我正在尝试在Android上使用语音识别。以下是我的代码。
这是负责启动语音识别的Button的代码。 speak.setOnClickListener（new OnClickListener（）{
@Override
public void onClick(View v)
{
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "City Name Please?");
startActivityForResult(intent, REQUEST_CODE);
}});
这是一个onActivityResult方法。
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
ArrayList<String> matches_Text = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
Log.v("Results", matches_Text.get(0).toString());
//Update EditText cityname here
String normalized_cityname = matches_Text.get(0).toString().trim();
normalized_cityname = normalized_cityname.replace(" ","%20");
try {
getResponseString("http://api.openweathermap.org/data/2.5/weather?q="+normalized_cityname+"&units=metric", true);
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
}
代码工作正常，但我现在遇到两个问题，我担心它们可能有关系。
EditText更新cityname实例cityname.setText(matches_Text.get(0).toString())中的文字，则会导致应用崩溃。speak按钮，则会显示Google语音对话框，但会显示can't reacg google at the moment。请建议我该怎么办？
还添加了getResponseString方法。
public void getResponseString(String Url, boolean IsCalledOnVoiceInput) throws IOException, JSONException {
String temperature="";
String city;
String country;
String weather_main, weather_description;
MyAsyncTask xxx = new MyAsyncTask();
try {
String responseString = xxx.execute(Url).get();
TextView txtTemp = (TextView)findViewById(R.id.txt_temp);
TextView txtCity = (TextView)findViewById(R.id.txt_CityName);
TextView txtWeatherMain = (TextView)findViewById(R.id.textView2);
TextView txtWeatherDescription = (TextView)findViewById(R.id.textView3);
JSONObject reader = new JSONObject(responseString);
JSONObject main = reader.getJSONObject("main");
temperature = main.getString("temp");
Log.v("temperarure",temperature);
city = reader.getString("name");
Log.v("city",city);
JSONObject sys = reader.getJSONObject("sys");
country = sys.getString("country");
Log.v("country",country);
JSONArray weather = reader.getJSONArray("weather");
JSONObject weather_obj = weather.getJSONObject(0);
weather_main = weather_obj.getString("main");
weather_description = weather_obj.getString("description");
txtTemp.setText(temperature+" °C");
txtCity.setText(city+" ("+country+")");
txtWeatherMain.setText(weather_main);
txtWeatherDescription.setText(weather_description);
if(IsCalledOnVoiceInput)
Speak_Weather_Data(city,temperature,weather_main,weather_description);
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
} catch (JSONException e){
e.printStackTrace();
}
}
这是日志输出
12-24 13:36:06.050 12164-12164/samarth.learning.http D/dalvikvm﹕ Late-enabling CheckJNI
12-24 13:36:06.300 12164-12164/samarth.learning.http D/Network﹕ Network
12-24 13:36:06.300 12164-12164/samarth.learning.http V/Lat﹕ 28.8331443
12-24 13:36:06.300 12164-12164/samarth.learning.http V/Long﹕ 78.7717138
12-24 13:36:06.360 12164-12164/samarth.learning.http D/libEGL﹕ loaded /vendor/lib/egl/libEGL_adreno.so
12-24 13:36:06.370 12164-12164/samarth.learning.http D/libEGL﹕ loaded /vendor/lib/egl/libGLESv1_CM_adreno.so
12-24 13:36:06.380 12164-12164/samarth.learning.http D/libEGL﹕ loaded /vendor/lib/egl/libGLESv2_adreno.so
12-24 13:36:06.380 12164-12164/samarth.learning.http I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:316>: EGL 1.4 QUALCOMM build: (CL4169980)
OpenGL ES Shader Compiler Version: 17.01.10.SPL
Build Date: 11/04/13 Mon
Local Branch:
Remote Branch:
Local Patches:
Reconstruct Branch:
12-24 13:36:06.430 12164-12164/samarth.learning.http D/OpenGLRenderer﹕ Enabling debug mode 0
12-24 13:36:06.531 12164-12164/samarth.learning.http E/SpannableStringBuilder﹕ SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
12-24 13:36:06.531 12164-12164/samarth.learning.http E/SpannableStringBuilder﹕ SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
12-24 13:36:08.232 12164-12164/samarth.learning.http W/IInputConnectionWrapper﹕ showStatusIcon on inactive InputConnection
12-24 13:36:18.844 12164-12164/samarth.learning.http V/Results﹕ new delhi
12-24 13:36:18.844 12164-12164/samarth.learning.http D/AndroidRuntime﹕ Shutting down VM
12-24 13:36:18.844 12164-12164/samarth.learning.http W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x4157c8b0)
12-24 13:36:18.854 12164-12164/samarth.learning.http E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1234, result=-1, data=Intent { (has extras) }} to activity {samarth.learning.http/samarth.learning.http.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.deliverResults(ActivityThread.java:3462)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3505)
at android.app.ActivityThread.access$1100(ActivityThread.java:150)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1346)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:5225)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:741)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at samarth.learning.http.MainActivity.onActivityResult(MainActivity.java:160)
at android.app.Activity.dispatchActivityResult(Activity.java:5322)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3458)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3505)
at android.app.ActivityThread.access$1100(ActivityThread.java:150)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1346)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:5225)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:741)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
at dalvik.system.NativeStart.main(Native Method)
12-24 13:36:22.558 12164-12164/samarth.learning.http I/Process﹕ Sending signal. PID: 12164 SIG: 9
答案 0 :(得分：0)
我认为matches_Text有时候是NULL？！如何添加
if(matches_Text == null){
Log.v("Results","matches_Text is NULL!");
return;
}
在ArrayList<String> matches_Text = da...