android语音命令做httppost
我有这个语音识别的例子。 我为httppost命令添加了一些代码。 我想，当我说DOG这个词来制作一个httppost。 一切正常，但是当我说DOG这个词的时候，它应该做我的httppost，我得到这些错误：
05-25 21:31:24.889: D/AndroidRuntime(15191): Shutting down VM 05-25 21:31:24.889: W/dalvikvm(15191): threadid=1: thread exiting with uncaught exception (group=0x40aab300) 05-25 21:31:24.909: E/AndroidRuntime(15191): FATAL EXCEPTION: main 05-25 21:31:24.909: E/AndroidRuntime(15191): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1001, result=-1, data=Intent { (has extras) }} to activity {com.rakesh.voicerecognitionexample/com.rakesh.voicerecognitionexample.VoiceRecognitionActivity}: android.os.NetworkOnMainThreadException 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.app.ActivityThread.deliverResults(ActivityThread.java:3267) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3310) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.app.ActivityThread.access$1100(ActivityThread.java:142) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.os.Handler.dispatchMessage(Handler.java:99) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.os.Looper.loop(Looper.java:137) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.app.ActivityThread.main(ActivityThread.java:4931) 05-25 21:31:24.909: E/AndroidRuntime(15191): at java.lang.reflect.Method.invokeNative(Native Method) 05-25 21:31:24.909: E/AndroidRuntime(15191): at java.lang.reflect.Method.invoke(Method.java:511) 05-25 21:31:24.909: E/AndroidRuntime(15191): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 05-25 21:31:24.909: E/AndroidRuntime(15191): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558) 05-25 21:31:24.909: E/AndroidRuntime(15191): at dalvik.system.NativeStart.main(Native Method) 05-25 21:31:24.909: E/AndroidRuntime(15191): Caused by: android.os.NetworkOnMainThreadException 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117) 05-25 21:31:24.909: E/AndroidRuntime(15191): at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 05-25 21:31:24.909: E/AndroidRuntime(15191): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 05-25 21:31:24.909: E/AndroidRuntime(15191): at java.net.InetAddress.getAllByName(InetAddress.java:214) 05-25 21:31:24.909: E/AndroidRuntime(15191): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137) 05-25 21:31:24.909: E/AndroidRuntime(15191): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) 05-25 21:31:24.909: E/AndroidRuntime(15191): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) 05-25 21:31:24.909: E/AndroidRuntime(15191): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360) 05-25 21:31:24.909: E/AndroidRuntime(15191): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) 05-25 21:31:24.909: E/AndroidRuntime(15191): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 05-25 21:31:24.909: E/AndroidRuntime(15191): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) 05-25 21:31:24.909: E/AndroidRuntime(15191): at com.rakesh.voicerecognitionexample.VoiceRecognitionActivity.cici(VoiceRecognitionActivity.java:157) 05-25 21:31:24.909: E/AndroidRuntime(15191): at com.rakesh.voicerecognitionexample.VoiceRecognitionActivity.onActivityResult(VoiceRecognitionActivity.java:113) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.app.Activity.dispatchActivityResult(Activity.java:5192) 05-25 21:31:24.909: E/AndroidRuntime(15191): at android.app.ActivityThread.deliverResults(ActivityThread.java:3263) 05-25 21:31:24.909: E/AndroidRuntime(15191): ... 11 more 这是我的代码：
package com.rakesh.voicerecognitionexample; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.apache.http.NameValuePair; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import android.app.Activity; import android.app.SearchManager; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.speech.RecognizerIntent; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.Spinner; import android.widget.Toast; public class VoiceRecognitionActivity extends Activity { private static final int VOICE_RECOGNITION_REQUEST_CODE = 1001; private EditText metTextHint; private ListView mlvTextMatches; private Spinner msTextMatches; private Button mbtSpeak; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_voice_recognition); metTextHint = (EditText) findViewById(R.id.etTextHint); mlvTextMatches = (ListView) findViewById(R.id.lvTextMatches); msTextMatches = (Spinner) findViewById(R.id.sNoOfMatches); mbtSpeak = (Button) findViewById(R.id.btSpeak); } public void checkVoiceRecognition() { // Check if voice recognition is present PackageManager pm = getPackageManager(); List activities = pm.queryIntentActivities(new Intent( RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0); if (activities.size() == 0) { mbtSpeak.setEnabled(false); Toast.makeText(this, "Voice recognizer not present", Toast.LENGTH_SHORT).show(); } } public void speak(View view) { Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); // Specify the calling package to identify your application intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getClass() .getPackage().getName()); // Display an hint to the user about what he should say. intent.putExtra(RecognizerIntent.EXTRA_PROMPT, metTextHint.getText() .toString()); // Given an hint to the recognizer about what the user is going to say intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH); // If number of Matches is not selected then return show toast message if (msTextMatches.getSelectedItemPosition() == AdapterView.INVALID_POSITION) { Toast.makeText(this, "Please select No. of Matches from spinner", Toast.LENGTH_SHORT).show(); return; } int noOfMatches = Integer.parseInt(msTextMatches.getSelectedItem() .toString()); // Specify how many results you want to receive. The results will be // sorted where the first result is the one with higher confidence. intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, noOfMatches); startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == VOICE_RECOGNITION_REQUEST_CODE) //If Voice recognition is successful then it returns RESULT_OK if(resultCode == RESULT_OK) { ArrayList textMatchList = data .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS); if (!textMatchList.isEmpty()) { // If first Match contains the 'search' word // Then start web search. if (textMatchList.get(0).contains("search")) { String searchQuery = textMatchList.get(0).replace("search", " "); Intent search = new Intent(Intent.ACTION_WEB_SEARCH); search.putExtra(SearchManager.QUERY, searchQuery); startActivity(search); } else if (textMatchList.get(0).contains("dog")) { postTo(); } else { // populate the Matches mlvTextMatches .setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, textMatchList)); } } //Result code for various error. }else if(resultCode == RecognizerIntent.RESULT_AUDIO_ERROR){ showToastMessage("Audio Error"); }else if(resultCode == RecognizerIntent.RESULT_CLIENT_ERROR){ showToastMessage("Client Error"); }else if(resultCode == RecognizerIntent.RESULT_NETWORK_ERROR){ showToastMessage("Network Error"); }else if(resultCode == RecognizerIntent.RESULT_NO_MATCH){ showToastMessage("No Match"); }else if(resultCode == RecognizerIntent.RESULT_SERVER_ERROR){ showToastMessage("Server Error"); } super.onActivityResult(requestCode, resultCode, data); } void showToastMessage(String message){ Toast.makeText(this, message, Toast.LENGTH_SHORT).show(); } public void postTo() { HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://mysite.com/script.php"); try { List nameValuePairs = new ArrayList(2); nameValuePairs.add(new BasicNameValuePair("message", "cracanel")); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); httpclient.execute(httppost); } catch (ClientProtocolException e) { // TODO Auto-generated catch block } catch (IOException e) { // TODO Auto-generated catch block } } }
它是一个NetworkOnMainThreadexception。 您无法在主ui线程上运行与网络相关的操作。 您应该为此目的使用asynctask。
http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html
对于asynctask
http://developer.android.com/reference/android/os/AsyncTask.html
您还可以创建自己的线程并执行httppost。 但请确保您不要在backgroudn线程上更新ui。 Asyntask让您更轻松
例：
class TheTask extends AsyncTask { @Override protected void onPreExecute() { // TODO Auto-generated method stub super.onPreExecute(); // invoked on the ui thread. // display progress dialog } @Override protected void onPostExecute(Void result) { // TODO Auto-generated method stub super.onPostExecute(result); //invoked on the ui thread // dismiss progress dialog // result of doinbackground computation is a parameter to this // can update ui here } @Override protected Void doInBackground(Void... arg0) { // TODO Auto-generated method stub //invoked on the background thread // do not update ui // execute http post here postTo(); // call your post method here return null; } }
用法：
new TheTask().execute(); // load on ui thread
可以将参数传递给asynctask的构造函数。 您也可以直接将参数传递给doinbackground。
您需要在单独的线程或AsyncTask上进行网络连接。
你可以在这里看到我在这段代码中做到了这一点（AsyncTask + callback）： https ： //github.com/nedwidek/Android-Rest-API
或者使用搜索来查找许多其他示例。 如： – android等待asynctask完成 – 在AsyncTask中使用wait
AsyncTask适用于短时间后台任务（例如网络访问）。
只是一个简单的外部线程，如果您需要在此过程中更新UI，请使用Asynctask在您的代码中尝试此操作：
else if (textMatchList.get(0).contains("dog")) { Thread backgroundThread = new Thread(new Runnable() { @Override public void run() { postTo(); } }); backgroundThread.start(); }
您无法在UI线程上进行联网。 使用AsyncTask。