MyActivity.java this is the first file who will run
package com.example.RadarOperationMonitoringSystem;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
public class MyActivity extends FragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPager pager = (ViewPager) findViewById(R.id.viewPager);
pager.setAdapter(new MyPagerAdapter(getSupportFragmentManager()));
}
private class MyPagerAdapter extends FragmentPagerAdapter {
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int pos) {
switch(pos) {
case 0: return FirstFragment.newInstance("FirstFragment, Instance 1");
case 1: return SecondFragment.newInstance("SecondFragment, Instance 1");
case 2: return ThirdFragment.newInstance("ThirdFragment, Instance 1");
default: return ThirdFragment.newInstance("ThirdFragment, Default");
}
}
@Override
public int getCount() {
return 3;
}
}
}
Here's the Second Fragment where I put the list view form database SecondFragment.java
package com.example.RadarOperationMonitoringSystem;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.SimpleAdapter;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class SecondFragment extends ListFragment {
// URL to get contacts JSON
public static final String url = "http://10.0.2.2/radaroperations/tagaytayEnergyReadings.php";
// JSON Node names
public static final String TAG_SITENAME1 = "siteName1";
private static final String TAG_FREQUENCY1 = "Frequency1";
private static final String TAG_ACCURRENT1 = "AC_Voltage1";
private static final String TAG_ACVOLTAGE1 = "AC_Current1";
private static final String TAG_SITENAME2 = "siteName2";
private static final String TAG_FREQUENCY2 = "Frequency2";
private static final String TAG_ACCURRENT2 = "AC_Voltage2";
private static final String TAG_ACVOLTAGE2 = "AC_Current2";
private static final String TAG_SITENAME3 = "siteName3";
private static final String TAG_FREQUENCY3 = "Frequency3";
private static final String TAG_ACCURRENT3 = "AC_Voltage3";
private static final String TAG_ACVOLTAGE3 = "AC_Current3";
private static final String TAG_SITENAME4 = "siteName4";
private static final String TAG_FREQUENCY4 = "Frequency4";
private static final String TAG_ACCURRENT4 = "AC_Voltage4";
private static final String TAG_ACVOLTAGE4 = "AC_Current4";
private static final String TAG_SITENAME5 = "siteName5";
private static final String TAG_FREQUENCY5 = "Frequency5";
private static final String TAG_ACCURRENT5 = "AC_Voltage5";
private static final String TAG_ACVOLTAGE5 = "AC_Current5";
private static final String TAG_SITENAME6 = "siteName6";
private static final String TAG_FREQUENCY6 = "Frequency6";
private static final String TAG_ACCURRENT6 = "AC_Voltage6";
private static final String TAG_ACVOLTAGE6 = "AC_Current6";
private static final String TAG_SITENAME7 = "siteName7";
private static final String TAG_FREQUENCY7 = "Frequency7";
private static final String TAG_ACCURRENT7 = "AC_Voltage7";
private static final String TAG_ACVOLTAGE7 = "AC_Current7";
// contacts JSONArray
JSONObject c = null;
ArrayList<HashMap<String, String>> contactList = new ArrayList<HashMap<String, String>>();
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.second_frag, container, false);
new GetContacts().execute();
return v;
}
public class GetContacts extends AsyncTask<String, String, JSONObject> {
@Override
protected JSONObject doInBackground(String... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
try {
JSONObject c = new JSONObject(jsonStr);
// Getting JSON Array node
String sitea = c.getString(TAG_SITENAME1);
String freq1 = c.getString(TAG_FREQUENCY1);
String curr1 = c.getString(TAG_ACCURRENT1);
String volts1 = c.getString(TAG_ACVOLTAGE1);
String site2 = c.getString(TAG_SITENAME2);
String freq2 = c.getString(TAG_FREQUENCY2);
String curr2 = c.getString(TAG_ACCURRENT2);
String volts2 = c.getString(TAG_ACVOLTAGE2);
String site3 = c.getString(TAG_SITENAME3);
String freq3 = c.getString(TAG_FREQUENCY3);
String curr3 = c.getString(TAG_ACCURRENT3);
String volts3 = c.getString(TAG_ACVOLTAGE3);
String site4 = c.getString(TAG_SITENAME4);
String freq4 = c.getString(TAG_FREQUENCY4);
String curr4 = c.getString(TAG_ACCURRENT4);
String volts4 = c.getString(TAG_ACVOLTAGE4);
String site5 = c.getString(TAG_SITENAME5);
String freq5 = c.getString(TAG_FREQUENCY5);
String curr5 = c.getString(TAG_ACCURRENT5);
String volts5 = c.getString(TAG_ACVOLTAGE5);
String site6 = c.getString(TAG_SITENAME6);
String freq6 = c.getString(TAG_FREQUENCY6);
String curr6 = c.getString(TAG_ACCURRENT6);
String volts6 = c.getString(TAG_ACVOLTAGE6);
String site7 = c.getString(TAG_SITENAME7);
String freq7 = c.getString(TAG_FREQUENCY7);
String curr7 = c.getString(TAG_ACCURRENT7);
String volts7 = c.getString(TAG_ACVOLTAGE7);
// tmp hashmap for single contact
HashMap<String, String> contact = new HashMap<String, String>();
// adding each child node to HashMap key => value
contact.put(TAG_SITENAME1, sitea);
contact.put(TAG_FREQUENCY1, freq1);
contact.put(TAG_ACCURRENT1, curr1);
contact.put(TAG_ACVOLTAGE1, volts1);
contact.put(TAG_SITENAME2, site2);
contact.put(TAG_FREQUENCY2, freq2);
contact.put(TAG_ACCURRENT2, curr2);
contact.put(TAG_ACVOLTAGE2, volts2);
