Java 从单独的类调用文本到语音到活动类

我正在尝试创建一个类，可以从任何活动调用该类来从EditText框中说出文本。当我运行当前拥有的代码时，它会播放警报声音，但随后无法播放文本到语音内容。我需要改变什么才能让文本也播放？我知道activity layout XML代码是正确的，因为文本到语音代码在直接位于activity类中时有效。我四处寻找了一个解决方案，但没有其他地方概述了如何从线程上下文中实现这一点

我已将我的代码包括在下面：

在AircraftMain.java上

View.OnClickListener speakBtnOnClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View arg0) {

            String toSpeak = textToSpeak.getText().toString();
            TextToSpeak speak = new TextToSpeak(AircraftMain.this, toSpeak);
            speak.run();

        }
    };

import android.app.Activity;
import android.media.MediaPlayer;
import android.speech.tts.TextToSpeech;
import java.util.Locale;

public class TextToSpeak implements Runnable {

    private Activity activity;
    private static String text;
    private static TextToSpeech talk;

    public TextToSpeak(Activity activity, String toSpeak) {
        this.activity = activity;
        text = toSpeak;
    }

    public void run() {

        talk = new TextToSpeech(activity, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if(status != TextToSpeech.ERROR) {
                    talk.setLanguage(Locale.UK);
                }
            }
        });

        talk.addEarcon("Attention", "com.kieronmc.aircraftgps", R.raw.warning_beep);
        talk.playEarcon("Attention", QUEUE_ADD,null);    
        talk.setLanguage(Locale.UK);
        talk.speak(text, TextToSpeech.QUEUE_ADD, null);
    }
}

TextToSpeak.java

View.OnClickListener speakBtnOnClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View arg0) {

            String toSpeak = textToSpeak.getText().toString();
            TextToSpeak speak = new TextToSpeak(AircraftMain.this, toSpeak);
            speak.run();

        }
    };

import android.app.Activity;
import android.media.MediaPlayer;
import android.speech.tts.TextToSpeech;
import java.util.Locale;

public class TextToSpeak implements Runnable {

    private Activity activity;
    private static String text;
    private static TextToSpeech talk;

    public TextToSpeak(Activity activity, String toSpeak) {
        this.activity = activity;
        text = toSpeak;
    }

    public void run() {

        talk = new TextToSpeech(activity, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if(status != TextToSpeech.ERROR) {
                    talk.setLanguage(Locale.UK);
                }
            }
        });

        talk.addEarcon("Attention", "com.kieronmc.aircraftgps", R.raw.warning_beep);
        talk.playEarcon("Attention", QUEUE_ADD,null);    
        talk.setLanguage(Locale.UK);
        talk.speak(text, TextToSpeech.QUEUE_ADD, null);
    }
}

---

请尝试此代码，它应该可以工作：

1） 创建一个文本到语音初始值设定项，如下所示：

public class TextToSpeechInitializer{

private Context context;
private static TextToSpeech talk;
private TextToSpeechIniListener callback;
private Locale locale;

public TextToSpeechInitializer(Context context , Locale locale , TextToSpeechIniListener l) {
    this.context = context;
    if(l != null) {
        callback = l;
    }
    this.locale = locale;
    initialize();
}


private void initialize() {
    talk = new TextToSpeech(context, new TextToSpeech.OnInitListener() {
        @Override
        public void onInit(int status) {
            if (status == TextToSpeech.SUCCESS) {
                talk.setLanguage(locale); //TODO: Check if locale is available before setting.
                callback.onSucces(talk);
            }else{
                callback.onFailure(talk);
                Log.e("TTS","TextToSpeechInitializeError");
            }
        }
    });
}
}

2） 上述初始值设定项类调用此接口类以通知以下活动（TTS成功或失败）：

3） 活动

布局demo7.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">

<Button
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/b"
    android:text="speak"/>

</LinearLayout>

我不是在最后一行代码中实现它吗<代码>talk.speak（text，TextToSpeech.QUEUE\u ADD，null）我认为您创建的mediaPlayer正在阻止speak方法执行应该执行的操作。您可以使用此处提供的AddEarcon和PlayEarcon方法，而不是使用mediaPlayer启动警报声音。您确定在尝试talk之前已调用onInit（）。说话？我已将代码更改为使用AddEarcon和PlayEarcon，现在没有声音播放。似乎有声音出来的问题。可能没有调用onInit（）方法。如何更改代码以确保调用onInit（）？我遇到的错误是没有绑定到TTS引擎。e、 g.

W/TextToSpeech:playEarcon失败：未绑定到TTS引擎；W/TextToSpeech:setLanguage失败：未绑定到TTS引擎；W/TextToSpeech:speak失败：未绑定到TTS引擎不要忘记将R.raw.androidcalm更改为原始资源文件。不应使用活动上下文。这将造成潜在的泄漏