我想从一个站点加载一个网页并在edittext上显示其源代码，例如登录，我将登录信息发送到站点，如果站点返回“ok”，我转到下一个表单，但它不工作，它显示为空回复 ：
检查我的代码：
package com.arash.rz.webtar;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
public class MainActivity extends Activity implements AsyncTaskCompleteListener<String> {
public String SendReuqest(String command,String variables)
{
String response = null;
String url="api.php?cmd="+command+"&varz="+variables;
return response;
}
public void MessageBox(String message)
{
Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Button btnlogin = (Button)findViewById(R.id.button1);
final Button btnregister = (Button)findViewById(R.id.button2);
final EditText txtemail = (EditText)findViewById(R.id.editText1);
final EditText txtepass = (EditText)findViewById(R.id.editText2);
btnlogin.setFilterTouchesWhenObscured(true);
btnlogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
readWebpage(v);
}
// Perform action on click
}
);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.menu_settings:
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onTaskComplete(String result) {
// TODO Auto-generated method stub
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
String response = "";
for (String url : urls) {
DefaultHttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try {
HttpResponse execute = client.execute(httpGet);
InputStream content =
execute.getEntity().getContent();
BufferedReader buffer = new BufferedReader(
new InputStreamReader(content));
String s = "";
while ((s = buffer.readLine()) != null) {
response += s;
}
} catch (Exception e) {
e.printStackTrace();
}
}
return response;
}
protected void onPostExecute(String result) {
//textView.setText(result);
MessageBox("Returned:"+result);
EditText ed = (EditText)findViewById(R.id.editText1);
ed.setText(result);
}
}
public void readWebpage(View view) {
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute(new String[] { "http://127.0.0.1" });
}