我正在开发一个Android应用程序，用户必须将其详细信息重新发送到服务器.... 用户（这里是学生）必须给他的卷号，名称，分支，学期。代码没有语法错误，但代码没有将详细信息上传到服务器....
package com.example.collegenoticeboard;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import com.example.testproject3.R;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
public class NewRegister extends Activity
{
Button b;
EditText et,et_name,et_rollno;
TextView tv2;
HttpPost httppost;
StringBuffer buffer;
HttpResponse response;
HttpClient httpclient;
List<NameValuePair> nameValuePairs;
int s_id,b_id,ba_id,d_id;
String sem,s_sem,s_br,s_div,s_bch;
RadioGroup rg_semester;
RadioButton rb_semester1,rb_semester2,rb_semester3,rb_semester4,rb_semester5,rb_semester6,rb_semester7,rb_semester8;
RadioGroup rg_branch;
RadioButton rb_branch_it,rb_branch_comps,rb_branch_mech,rb_branch_extc,rb_branch_etrx;
RadioGroup rg_division;
RadioButton rb_division_a,rb_division_b;
RadioGroup rg_batch;
RadioButton rb_batch1,rb_batch2,rb_batch3,rb_batch4;
public void onCreate(Bundle savedInstanceState)
{
try{
super.onCreate(savedInstanceState);
setContentView(R.layout.newregister);
tv2 = (TextView)findViewById(R.id.ntv1);
b = (Button)findViewById(R.id.newsubmit);
et_name=(EditText)findViewById(R.id.to_name);
et_rollno=(EditText)findViewById(R.id.to_rollno);
rg_semester = (RadioGroup) findViewById(R.id.radioGroupSemester);
//s_id = rg_semester.getCheckedRadioButtonId();
rb_semester1=(RadioButton)findViewById(R.id.rb_sem_01);
rb_semester2=(RadioButton)findViewById(R.id.rb_sem_02);
rb_semester3=(RadioButton)findViewById(R.id.rb_sem_03);
rb_semester4=(RadioButton)findViewById(R.id.rb_sem_04);
rb_semester5=(RadioButton)findViewById(R.id.rb_sem_05);
rb_semester6=(RadioButton)findViewById(R.id.rb_sem_06);
rb_semester7=(RadioButton)findViewById(R.id.rb_sem_07);
rb_semester8=(RadioButton)findViewById(R.id.rb_sem_08);
rg_branch = (RadioGroup) findViewById(R.id.radioGroupBranch);
//b_id = rg_branch.getCheckedRadioButtonId();
rb_branch_it=(RadioButton)findViewById(R.id.rb_br_it);
rb_branch_comps=(RadioButton)findViewById(R.id.rb_br_ce);
rb_branch_mech=(RadioButton)findViewById(R.id.rb_br_me);
rb_branch_extc=(RadioButton)findViewById(R.id.rb_br_extc);
rb_branch_etrx=(RadioButton)findViewById(R.id.rb_br_exe);
rg_division = (RadioGroup) findViewById(R.id.radioGroupDivision);
//d_id = rg_division .getCheckedRadioButtonId();
rb_division_a=(RadioButton)findViewById(R.id.rb_div_a);
rb_division_b=(RadioButton)findViewById(R.id.rb_div_b);
rg_batch = (RadioGroup) findViewById(R.id.radioGroupBatch);
//ba_id = rg_batch .getCheckedRadioButtonId();
rb_batch1=(RadioButton)findViewById(R.id.rb_batch_1);
rb_batch2=(RadioButton)findViewById(R.id.rb_batch_2);
rb_batch3=(RadioButton)findViewById(R.id.rb_batch_3);
rb_batch4=(RadioButton)findViewById(R.id.rb_batch_4);
b.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
final ProgressDialog p = new ProgressDialog(v.getContext()).show(v.getContext(),"Waiting for Server", "Accessing Server");
Thread thread = new Thread()
{
@Override
public void run()
{
try
{
//tv2.setText("Harsh");
/* rb_semester = (RadioButton) findViewById(s_id);
