Android Http請求錯誤

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我曾嘗試過很多方法在android中創建http請求。無論我做什麼，Logcat都會給我錯誤。我需要一些幫助。我加Android Http請求錯誤

uses-permission android:name="android.permission.INTERNET">

彰顯文件我已經檢查了我的連接，它說，它是連接...

代碼：

package com.example.gpschat; 

import java.io.BufferedReader; 
import java.io.ByteArrayOutputStream; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.net.URLConnection; 


import org.apache.http.HttpResponse; 
import org.apache.http.HttpStatus; 
import org.apache.http.StatusLine; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.impl.client.DefaultHttpClient; 

import android.support.v7.app.ActionBarActivity; 
import android.content.Context; 
import android.net.ConnectivityManager; 
import android.net.NetworkInfo; 
import android.os.Bundle; 
import android.os.Message; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.LinearLayout; 
import android.widget.LinearLayout.LayoutParams; 
import android.widget.TextView; 

public class MainActivity extends ActionBarActivity { 

    String[] messages; 
    LinearLayout.LayoutParams lp; 
    TextView tv; 
    @Override 
    protected void onCreate(Bundle savedInstanceState){ 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     String m = ""; 
     try { 
      m = excutePost(); 
     } catch (ClientProtocolException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     Log.d("gilad", m); 
     messages = m.split(","); 
     LinearLayout ll = (LinearLayout) findViewById(R.id.chat); 
     for (String message : messages) 
     { 
      lp = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT); 
      tv = new TextView(this); 
      tv.setId(1); 
      tv.setTextSize(15); 
      tv.setText(message); 
      tv.setLayoutParams(lp); 
      (ll).addView(tv); 
     } 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 
    public static String excutePost() throws IOException 
     { 
     HttpClient httpclient = new DefaultHttpClient(); 
     HttpResponse response = httpclient.execute(new HttpGet("http://laurawharton.com/gps/getM.php")); 
     StatusLine statusLine = response.getStatusLine(); 
     if(statusLine.getStatusCode() == HttpStatus.SC_OK){ 
      ByteArrayOutputStream out = new ByteArrayOutputStream(); 
      response.getEntity().writeTo(out); 
      out.close(); 
      String responseString = out.toString(); 
      //..more logic 
      return responseString; 
     } else{ 
      //Closes the connection. 
      response.getEntity().getContent().close(); 
      throw new IOException(statusLine.getReasonPhrase()); 
     } 
     } 
}

錯誤：

09-02 11:43:10.873: W/dalvikvm(1234): threadid=1: thread exiting with uncaught exception (group=0xb3ac8ba8) 
09-02 11:43:10.893: E/AndroidRuntime(1234): FATAL EXCEPTION: main 
09-02 11:43:10.893: E/AndroidRuntime(1234): Process: com.example.gpschat, PID: 1234 
09-02 11:43:10.893: E/AndroidRuntime(1234): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.gpschat/com.example.gpschat.MainActivity}: android.os.NetworkOnMainThreadException 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.ActivityThread.access$800(ActivityThread.java:135) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.os.Handler.dispatchMessage(Handler.java:102) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.os.Looper.loop(Looper.java:136) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.ActivityThread.main(ActivityThread.java:5017) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at java.lang.reflect.Method.invokeNative(Native Method) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at java.lang.reflect.Method.invoke(Method.java:515) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at dalvik.system.NativeStart.main(Native Method) 
09-02 11:43:10.893: E/AndroidRuntime(1234): Caused by: android.os.NetworkOnMainThreadException 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1145) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at java.net.InetAddress.getAllByName(InetAddress.java:214) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at com.example.gpschat.MainActivity.excutePost(MainActivity.java:89) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at com.example.gpschat.MainActivity.onCreate(MainActivity.java:44) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.Activity.performCreate(Activity.java:5231) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 
09-02 11:43:10.893: E/AndroidRuntime(1234):  ... 11 more 
09-02 11:43:16.833: I/Process(1234): Sending signal. PID: 1234 SIG: 9

來源

2014-09-02 user3926081

您是否首先在Google中搜索此問題？ 2011年堆棧溢出：http://stackoverflow.com/questions/6343166/android-os-networkonmainthreadexception – DaniEll 2014-09-02 16:00:01