写入资产文件夹中的文件时发生错误的文件编号异常

Question

我是Android编程中的新手。我的问题是将任何信息写入资产文件夹中的文件。然而，Eclipse将抛出一个异常，我不明白：错误的文件数量例外。这里是我的代码：

package com.example.marport; 
import java.io.BufferedWriter; 
import java.io.FileWriter; 
import java.io.IOException; 
import org.ksoap2.SoapEnvelope; 
import org.ksoap2.SoapFault; 
import org.ksoap2.serialization.SoapObject; 
import org.ksoap2.serialization.SoapPrimitive; 
import org.ksoap2.serialization.SoapSerializationEnvelope; 
import org.ksoap2.transport.HttpTransportSE; 
import org.xmlpull.v1.XmlPullParserException; 

import com.example.marport.R; 

import android.app.Activity; 
import android.content.res.AssetFileDescriptor; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 

public class Plakasorgulama extends Activity { 

    final static String NAMESPACE = "http://webservice.marport.dcat.com/"; 
    final static String METHOD_NAME = "truckLicenceDate"; 
    final static String SOAP_ACTION = "http://webservice.marport.dcat.com/truckLicenceDate"; 
    final static String URL = "http://192.168.1.164:8070/test/services/MarportWebServicePort"; 

    private EditText plaka; 
    private Button sorgu; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.plakasorgulama); 

     plaka = (EditText) findViewById(R.id.etPlaka); 
     sorgu = (Button) findViewById(R.id.bPlakaSorgulama); 
     final SoapObject Request=new SoapObject(NAMESPACE,METHOD_NAME); 

     sorgu.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       String plakainfo = plaka.getText().toString(); 
       SoapObject request = new SoapObject("licence", plakainfo); 
       SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
       soapEnvelope.dotNet=false; 
       soapEnvelope.setOutputSoapObject(Request); 
       HttpTransportSE aht=new HttpTransportSE(URL); 

       try { 
         AssetFileDescriptor descriptor = getAssets().openFd("htmlcode.txt"); 
         BufferedWriter out = new BufferedWriter(new FileWriter(descriptor.getFileDescriptor())); 
         out.write("tryyyyyyyyyyyyyyyyyyyyyy"); 
         out.close(); 
        } catch (Exception e) { 
         e.printStackTrace(); 
        } 

       try { 
        aht.call(SOAP_ACTION, soapEnvelope); 
       } catch (IOException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } catch (XmlPullParserException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 
        try { 
        SoapPrimitive result=(SoapPrimitive) soapEnvelope.getResponse(); 
       } catch (SoapFault e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 
      } 
     });    
    } 
} 

而且我希望能够对资产的文件夹的直接路径。当我这样做，这次FileNotFound异常来了..这个问题让我恶心。

而这些日志：

08-27 07:38:36.749: W/System.err(740): java.io.IOException: Bad file number 
08-27 07:38:36.770: W/System.err(740): at org.apache.harmony.luni.platform.OSFileSystem.writeImpl(Native Method) 
08-27 07:38:36.770: W/System.err(740): at org.apache.harmony.luni.platform.OSFileSystem.write(OSFileSystem.java:129) 
08-27 07:38:36.800: W/System.err(740): at java.io.FileOutputStream.write(FileOutputStream.java:297) 
08-27 07:38:36.800: W/System.err(740): at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:175) 
08-27 07:38:36.800: W/System.err(740): at java.io.OutputStreamWriter.close(OutputStreamWriter.java:151) 
08-27 07:38:36.800: W/System.err(740): at java.io.BufferedWriter.close(BufferedWriter.java:130) 
08-27 07:38:36.800: W/System.err(740): at com.example.marport.Plakasorgulama$1.onClick(Plakasorgulama.java:61) 
08-27 07:38:36.800: W/System.err(740): at android.view.View.performClick(View.java:2408) 
08-27 07:38:36.800: W/System.err(740): at android.view.View$PerformClick.run(View.java:8816) 
08-27 07:38:36.800: W/System.err(740): at android.os.Handler.handleCallback(Handler.java:587) 
08-27 07:38:36.800: W/System.err(740): at android.os.Handler.dispatchMessage(Handler.java:92) 
08-27 07:38:36.810: W/System.err(740): at android.os.Looper.loop(Looper.java:123) 
08-27 07:38:36.820: W/System.err(740): at android.app.ActivityThread.main(ActivityThread.java:4627) 
08-27 07:38:36.820: W/System.err(740): at java.lang.reflect.Method.invokeNative(Native Method) 
08-27 07:38:36.820: W/System.err(740): at java.lang.reflect.Method.invoke(Method.java:521) 
08-27 07:38:36.820: W/System.err(740): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
08-27 07:38:36.820: W/System.err(740): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
08-27 07:38:36.820: W/System.err(740): at dalvik.system.NativeStart.main(Native Method) 

非常感谢你。

Answer 1

“资产”文件夹中的文件只能在READ ONLY格式下使用，不能在其上写入。