android TTS 文字转语音

public class MainActivity extends AppCompatActivity implements TextToSpeech.OnInitListener {

    private TextToSpeech textToSpeech = null;

    private EditText editText;
    private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editText = findViewById(R.id.text1);
        button = findViewById(R.id.btn_read);
        textToSpeech = new TextToSpeech(this, this);
    }


    public void read(View view) {
        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
            Bundle bundle = new Bundle();
            bundle.putInt(TextToSpeech.Engine.KEY_PARAM_STREAM, AudioManager.STREAM_NOTIFICATION);//设置音频通道
            textToSpeech.speak(editText.getText().toString(), TextToSpeech.QUEUE_FLUSH, bundle,"1");
        }
    }

    

    @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
    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
    }
}