Android 系統裡内置了PicoTTS,對中文的支援很不給力。但是我們可以安裝“訊飛語記”TTS,中文就不是問題了。
首先介紹下核心方法speak()及其參數
public int speak(final String text, final int queueMode, final HashMap<String, String> params) {
return runAction(new Action<Integer>()
text 需要轉成語音的文字
queueMode 隊列方式:
QUEUE_ADD:播放完之前的語音任務後才播報本次内容
QUEUE_FLUSH:丢棄之前的播報任務,立即播報本次内容
params 設定TTS參數,可以是null。
KEY_PARAM_STREAM:音頻通道,可以是:STREAM_MUSIC、STREAM_NOTIFICATION、STREAM_RING等
KEY_PARAM_VOLUME:音量大小,0-1f
傳回值:int SUCCESS = 0,int ERROR = -1。
以下是Demo代碼
package com.interjoy.demoqrcode;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
private Button btn_to_speak;
private TextToSpeech mSpeech;
private EditText et_input;
private static final String TAG_TTS = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
private <T> T f(int resId) {
return (T) findViewById(resId);
}
private void init() {
btn_to_speak = f(R.id.btn_to_speak);
et_input = f(R.id.et_input);
speechInit();
btn_to_speak.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String text = et_input.getText().toString();
if (TextUtils.isEmpty(text)) text = "請輸入要測試的内容";
playTTS(text);
}
});
}
/**
* 初始化TextToSpeech,在onCreate中調用
*/
private void speechInit() {
if (mSpeech != null) {
mSpeech.stop();
mSpeech.shutdown();
mSpeech = null;
}
// 建立TTS對象
mSpeech = new TextToSpeech(MainActivity.this, new TTSListener());
}
/**
* 将文本用TTS播放
*
* @param str 播放的文本内容
*/
private void playTTS(String str) {
if (mSpeech == null) mSpeech = new TextToSpeech(this, new TTSListener());
mSpeech.speak(str, TextToSpeech.QUEUE_FLUSH, null);
Log.i(TAG_TTS, "播放語音為:" + str);
}
private final class TTSListener implements TextToSpeech.OnInitListener {
@Override
public void onInit(int status) {
Log.e(TAG_TTS, "初始化結果:" + (status == TextToSpeech.SUCCESS));
int result = mSpeech.setLanguage(Locale.CHINESE);
//如果傳回值為-2,說明不支援這種語言
Log.e(TAG_TTS, "是否支援該語言:" + (result != TextToSpeech.LANG_NOT_SUPPORTED));
}
}
@Override
protected void onDestroy() {
if (mSpeech != null) {
mSpeech.stop();
mSpeech.shutdown();
mSpeech = null;
}
super.onDestroy();
}
}
注意:1.安裝訊飛語記之後,需要設定為把它設定為預設TTS,就像安裝搜狗輸入法後要設定手機輸入法預設為搜狗才能用一樣。我使用華為榮耀5A具體設定步驟:設定->輔助功能->文字轉語音(TTS)輸出->訊飛語記
2.不用時需要及時關閉釋放tts對象 mSpeech.shutdown();