我将文本转语音应用于我的应用程序(如所示过程 here )。它在大多数设备上都能完美运行。但在某些设备(例如 LG Optimus G、GK、L3 II 和 Sky IM-A800S)中，应用 Activity 意外停止并出现以下错误:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp.appname/com.myapp.appname.ContentView}: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.speech.tts.engine.CHECK_TTS_DATA }
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2067)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2092)
at android.app.ActivityThread.access$600(ActivityThread.java:138)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1203)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4827)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.speech.tts.engine.CHECK_TTS_DATA }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1568)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1439)
at android.app.Activity.startActivityForResult(Activity.java:3351)
at android.app.Activity.startActivityForResult(Activity.java:3312)
at android.support.v4.app.FragmentActivity.startActivityForResult(Unknown Source)
at viettien.kadict.ContentView.onCreate(Unknown Source)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1084)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2031)
... 11 more

这是我的简短代码:

private static final int MY_DATA_CHECK_CODE = 4;
private TextToSpeech tts;

onCreate()
    //Fire off an intent to check if a TTS engine is installed
    Intent checkIntent = new Intent();
    checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
    startActivityForResult(checkIntent, MY_DATA_CHECK_CODE);

OnButtonClick
    SpeakText("Here is the word spoken");

onDestroy()
    tts.stop();
    tts.shutdown();

onActivityResult
    case MY_DATA_CHECK_CODE:

        if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS)  
        {
            // success, create the TTS instance
            tts = new TextToSpeech(this, this);
        }
        else
        {
            // missing data, install it
            Intent installIntent = new Intent();
            installIntent.setAction(
                    TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);  
            startActivity(installIntent);
        }

        break;

onInit
    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 {

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

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

这是与 ROM 相关的问题还是我的代码有问题？

非常感谢帮助。

最佳答案

错误表明名为 android.speech.tts.engine.CHECK_TTS_DATA 的 Activity 尚未作为 ROM 的一部分导出(注意:LG ROM 已为人所知有问题。)要防止此错误，请执行以下操作:

try {
   Intent intent = new Intent(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
   intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
   context.startActivity(intent);   
} catch (ActivityNotFoundException e) {
   Log.e("Oops! The function is not available in your device." + e.fillInStackTrace());
}

您可以使用的另一种方法是先检查包是否可调用，例如:

public static boolean isActivityCallable(Context context, String packageName, String className) {
    final Intent intent = new Intent();
    intent.setClassName(packageName, className);        
    List<ResolveInfo> list = getPackageManager(context).queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
    return list.size() > 0;
}

packageName 是 TextToSpeech.Engine 而 className 是 TextToSpeech.Engine.ACTION_CHECK_TTS_DATA

关于java - Android 文本转语音抛出 ActivityNotFoundException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25830230/