在Android中使用TextToSpeech需要以下步驟：

1. 在AndroidManifest.xml文件中添加以下權限：

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />

2. 在Activity或Fragment中初始化TextToSpeech對象：

private TextToSpeech textToSpeech;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textToSpeech = new TextToSpeech(this, new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = textToSpeech.setLanguage(Locale.US); // 設置語言為英語
if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "Language not supported");
}
} else {
Log.e("TTS", "Initialization failed");
}
}
});
}

3. 調用TextToSpeech對象的speak方法進行文本轉語音：

textToSpeech.speak("Hello, World!", TextToSpeech.QUEUE_FLUSH, null);

注意，在使用完TextToSpeech后要記得在Activity或Fragment的onDestroy方法中釋放TextToSpeech資源：

@Override
protected void onDestroy() {
if (textToSpeech != null) {
textToSpeech.stop();
textToSpeech.shutdown();
}
super.onDestroy();
}

這樣就可以在Android中使用TextToSpeech進行文本轉語音了。