前言: Android提供了自动朗读支持。可以对指定文本内容进行朗读,从而发生声音;还允许把文本对应的音频录制成音频文件,方便以后播放。Android的自动朗读主要通过TextToSpeech来完成,构造器如:TextToSpeech(Context context, TextToSpeech.OnInitListennet listener);当创建TextToSpeech对象时,必须先提供一个OnInitListener监听器——负责监听TextToSpeech的初始化结果。
效果图如下:
使用TextToSpeech的步骤如下:
1、创建TextToSpeech对象,创建时传入OnInitListener监听器监听示范创建成功。
2、设置TextToSpeech所使用语言国家选项,通过返回值判断TTS是否支持该语言、国家选项。
3、调用speak()或synthesizeToFile方法。
4、关闭TTS,回收资源。
布局文件:
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<? xml version = "1.0" encoding = "utf-8" ?> < LinearLayout android:layout_width = "match_parent" android:layout_height = "match_parent" android:orientation = "vertical" > < EditText android:id = "@+id/input_text" android:layout_marginTop = "20dp" android:layout_width = "match_parent" android:layout_height = "wrap_content" /> < LinearLayout android:layout_marginTop = "10dp" android:layout_width = "match_parent" android:layout_height = "wrap_content" > < Button android:id = "@+id/speech" android:text = "Speech" android:layout_width = "wrap_content" android:layout_weight = "1" android:layout_height = "wrap_content" /> < Button android:id = "@+id/record" android:text = "Record" android:layout_weight = "1" android:layout_width = "wrap_content" android:layout_height = "wrap_content" /> </ LinearLayout > </ LinearLayout > |
Activity文件
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public class SpeechActivity extends AppCompatActivity { private EditText input; private Button speech,record; private TextToSpeech textToSpeech; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_speech); textToSpeech = new TextToSpeech( this , new TextToSpeech.OnInitListener() { @Override public void onInit( int status) { if (status == textToSpeech.SUCCESS) { int result = textToSpeech.setLanguage(Locale.CHINA); if (result != TextToSpeech.LANG_COUNTRY_AVAILABLE && result != TextToSpeech.LANG_AVAILABLE){ Toast.makeText(SpeechActivity. this , "TTS暂时不支持这种语音的朗读!" , Toast.LENGTH_SHORT).show(); } } } }); input = (EditText) findViewById(R.id.input_text); speech = (Button) findViewById(R.id.speech); record = (Button) findViewById(R.id.record); speech.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View view) { textToSpeech.speak(input.getText().toString(), TextToSpeech.QUEUE_ADD, null ); } }); record.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View view) { String inputText = input.getText().toString(); HashMap<String, String> myHashRender = new HashMap<>(); myHashRender.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, inputText); textToSpeech.synthesizeToFile(inputText, myHashRender, "/mnt/sdcard/my_recorder_audios/sound.wav" ); Toast.makeText(SpeechActivity. this , "声音记录成功。" , Toast.LENGTH_SHORT).show(); } }); } @Override protected void onDestroy() { if (textToSpeech != null ) textToSpeech.shutdown(); super .onDestroy(); } } |
这里我们使用的是中文,int result = textToSpeech.setLanguage(Locale.CHINA);你也可以根据自己的需求更改为其他支持的语言。
最后在AndroidManifest.xml中加入权限:
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< uses-permission android:name = "android.permission.WRITE_EXTERNAL_STORAGE" /> < uses-permission android:name = "android.permission.READ_EXTERNAL_STORAGE" /> |
总结:通过使用Android提供的TTS,我们可以对指定文本内容进行朗读,从而发生声音;还允许把文本对应的音频录制成音频文件,保存到本地短链接。