rb_branch = (RadioButton) findViewById(b_id);
rb_division = (RadioButton) findViewById(d_id);
rb_batch = (RadioButton) findViewById(ba_id);*/
tv2.setText("smester1");
if(rb_semester1.isChecked())
{
s_sem=(String) rb_semester1.getText();
}
if(rb_semester2.isChecked())
{
s_sem=(String) rb_semester2.getText();
}
if(rb_semester3.isChecked())
{
s_sem=(String) rb_semester3.getText();
}
if(rb_semester4.isChecked())
{
s_sem=(String) rb_semester4.getText();
}
if(rb_semester5.isChecked())
{
s_sem=(String) rb_semester5.getText();
}
if(rb_semester6.isChecked())
{
s_sem=(String) rb_semester6.getText();
}
if(rb_semester7.isChecked())
{
s_sem=(String) rb_semester7.getText();
}
if(rb_semester8.isChecked())
{
s_sem=(String) rb_semester8.getText();
}
if(rb_branch_it.isChecked())
{
s_br=(String) rb_branch_it.getText();
}
if(rb_branch_comps.isChecked())
{
s_br=(String) rb_branch_comps.getText();
}
if(rb_branch_mech.isChecked())
{
s_br=(String) rb_branch_mech.getText();
}
if(rb_branch_extc.isChecked())
{
s_br=(String) rb_branch_extc.getText();
}
if(rb_branch_etrx.isChecked())
{
s_br=(String) rb_branch_etrx.getText();
}
//tv2.setText(s_sem+s_br);
if(rb_division_a.isChecked())
{
s_div=(String) rb_division_a.getText();
}
if(rb_division_b.isChecked())
{
s_div=(String) rb_division_b.getText();
}
//tv2.setText(s_sem+s_br+s_div);
if(rb_batch1.isChecked())
{
s_bch=(String) rb_batch1.getText();
}
if(rb_batch2.isChecked())
{
s_bch=(String) rb_batch2.getText();
}
if(rb_batch3.isChecked())
{
s_bch=(String) rb_batch3.getText();
}
if(rb_batch4.isChecked())
{
s_bch=(String) rb_batch4.getText();
}
httpclient=new DefaultHttpClient();
httppost= new HttpPost("http://10.0.2.2/test22.php"); // make sure the url is correct.
//add your data
nameValuePairs = new ArrayList<NameValuePair>();
// Always use the same variable name for posting i.e the android side variable name and php side variable name should be similar,
nameValuePairs.add(new BasicNameValuePair("name",et_name.getText().toString().trim()));
nameValuePairs.add(new BasicNameValuePair("rollno",et_rollno.getText().toString().trim()));
nameValuePairs.add(new BasicNameValuePair("semester",s_sem));
nameValuePairs.add(new BasicNameValuePair("branch",s_br));
nameValuePairs.add(new BasicNameValuePair("division",s_div));
nameValuePairs.add(new BasicNameValuePair("batch",s_bch));
//tv2.setText(s_sem+s_br+s_div+s_bch);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
//Execute HTTP Post Request
response=httpclient.execute(httppost);
ResponseHandler<String> responseHandler = new BasicResponseHandler();
final String response = httpclient.execute(httppost, responseHandler);
System.out.println("Response : " + response);
runOnUiThread(new Runnable()
{
public void run()
{
p.dismiss();
tv2.setText("Response from PHP : " + response);
}
});
}
catch(Exception e)
{
runOnUiThread(new Runnable()
{
public void run()
{
p.dismiss();
}
});
System.out.println("Exception : " + e.getMessage());
}
}
};
thread.start();
}
});
}
catch(Exception e)
{
}
}
}
以下是日志cat错误：
03-30 10:11:40.567: E/Trace(733): error opening trace file: No such file or directory (2)