我已经查看了同样问题的其他问题，但由于此错误特定于每个人的个人代码，因此它们没有多大帮助。我收到以下错误：
（我无法上传图片，Eclipse也不会让我复制+粘贴错误，所以因为我很懒，这里是一个Gyazo：CLICK ME）
这是我的代码：
Mikey.java（忽略愚蠢的名字）
package com.jamco.apps.mikey;
import java.util.ArrayList;
import java.util.Locale;
import java.util.Random;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.tts.TextToSpeech;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
public class Mikey extends Activity implements RecognitionListener, OnClickListener, TextToSpeech.OnInitListener {
protected static final int REQUEST_OK = 1;
private ImageButton btn;
private TextToSpeech tts;
private TextView txt;
private String thoughts;
private ArrayList<String> thingsYouSaid;
private Integer numberOfThingsSaid = 0;
@Override
public void onDestroy() {
//Don't forget to shutdown tts!
if (tts != null) {
tts.stop();
tts.shutdown();
}
super.onDestroy();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mikey);
btn = (ImageButton) findViewById(R.id.imageButton1);
txt = (TextView) findViewById(R.id.textView1);
tts = new TextToSpeech(this, this);
btn.setOnClickListener(this);
}
@Override
public void onClick(View v) {
Intent i = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
i.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US");
try {
startActivityForResult(i, REQUEST_OK);
} catch (Exception e) {
Toast.makeText(this, "Error initializing speech to text engine.", Toast.LENGTH_LONG).show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode==REQUEST_OK && resultCode==RESULT_OK) {
numberOfThingsSaid += 1;
ArrayList<String> youJustSaid = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
((TextView)findViewById(R.id.textView1)).setText("You said: " + youJustSaid);
thingsYouSaid.add(youJustSaid.get(0).toString());
think();
}
}
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = tts.setLanguage(Locale.UK);
if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "This Language is not supported");
} else {
btn.setEnabled(true);
}
} else {
Log.e("TTS", "Initilization Failed!");
}
}
@Override
public void onBeginningOfSpeech() {
//TODO Auto-generated method stub
}
@Override
public void onBufferReceived(byte[] buffer) {
//TODO Auto-generated method stub
}
@Override
public void onEndOfSpeech() {
//TODO Auto-generated method stub
}
@Override
public void onError(int error) {
//TODO Auto-generated method stub
}
@Override
public void onEvent(int eventType, Bundle params) {
//TODO Auto-generated method stub
}
@Override
public void onPartialResults(Bundle partialResults) {
//TODO Auto-generated method stub
}
@Override
public void onReadyForSpeech(Bundle params) {
//TODO Auto-generated method stub
}
@Override
public void onResults(Bundle results) {
//TODO Auto-generated method stub
}
@Override
public void onRmsChanged(float rmsdB) {
//TODO Auto-generated method stub
}
private void speak(String speech) {
tts.speak(speech, TextToSpeech.QUEUE_FLUSH, null);
Toast.makeText(this, speech, Toast.LENGTH_LONG).show();
}
private void think() {
if (thingsYouSaid.get(numberOfThingsSaid) == "Hello" || thingsYouSaid.get(numberOfThingsSaid) == "Hi") {
switch (randInt(0, 2)) {
case 0:
speak("Hello");
case 1:
speak("Hello");
case 2:
speak(thingsYouSaid.get(numberOfThingsSaid));
}
}
}
public static int randInt(int min, int max) {
//Usually this can be a field rather than a method variable
Random rand = new Random();
//nextInt is normally exclusive of the top value,
//so add 1 to make it inclusive
int randomNum = rand.nextInt((max - min) + 1) + min;
return randomNum;
}
}
（对不起，如果格式不好，我是这个网站的新手。）
这是我的活动xml：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".Mikey" >
<ImageButton
android:id="@+id/imageButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="42dp"
android:src="@drawable/ic_launcher" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="119dp"
android:text="Click the Microphone and ask a question!" />
</RelativeLayout>
Stack-trace告诉我转到这一行：
thingsYouSaid.add(youJustSaid.get(0).toString());
然而，经过大量的反复试验后，我无法弄清楚它有什么问题。我尝试添加.toString（）只是为了看它是否神奇地修复了一些东西，但没有。
希望有人能够帮我解决这个问题：）
圣诞快乐！
答案 0 :(得分：0)
thingsYouSaid未在代码中的任何位置实例化。你应该实例化它（你可以在声明时这样做）：
ArrayList<String> thingsYouSaid = new ArrayList<String>();
答案 1 :(得分：0)
我没有看到您正在初始化thingsYouSaid;的任何地方。你声明它像这样
private ArrayList<String> thingsYouSaid;
但你没有初始化它。尝试将其更改为
private ArrayList<String> thingsYouSaid = new ArrayList<String>();
修改
我没有与TextToSpeech合作，但我可以告诉您，您在这里错误地比较String
thingsYouSaid.get(numberOfThingsSaid) == "Hello" || thingsYouSaid.get(numberOfThingsSaid) == "Hi")
在think()内。您应该使用equals()来比较String s。
if ((("Hello".equals(thingsYouSaid.get(numberOfThingsSaid))
|| ("Hi".equals(thingsYouSaid.get(numberOfThingsSaid))))
另外，您应该在每个break;的末尾添加case语句，否则即使逻辑与第一个case语句之一匹配，逻辑也会失效。