Question

我目前正在使用语音识别API为群组项目开发应用。我实际上是在一个月前首次实现它，从那时起它运作良好。它非常简单，只需一个图像按钮即可在单击时启动语音识别活动。然后第一个结果由app“分析”（switch语句检查它包含的单词）。

我遇到问题的部分是，当我星期四在手机上安装应用程序时，它工作正常。但是从昨天起它就不再起作用了！单击该按钮时，语音识别界面打开，它会记录我告诉它的内容，然后屏幕变黑并崩溃。

这是我运行应用程序时得到的logcat：

03-03 16:16:05.365: E/AndroidRuntime(12262): FATAL EXCEPTION: main
03-03 16:16:05.365: E/AndroidRuntime(12262): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1234, result=-1, data=Intent { (has extras) }} to activity {com.brice/com.brice.Main}: java.lang.NullPointerException
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.app.ActivityThread.deliverResults(ActivityThread.java:2992)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3035)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.app.ActivityThread.access$1100(ActivityThread.java:127)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1189)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.os.Looper.loop(Looper.java:137)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.app.ActivityThread.main(ActivityThread.java:4507)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at java.lang.reflect.Method.invokeNative(Native Method)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at java.lang.reflect.Method.invoke(Method.java:511)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at dalvik.system.NativeStart.main(Native Method)
03-03 16:16:05.365: E/AndroidRuntime(12262): Caused by: java.lang.NullPointerException
03-03 16:16:05.365: E/AndroidRuntime(12262):    at com.brice.Main.onActivityResult(Main.java:310)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.app.Activity.dispatchActivityResult(Activity.java:4649)
03-03 16:16:05.365: E/AndroidRuntime(12262):    at android.app.ActivityThread.deliverResults(ActivityThread.java:2988)
03-03 16:16:05.365: E/AndroidRuntime(12262):    ... 11 more

我猜结果= -1是问题的所在，但我不知道如何处理......

以下是处理语音识别部分的代码部分：

 /**
 * Fire an intent to start the voice recognition activity.
 */
private void startVoiceRecognitionActivity() {
    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 1); //In order to only get the best result
    startActivityForResult(intent, REQUEST_CODE);
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    boolean success=false; //To check if the STT worked properly

    if (requestCode == REQUEST_CODE && resultCode == RESULT_OK)
    {
        // Populate the wordsList with the String value the recognition engine thought it heard
        ArrayList<String> matches = data.getStringArrayListExtra(
                RecognizerIntent.EXTRA_RESULTS);
        //Outputs the message 
        voiceIn.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, matches));
        success=true;
    }

    //Get the result as a String
    first = (String) voiceIn.getItemAtPosition(0);

    super.onActivityResult(requestCode, resultCode, data);
    if (success){
        if (first.contains("slideshow")){
            loadSlideshow();
        }

        else{
            messageTo = first; //Take the speech as the message
            //Post the message to the recipient
            Functions.postData(messageTo, recipient);
            //Notify Granny that the message is sent
            //Toast.makeText(Main.this, "Message Sent", Toast.LENGTH_LONG).show(); //Text Notifier
            tts.speak("Your message has been sent", TextToSpeech.QUEUE_ADD, null); //Speech Notifier
        }
    }

    else{ //If the Speech to Text had a problem, notify the user
        tts.speak("There was a problem with the Speech Recognition Service, you should try again", TextToSpeech.QUEUE_ADD, null); //Speech Notifier
    }

过去一个月一切都运行良好，昨天突然停止了（我确实更改了我的机器上的代码，但没有在我的手机上安装新版本，所以手机在一周前安装了相同的版本工作！）

非常感谢..

Answer 1

03-03 16:16:05.365: E/AndroidRuntime(12262): Caused by: java.lang.NullPointerException
03-03 16:16:05.365: E/AndroidRuntime(12262):    at        
        com.brice.Main.onActivityResult(Main.java:310)

问题出在Main.java文件的第310行，方法为onActivityResult。如果您有机会，可以仅发送第310行作为评论吗？

另外，对super.onActivityResult(requestCode, resultCode, data);的调用应该是您onActivityResult方法中的第一个调用，因此请将该行打开。这可能不是你的崩溃，但它可能会导致问题。

语音识别在录制后崩溃应用程序

1 个答案: