TextToSpeech 不工作

Question

我的项目中没有声音输出——附上上面的 onInit 代码。尽管多次尝试，我无法解决它。朋友，请帮忙！ // 导入所有需要的东西 导入 android.speech.tts.TextToSpeech; 导入android.support.v7.app.AppCompatActivity； 导入android.util.Log； 导入android.view.View； 导入android.widget.Button； 导入 android.widget.EditText； 导入 android.widget.Toast； 导入 java.util.Locale； //对于这个项目，我将 Api 级别从 15 更改为 21 @TargetApi(21)

    public class TextToSpeechActivity extends AppCompatActivity
           implements TextToSpeech.OnInitListener{
       private EditText et;
       private TextToSpeech tts;
       private Button buttonspeak;
       private Button b2;
       private int result = 0;
       // onCreate method
       @Override
       protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
           // get all the view objects
           et = (EditText)findViewById(R.id.et);
           buttonspeak = (Button)findViewById(R.id.buttonspeak);
           tts = new TextToSpeech(this,this);
           // set the listener on the button
           buttonspeak.setOnClickListener(new View.OnClickListener(){
               @Override
               public void onClick(View arg0){
                  // Log.e("Hi","Are you OK?");
                  // this  is by way of a helper method
                   speakOut();
               }
           });
       }
       @Override
       public void onDestroy(){
          // closing down tts
           if (tts != null){
               tts.stop();
               tts.shutdown();}
               super.onDestroy();
           }
       @Override
       public void onInit(int status){
           if (status == TextToSpeech.SUCCESS){
       // set the language to US English
               result = tts.setLanguage(Locale.US);
           // in case the language setting is not done properly
               if(result == TextToSpeech.LANG_MISSING_DATA||result == 
       TextToSpeech.LANG_NOT_SUPPORTED ){
                   Toast.makeText(getApplicationContext(),"Language not 
    available",Toast.LENGTH_SHORT).show();
                   buttonspeak.setEnabled(false);}
            // if everything is fine
               else {buttonspeak.setEnabled(true);}}
           else { Log.e("TTS", "Initialisation failed");}}

       private void speakOut(){
          // get the string typed into the editbox
           String text = et.getText().toString();
           if (result != tts.setLanguage(Locale.US)){
               Toast.makeText(getApplicationContext(),"Enter the right
     words",Toast.LENGTH_SHORT).show();}
           else{
               tts.speak(text, TextToSpeech.QUEUE_FLUSH,null);
               // Log.e("Hi","Are you OK?");
           }

       }
    }

Answer 1

试试这个

public class AndroidTextToSpeechActivity extends Activity implements
        TextToSpeech.OnInitListener {
    /** Called when the activity is first created. */

    private TextToSpeech tts;
    private Button btnSpeak;
    private EditText txtText;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        tts = new TextToSpeech(this, this);

        btnSpeak = (Button) findViewById(R.id.btnSpeak);

        txtText = (EditText) findViewById(R.id.txtText);

        // button on click event
        btnSpeak.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                speakOut();
            }

        });
    }

    @Override
    public void onDestroy() {
        // Don't forget to shutdown tts!
        if (tts != null) {
            tts.stop();
            tts.shutdown();
        }
        super.onDestroy();
    }

    @Override
    public void onInit(int status) {

        if (status == TextToSpeech.SUCCESS) {

            int result = tts.setLanguage(Locale.US);

            if (result == TextToSpeech.LANG_MISSING_DATA
                    || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                Log.e("TTS", "This Language is not supported");
            } else {
                btnSpeak.setEnabled(true);
                speakOut();
            }

        } else {
            Log.e("TTS", "Initilization Failed!");
        }

    }

    private void speakOut() {

        String text = txtText.getText().toString();

        tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
    }
}

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