如何在Android應用中建立文字轉語音功能?
此示例演示瞭如何在Android應用中建立文字轉語音功能。
步驟1 − 在Android Studio中建立一個新專案,轉到檔案 ⇒ 新建專案,並填寫所有必需的詳細資訊以建立新專案。
步驟2 − 將以下程式碼新增到res/layout/activity_main.xml。
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center" tools:context=".MainActivity"> <EditText android:id="@+id/editText" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="16dp" android:hint="Enter Text" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Pitch" android:textSize="16sp" /> <SeekBar android:id="@+id/seekBarPitch" android:layout_width="200dp" android:layout_height="wrap_content" android:progress="50" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Speed" android:textSize="16sp" /> <SeekBar android:id="@+id/seekBarSpeed" android:layout_width="200dp" android:layout_height="wrap_content" android:layout_marginBottom="16dp" android:progress="50" /> <Button android:id="@+id/btnSpeak" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:enabled="false" android:text="Say it!" /> </LinearLayout>
步驟3 − 將以下程式碼新增到src/MainActivity.java
import android.speech.tts.TextToSpeech; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.SeekBar; import java.util.Locale; public class MainActivity extends AppCompatActivity { private TextToSpeech textToSpeech; private EditText editText; private SeekBar seekBarPitch; private SeekBar seekBarSpeed; private Button buttonSpeak; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); buttonSpeak = findViewById(R.id.btnSpeak); textToSpeech = new TextToSpeech(this, new TextToSpeech.OnInitListener() { @Override public void onInit(int status) { if (status == TextToSpeech.SUCCESS) { int result = textToSpeech.setLanguage(Locale.ENGLISH); if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) { Log.e("TextToSpeech", "Language not supported"); } else { buttonSpeak.setEnabled(true); } } else { Log.e("TextToSpeech", "Initialization failed"); } } }); editText = findViewById(R.id.editText); seekBarPitch = findViewById(R.id.seekBarPitch); seekBarSpeed = findViewById(R.id.seekBarSpeed); buttonSpeak.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { speak(); } }); } private void speak() { String text = editText.getText().toString(); float pitch = (float) seekBarPitch.getProgress() / 50; if (pitch < 0.1) pitch = 0.1f; float speed = (float) seekBarSpeed.getProgress() / 50; if (speed < 0.1) speed = 0.1f; textToSpeech.setPitch(pitch); textToSpeech.setSpeechRate(speed); textToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null); } @Override protected void onDestroy() { if (textToSpeech != null) { textToSpeech.stop(); textToSpeech.shutdown(); } super.onDestroy(); } }
步驟4 − 將以下程式碼新增到androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample"> <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"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
讓我們嘗試執行您的應用程式。我假設您已將您的實際Android移動裝置連線到您的計算機。要從Android Studio執行應用程式,請開啟專案中的一個活動檔案,然後單擊執行 工具欄中的圖示。選擇您的移動裝置作為選項,然後檢查您的移動裝置,它將顯示您的預設螢幕 –
點選 這裡 下載專案程式碼。
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