，會啟動語音識別功能，并將識別結果展示在EditText中。需要注意的是，語音轉文字功能需要聯網，因此需要在AndroidManifest.xml中添加INTERNET權限。