Socket program compile error

[straygrey]

I am failing to understand why I am not able to compile the following program. Someone please help.

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class AndroidClient extends Activity {

EditText textOut;
TextView textIn;

 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.main);
  
     textOut = (EditText)findViewById(R.id.textout);
     Button buttonSend = (Button)findViewById(R.id.send);
     textIn = (TextView)findViewById(R.id.textin);
     buttonSend.setOnClickListener(buttonSendOnClickListener);
 }

 Button.OnClickListener buttonSendOnClickListener
 = new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
 // TODO Auto-generated method stub
 Socket socket = null;
 DataOutputStream dataOutputStream = null;
 DataInputStream dataInputStream = null;

 try {
  socket = new Socket("192.168.1.101", 8888);
  dataOutputStream = new DataOutputStream(socket.getOutputStream());
  dataInputStream = new DataInputStream(socket.getInputStream());
  dataOutputStream.writeUTF(textOut.getText().toString());
  textIn.setText(dataInputStream.readUTF());
 } catch (UnknownHostException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 }
 finally{
  if (socket != null){
   try {
    socket.close();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }

  if (dataOutputStream != null){
   try {
    dataOutputStream.close();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }

  if (dataInputStream != null){
   try {
    dataInputStream.close();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
 }
}};
}

the main.xml look like

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 >
<TextView
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="@+string/hello"
 />
<EditText
 android:id="@+id/textout"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 />
<Button
 android:id="@+id/send"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="Send"
 />
<TextView
 android:id="@+id/textin"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 />
</LinearLayout>

and the string.xml look like

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">Main</string>
</resources>

and the result of the compile is
alf@ThinkPad-T500:~/Development/android/AndroidClient$ ant debug
Buildfile: /home/alf/Development/android/AndroidClient/build.xml
[setup] Android SDK Tools Revision 10
[setup] Project Target: Android 2.1-update1
[setup] API level: 7
[setup]
[setup] ------------------
[setup] Resolving library dependencies:
[setup] No library dependencies.
[setup]
[setup] ------------------
[setup]
[setup] WARNING: No minSdkVersion value set. Application will install on all Android versions.
[setup]
[setup] Importing rules file: tools/ant/main_rules.xml

-debug-obfuscation-check:

-set-debug-mode:

-compile-tested-if-test:

-pre-build:

-dirs:
[echo] Creating output directories if needed...

-aidl:
[echo] Compiling aidl files into Java classes...

-renderscript:
[echo] Compiling RenderScript files into Java classes and RenderScript bytecode...

-resource-src:
[echo] Generating R.java / Manifest.java from the resources...

-pre-compile:

compile:
[javac] /home/alf/Development/android/android-sdk-linux_x86/tools/ant/main_rules.xml:384: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
[javac] Compiling 2 source files to /home/alf/Development/android/AndroidClient/bin/classes
[javac] /home/alf/Development/android/AndroidClient/src/za/co/stockton/AndroidClient/AndroidClient.java:23: package R does not exist
[javac] setContentView(R.layout.main);
[javac] ^
[javac] /home/alf/Development/android/AndroidClient/src/za/co/stockton/AndroidClient/AndroidClient.java:25: package R does not exist
[javac] textOut = (EditText)findViewById(R.id.textout);
[javac] ^
[javac] /home/alf/Development/android/AndroidClient/src/za/co/stockton/AndroidClient/AndroidClient.java:26: package R does not exist
[javac] Button buttonSend = (Button)findViewById(R.id.send);
[javac] ^
[javac] /home/alf/Development/android/AndroidClient/src/za/co/stockton/AndroidClient/AndroidClient.java:27: package R does not exist
[javac] textIn = (TextView)findViewById(R.id.textin);
[javac] ^
[javac] 4 errors

BUILD FAILED
/home/alf/Development/android/android-sdk-linux_x86/tools/ant/main_rules.xml:384: Compile failed; see the compiler error output for details.

Total time: 1 second

[TobyK]

You didn't import the generated R class. Go to the class code and press Ctrl+Shift+O to import the required class, if you are using Eclipse. If not, you should be using it to avoid wasting time on errors like these, as it will be immediately highlighted.

Sent from my GT-P1010 using Tapatalk

[straygrey]

Pity but I am not using Eclipse but rather working from the command line.