contact.put(TAG_SITENAME3, site3);
contact.put(TAG_FREQUENCY3, freq3);
contact.put(TAG_ACCURRENT3, curr3);
contact.put(TAG_ACVOLTAGE3, volts3);
contact.put(TAG_SITENAME4, site4);
contact.put(TAG_FREQUENCY4, freq4);
contact.put(TAG_ACCURRENT4, curr4);
contact.put(TAG_ACVOLTAGE4, volts4);
contact.put(TAG_SITENAME5, site5);
contact.put(TAG_FREQUENCY5, freq5);
contact.put(TAG_ACCURRENT5, curr5);
contact.put(TAG_ACVOLTAGE5, volts5);
contact.put(TAG_SITENAME6, site6);
contact.put(TAG_FREQUENCY6, freq6);
contact.put(TAG_ACCURRENT6, curr6);
contact.put(TAG_ACVOLTAGE6, volts6);
contact.put(TAG_SITENAME7, site7);
contact.put(TAG_FREQUENCY7, freq7);
contact.put(TAG_ACCURRENT7, curr7);
contact.put(TAG_ACVOLTAGE7, volts7);
// adding contact to contact list
contactList.add(contact);
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
public void onPostExecute(JSONObject result) {
super.onPostExecute(result);
ListAdapter adapter = new SimpleAdapter(
getActivity(), contactList,
R.layout.list_item, new String[] { TAG_SITENAME1, TAG_FREQUENCY1, TAG_ACCURRENT1,
TAG_ACVOLTAGE1,TAG_SITENAME2, TAG_FREQUENCY2, TAG_ACCURRENT2,
TAG_ACVOLTAGE2,TAG_SITENAME3, TAG_FREQUENCY3, TAG_ACCURRENT3,
TAG_ACVOLTAGE3, TAG_SITENAME4, TAG_FREQUENCY4, TAG_ACCURRENT4,
TAG_ACVOLTAGE4, TAG_SITENAME5, TAG_FREQUENCY5, TAG_ACCURRENT5,
TAG_ACVOLTAGE5, TAG_SITENAME6, TAG_FREQUENCY6, TAG_ACCURRENT6,
TAG_ACVOLTAGE6, TAG_SITENAME7, TAG_FREQUENCY7, TAG_ACCURRENT7,
TAG_ACVOLTAGE7},
new int[] { R.id.sitename1,R.id.frequency1,
R.id.accurrent1, R.id.acvoltage1, R.id.sitename2, R.id.frequency2,
R.id.accurrent2, R.id.acvoltage2, R.id.sitename3, R.id.frequency3,
R.id.accurrent3, R.id.acvoltage3, R.id.sitename4, R.id.frequency4,
R.id.accurrent4, R.id.acvoltage4, R.id.sitename5, R.id.frequency5,
R.id.accurrent5, R.id.acvoltage5, R.id.sitename6, R.id.frequency6,
R.id.accurrent6, R.id.acvoltage6, R.id.sitename7, R.id.frequency7,
R.id.accurrent7, R.id.acvoltage7});
// updating listviews
setListAdapter(adapter);
}
}
public static SecondFragment newInstance(String text) {
SecondFragment f = new SecondFragment();
Bundle b = new Bundle();
b.putString("msg", text);
f.setArguments(b);
return f;
}
}
Here's the ServiceHandler.java code
package com.example.RadarOperationMonitoringSystem;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.List;
public class ServiceHandler{
static String response = null;
public final static int GET = 1;
public final static int POST = 2;
public ServiceHandler() {
}
/**
* Making service call
* @url - url to make request
* @method - http request method
* */
public String makeServiceCall(String url, int method) {
return this.makeServiceCall(url, method, null);
}
/**
* Making service call
* @url - url to make request
* @method - http request method
* @params - http request params
* */
public String makeServiceCall(String url, int method,
List<NameValuePair> params) {
try {
// http client
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
// Checking http request method type
if (method == POST) {
HttpPost httpPost = new HttpPost(url);
// adding post params
if (params != null) {
httpPost.setEntity(new UrlEncodedFormEntity(params));
}
httpResponse = httpClient.execute(httpPost);
} else if (method == GET) {
// appending params to url
if (params != null) {
String paramString = URLEncodedUtils
.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
httpResponse = httpClient.execute(httpGet);
}
httpEntity = httpResponse.getEntity();
response = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
}
Here's the logcat when I run it:
02-10 03:11:18.452 2724-2724/com.example.RadarOperationMonitoringSystem E/Trace﹕ error opening trace file: No such file or directory (2)
02-10 03:11:18.962 786-851/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
02-10 03:11:20.373 786-843/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
02-10 03:11:25.942 786-847/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
02-10 03:11:27.482 2724-2741/com.example.RadarOperationMonitoringSystem E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #4
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:299)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
at java.util.concurrent.FutureTask.run(FutureTask.java:239)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
Caused by: java.lang.NullPointerException
at org.json.JSONTokener.nextCleanInternal(JSONTokener.java:116)
at org.json.JSONTokener.nextValue(JSONTokener.java:94)
at org.json.JSONObject.<init>(JSONObject.java:154)
at org.json.JSONObject.<init>(JSONObject.java:171)
at com.example.RadarOperationMonitoringSystem.SecondFragment$GetContacts.doInBackground(SecondFragment.java:86)
at com.example.RadarOperationMonitoringSystem.SecondFragment$GetContacts.doInBackground(SecondFragment.java:73)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
02-10 03:11:27.532 786-852/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
02-10 03:11:28.102 786-846/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
02-10 03:11:28.612 786-846/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
PLEASE HELP ME. I NEED TO FIX THIS APP BADLY! THANK YOU!
