jan kowalski
- Forum posts: 1
Feb 1, 2017, 11:07:44 PM via Website
Feb 1, 2017 11:07:44 PM via Website
I have a php file with results:
{"groups":[{"id_group":"1"},{"nazwa":"Informatyka 2013-2017"},{"id_group":"2"},{"nazwa":"MIBM 2016-2017"},{"id_group":"3"},{"nazwa":"Informatyka 2015-2019"},{"id_group":"5"},{"nazwa":"UwB Fizyka 2012-2015"}]}
It should desplay all rows from table with clickable option in each row.
JSONParser.java
package com.brzozowski.marcin.inzynierka.activities;
import android.util.Log;
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.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.List;
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
// Making HTTP request
try {
// check for request method
if(method == "POST"){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}else if(method == "GET"){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
ChooseGroupActivity.java
package com.brzozowski.marcin.inzynierka.activities;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import com.brzozowski.marcin.inzynierka.R;
import com.brzozowski.marcin.inzynierka.models.Group;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
public class ChooseGroupActivity extends Activity {
private ProgressDialog pDialog;
JSONParser jParser = new JSONParser();
private static String url_all_products = "/getAllGroups.php";
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCTS = "groups";
private static final String TAG_ID_GROUP = "id_group";
private static final String TAG_NAME = "name";
JSONArray products = null;
private ListView listView;
private LinearLayout llContainer;
private ChooseGroupAdapter adapter;
private EditText inputSearch;
private ArrayList<Group> groupList;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_choosegroup);
listView = (ListView) findViewById(R.id.listView);
inputSearch = (EditText) findViewById(R.id.inputSearch);
groupList = new ArrayList<Group>();
new LoadAllProducts().execute();
//
adapter = new ChooseGroupAdapter(ChooseGroupActivity.this, groupList);
listView.setAdapter(adapter);
//
// Add Text Change Listener to EditText
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
adapter.getFilter().filter(s.toString());
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
@Override
protected void onResume() {
super.onResume();
adapter = new ChooseGroupAdapter(ChooseGroupActivity.this, groupList);
listView.setAdapter(adapter);
}
// @Override
// protected void onPause() {
// if(isFinishing()){
// if (pDialog!= null) {
// pDialog.dismiss();
// pDialog= null;
// }
// }
// }
class LoadAllProducts extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ChooseGroupActivity.this);
pDialog.setMessage("Loading groups. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Products: ", json.toString());
try {
// Checking for SUCCESS TAG
// int success = json.getInt(TAG_SUCCESS);
// if (success == 1) {
// products found
// Getting Array of Products
products = json.getJSONArray(TAG_PRODUCTS);
// looping through All Products
for (int i = 0; i < products.length(); i++) {
JSONObject c = products.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_ID_GROUP);
String name = c.getString(TAG_NAME);
Group group = new Group(name);
groupList.add(group);
}
///} else {
// no products found
// Launch Add New product Activity
Intent i = new Intent(getApplicationContext(),
NewGroupActivity.class);
// Closing all previous activities
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
// }
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed JSON data into ListView
* */
ArrayAdapter<Group> adapter = new ArrayAdapter<Group> (
ChooseGroupActivity.this,
R.layout.row, groupList);
}
});
}
}
}
The error:
E/WindowManager: android.view.WindowLeaked: Activity com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{2a82618a V.E..... R......D 0,0-1026,348} that was originally added here
at android.view.ViewRootImpl.<init>(ViewRootImpl.java:363)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:271)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85)
at android.app.Dialog.show(Dialog.java:298)
at com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity$LoadAllProducts.onPreExecute(ChooseGroupActivity.java:103)
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:591)
at android.os.AsyncTask.execute(AsyncTask.java:539)
at com.brzozowski.marcin.inzynierka.activities.ChooseGroupActivity.onCreate(ChooseGroupActivity.java:51)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
I have no idea how to solve this problem.
