Android TTS 实战二：全世界都知道我爱你
时间：2019-07-09 10:07:01
[导读]1.简介实战而建立在实战一的基础上，只加了一个 Spinner ，给上一个 Demo 增加语言选择功能，可以使用 TTS 引擎支持的English、French、German、Italian和Span
1.简介
实战而建立在实战一的基础上，只加了一个 Spinner ，给上一个 Demo 增加语言选择功能，可以使用 TTS 引擎支持的English、French、German、Italian和Spanish这5大语言来进行相应的语音合成，并用这5种外语向她说出“我爱你”。让全世界都知道我爱你～-～wlh
2.实例
xml布局代码
Java代码
package com.example.androidttsdemo2;
import java.util.Locale;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.AdapterView.OnItemSelectedListener;
public class MainActivity extends Activity implements OnInitListener {
/**
* Called when the activity is first created.
*/
private EditText inputText = null;
private Button speakBtn = null;
private static final int REQ_TTS_STATUS_CHECK = 0;
private static final String TAG = "TTS Demo";
private TextToSpeech mTts;
private Spinner langSelect = null;
private String languages[] = {"English", "French", "German", "Italian", "Spanish"};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//检查TTS数据是否已经安装并且可用
Intent checkIntent = new Intent();
checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
startActivityForResult(checkIntent, REQ_TTS_STATUS_CHECK);
inputText = (EditText) findViewById(R.id.inputText);
speakBtn = (Button) findViewById(R.id.speakBtn);
inputText.setText("This is an example of speech synthesis.");
speakBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
mTts.speak(inputText.getText().toString(), TextToSpeech.QUEUE_ADD, null);
//朗读输入框里的内容
}
});
langSelect = (Spinner) findViewById(R.id.langSelect);
inputText.setText("I love you");
ArrayAdapteradapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, languages);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
langSelect.setAdapter(adapter);
langSelect.setSelection(0);
langSelect.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView parent, View view,
int position, long id) {
// TODO Auto-generated method stub
int pos = langSelect.getSelectedItemPosition();
int result = -1;
switch (pos) {
case 0: {
inputText.setText("I love you");
result = mTts.setLanguage(Locale.US);
}
break;
case 1: {
inputText.setText("Je t'aime");
result = mTts.setLanguage(Locale.FRENCH);
}
break;
case 2: {
inputText.setText("Ich liebe dich");
result = mTts.setLanguage(Locale.GERMAN);
}
break;
case 3: {
inputText.setText("Ti amo");
result = mTts.setLanguage(Locale.ITALIAN);
}
break;
case 4: {
inputText.setText("Te quiero");
result = mTts.setLanguage(new Locale("spa", "ESP"));
}
break;
default:
break;
}
//设置发音语言
if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED)
//判断语言是否可用
{
Log.v(TAG, "Language is not available");
speakBtn.setEnabled(false);
} else {
speakBtn.setEnabled(true);
}
}
public void onNothingSelected(AdapterView arg) {
// TODO Auto-generated method stub
}
});
}
//实现TTS初始化接口
@Override
public void onInit(int status) {
// TODO Auto-generated method stub
//TTS Engine初始化完成
if (status == TextToSpeech.SUCCESS) {
int result = mTts.setLanguage(Locale.US);
//设置发音语言
if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED)
//判断语言是否可用
{
Log.v(TAG, "Language is not available");
speakBtn.setEnabled(false);
} else {
mTts.speak("This is an example of speech synthesis.", TextToSpeech.QUEUE_ADD, null);
speakBtn.setEnabled(true);
}
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQ_TTS_STATUS_CHECK) {
switch (resultCode) {
case TextToSpeech.Engine.CHECK_VOICE_DATA_PASS:
//这个返回结果表明TTS Engine可以用
{
mTts = new TextToSpeech(this, this);
Log.v(TAG, "TTS Engine is installed!");
}
break;
case TextToSpeech.Engine.CHECK_VOICE_DATA_BAD_DATA:
//需要的语音数据已损坏
case TextToSpeech.Engine.CHECK_VOICE_DATA_MISSING_DATA:
//缺少需要语言的语音数据
case TextToSpeech.Engine.CHECK_VOICE_DATA_MISSING_VOLUME:
//缺少需要语言的发音数据
{
//这三种情况都表明数据有错,重新下载安装需要的数据
Log.v(TAG, "Need language stuff:" + resultCode);
Intent dataIntent = new Intent();
dataIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
startActivity(dataIntent);
}
break;
case TextToSpeech.Engine.CHECK_VOICE_DATA_FAIL:
//检查失败
default:
Log.v(TAG, "Got a failure. TTS apparently not available");
break;
}
} else {
//其他Intent返回的结果
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
if (mTts != null)
//activity暂停时也停止TTS
{
mTts.stop();
}
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
//释放TTS的资源
mTts.shutdown();
}
}
在选择不同的item时，为inputText设置不同语言“我爱你”对应的文本，并且为TTS实例设置语言。
为TTS引擎设置语言的API为
public int setLanguage (Locale loc)；
使用Locale这个表示语言及国家区域的类来设置语言，目前支持English、French、German、Italian和Spanish这5大语言，返回的结果为
LANG_AVAILABLE, LANG_COUNTRY_AVAILABLE, LANG_COUNTRY_VAR_AVAILABLE, LANG_MISSING_DATA 和LANG_NOT_SUPPORTED。
其中LANG_MISSING_DATA 和LANG_NOT_SUPPORTED表示无法使用当前进行设置的语言，另外的几个表示设置的语言有效。
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