Android 文字转语音，语音消息播放之TextToSpeech

Posted 2023-02-25 XRFirst

public class MainActivity extends AppCompatActivity  implements View.OnClickListener, TextToSpeech.OnInitListener 
    private Button speechBtn; // 按钮控制开始朗读
    private EditText speechTxt; // 需要朗读的内容
    private TextToSpeech textToSpeech; // TTS对象
    @Override
    public void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        speechBtn = (Button) findViewById(R.id.btn_read);
        speechBtn.setOnClickListener(this);
        speechTxt = (EditText) findViewById(R.id.editText);
        textToSpeech = new TextToSpeech(this, this); // 参数Context,TextToSpeech.OnInitListener
    
    /**
     * 用来初始化TextToSpeech引擎
     * status:SUCCESS或ERROR这2个值
     * setLanguage设置语言，帮助文档里面写了有22种
     * TextToSpeech.LANG_MISSING_DATA：表示语言的数据丢失。
     * TextToSpeech.LANG_NOT_SUPPORTED:不支持
     */
    @Override
    public void onInit(int status) 
        if (status == TextToSpeech.SUCCESS) 
            int result = textToSpeech.setLanguage(Locale.CHINA);
            if (result == TextToSpeech.LANG_MISSING_DATA
                    || result == TextToSpeech.LANG_NOT_SUPPORTED) 
                Toast.makeText(this, "数据丢失或不支持", Toast.LENGTH_SHORT).show();
            
        
    
    @Override
    public void onClick(View v) 
        if (textToSpeech != null && !textToSpeech.isSpeaking()) 
          // 设置音调，值越大声音越尖（女生），值越小则变成男声,1.0是常规
            textToSpeech.setPitch(0.5f);
          //设定语速 ，默认1.0正常语速
           textToSpeech.setSpeechRate(1.5f);
          //朗读，注意这里三个参数的added in API level 4   四个参数的added in API level 21
            textToSpeech.speak(speechTxt.getText().toString(), TextToSpeech.QUEUE_FLUSH, null);
        
    
    @Override
    protected void onStop() 
        super.onStop();
        textToSpeech.stop(); // 不管是否正在朗读TTS都被打断
        textToSpeech.shutdown(); // 关闭，释放资源