I have an Android application that displays a list of names using checkboxes. I want to store the checked items and the unchecked items in my databases . I don’t want to store any data item permanently on the phone. I require a mechanism by which I can store the data (checked and unchecked) temporarily on the phone and then transfer it to database via a web service.
Can anyone tell me how to go about doing this ? What modifications should I do to my current code?
Here is my Android code that displays the list :
package com.demo;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import android.app.Activity;
import android.app.AlertDialog;
import an droid.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
public class TestApp extends Activity {
private static final String SOAP_ACTION = "http://tempuri.org/getData";
private static final String METHOD_NAME = "getData";
private static final String NAMESPACE = "http://tempuri.org/";
private static final String URL = "http://10.0.2.2/getdata2/Service1.asmx";
TextView tv;
boolean[] bln1=null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv=(TextView)findViewById(R.id.text1);
String[] arr2= call();
boolean[] bln=new boolean[arr2.length];
for(int i=0;i<arr2.length;i++)
{
bln[i]=false;
}
bln1 = new boolean[arr2.length];
new AlertDialog.Builder(TestApp.this)
.setIcon(R.drawable.alert_dialog_icon)
.setTitle("Title")
.setMultiChoiceItems(arr2,
bln,
new DialogInterface.OnMultiChoiceClickListener() {
public void onClick(DialogInterface dialog, int whichButton,
boolean isChecked) {
if(isChecked){
bln1[whichButton] = true;
}
else{
bln1[whichButton] = false;
}
}
})
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
JSONObject jsonObject = new JSONObject();
String[] arr2=call();
for(int i=0;i<arr2.length;i++)
try {
jsonObject.put("key"+i,arr2[i]);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONArray jArrayParam = new JSONArray();
jArrayParam.put(jsonObject);
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
nameValuePair.add(new BasicNameValuePair("bulkdata",
jArrayParam.toString()));
Log.e("bulkdata", jArrayParam.toString());
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/login2/Service1.asmx");//web service to send data to to forward to database
httppost.addHeader("Content-Type", "application/x-www-form-urlencoded");
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePair, HTTP.UTF_8));
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// Execute HTTP Post Request
try {
HttpResponse response=null;
response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
Log.e("entity:",entity.toString());
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// get response entity
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
}
})
.show();
}
public String[] call()
{
SoapPrimitive responsesData = null;
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
androidHttpTransport.debug = true;
try {
androidHttpTransport.call(SOAP_ACTION, envelope);
responsesData = (SoapPrimitive) envelope.getResponse();
System.out.println(" --- response ---- " + responsesData);
} catch (SocketException ex) {
ex.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
System.out.println( " ----" + responsesData );
String serviceResponse= responsesData .toString();
String[] temp;
String delimiter = "#";
temp= serviceResponse.split(delimiter);
System.out.println( " ---- length ---- " + temp.length);
return temp;
}
}
I suppose the error is in the .setPositiveButton() method, in the line String[] arr2=call().
Why are you reading again data from your webservice, like you did in the onCreate method, and putting it the the json result?
Shouldn’t you put in json result checkbox status, instead of original data?