Develop Reference

Geo location Json data is not displayed

I think i write wrong my code where i try to retrieve geolocation data:
All relevant api keys are added and relevant api enabled...
private class GetCoordinates extends AsyncTask<String, Void, String>
{
ProgressDialog dialog = new ProgressDialog(AroundMeMapsActivity.this);
#Override
protected void onPreExecute() {
super.onPreExecute();
dialog.setMessage("Please wait...");
dialog.setCanceledOnTouchOutside(true);
dialog.show();
}
#Override
protected String doInBackground(String... strings) {
String response;
try {
Toast.makeText(AroundMeMapsActivity.this, "!!!!", Toast.LENGTH_SHORT).show();
String address = strings[0];
HttpDataHandler http = new HttpDataHandler();
//String url = String.format("https://maps.googleapis.com/maps/api/geocode/json?adress=%s", address);
String url = String.format("https://maps.googleapis.com/maps/api/geocode/json?address=%s&key=AIzaSyAzSgqQEZS1K1fowxhUnwxl4hMsKMsLlN4", address);
response = http.getHTTPData(url);
return response;
} catch (Exception ex) {
}
return null;
}
#Override
protected void onPostExecute(String s) {
try {
Toast.makeText(AroundMeMapsActivity.this, "????", Toast.LENGTH_SHORT).show();
JSONObject jsonObject=new JSONObject(s);
String lat=((JSONArray)jsonObject.get("results")).getJSONObject(0).getJSONObject("geometry")
.getJSONObject("location").get("lat").toString();
String lng=((JSONArray)jsonObject.get("results")).getJSONObject(0).getJSONObject("geometry")
.getJSONObject("location").get("lng").toString();
answer_location.setText(String.format("Coordinates: %s / %s",lat,lng));
if(dialog.isShowing())
dialog.dismiss();
} catch (Exception e) {
e.printStackTrace();
}
}
}
I should get lat and lng coordinate, but it is not displayed...
Could you help to check why?

android get json response

Hey guys i am new to Android networking concepts.I want to send username,password,imei number and location to the php server from android app.I am done my sending part.now my question is how to receive the response.i want to get the status (1 or 0) according to that i want to move to the next page.so anyone will know how to do this you are welcome.
private static final String REGISTER_URL="http://vPC70.com/App/login.php";
username = editTextUserName.getText().toString().toLowerCase();
userpassword=editTextPassword.getText().toString().toLowerCase();
loc="11.295756,77.001890";
imeino = "12312312456";
register(username, userpassword, imeino, loc);
private void register(final String username, final String userpassword,
String imeino, String loc) {
String urlSuffix = "?
username="+username+"&userpassword="+userpassword+"&imeino="+imeino
+"&location="+loc;
class RegisterUser extends AsyncTask<String,String , String>{
ProgressDialog loading;
#Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(LoginActivity.this, "Please
Wait",null, true, true);
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
}
#Override
protected String doInBackground(String... params) {
String s = params[0];
BufferedReader bufferedReader = null;
try {
URL url = new URL(REGISTER_URL+s);
HttpURLConnection con = (HttpURLConnection)
url.openConnection();
bufferedReader = new BufferedReader(new
InputStreamReader(con.getInputStream()));
String result;
result = bufferedReader.readLine();
return result;
}catch(Exception e){
return null;
}
}
}
RegisterUser ru = new RegisterUser();
ru.execute(urlSuffix);
this is the response
{"Login":[{"status":"1","message":"Login Successfully !!!"}]}
{"Login":[{"status":"0","message":"Invalid Password !!!"}]}
if the response is 1 toast the message login sucessfully
if the response is 0 toast the message invalid password in post execute

After getting the response from server,based on status display the message in toast
try {
JSONObject jobj = new JSONObject(response);
String status = jobj.getString("status");
String msg = jobj.getString("message");
if (status.equals("1")) {
//move to next page
Toast.makeText(LoginActivity.this, msg,Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(LoginActivity.this, msg,Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}

Create the POJO / Model class to convert your Response.
Like this
public class LoginResponse{
#SerializedName("Login")
#Expose
private List<Login> login = null;
public List<Login> getLogin() {
return login;
}
public void setLogin(List<Login> login) {
this.login = login;
}
}
public class Login {
#SerializedName("status")
#Expose
private String status;
#SerializedName("message")
#Expose
private String message;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
}
in PostExcecute convert the response to POJO object like this by using GSON
Gson gson = new Gson();
LoginResponse response = gson.toJson(result, LoginResponse.class);
Here you can check the conditions:;
if(response !=null && response.getLogin() !=null)
{
if(response.getLogin().getStatus().equalIgnoreCase("1"))
{
// show toast Login Successfully !!! and move to next screen
}
else if(response.getLogin().getStatus().equalIgnoreCase("0"))
{
// Invalid Password !!! your logic here
}
}

Here is the parser according to your response string
private void parseResponseJson(String response) throws JSONException {
JSONObject jsonObject = new JSONObject(response).getJSONArray("Login").getJSONObject(0);
String status = jsonObject.getString("status");
String message = jsonObject.getString("message");
}

In onPostExecute(String s) you can convert result into json and check status value like
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
JsonObject object = new JsonObject(s);
if(object.optString("status").equals("1"))
{
// Your Logic here
}
}

Simple and Efficient solution. Use google's Gson library . You can easily create a hashmap from json string like this.
Type type = new TypeToken<Map<String, String>>(){}.getType();
Map<String, String> myMap = gson.fromJson(JSONString, type);

How to form json array in android to send to server?

I have created an Api which is used to add multiple invitations in the database called as sendMultipleInvites.
Now I want to implement this API in android. I am trying to create an AsyncTask to call the api. I have helper class to connect to http server.
I am testing this in postman: my input should be like this:
{
"invitations": [
{
"date" : "12/08/2016",
"invitee_no" : "196756456",
"status" : "1",
"user_name" : "user10"
},
{
"date" : "12/08/2016",
"invitee_no" : "13633469",
"status" : "1",
"user_id" : "user9"
}
]
}
My serverRequest class:
public class ServerRequest {
String api;
JSONObject jsonParams;
public ServerRequest(String api, JSONObject jsonParams) {
this.api = api;
this.jsonParams = jsonParams;
}
public JSONObject sendRequest() {
try {
URL url = new URL(api);
HttpURLConnection con = (HttpURLConnection)url.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-Type", "application/json");
con.setDoOutput(true);
con.setDoInput(true);
OutputStreamWriter writer = new OutputStreamWriter(con.getOutputStream());
writer.write(jsonParams.toString());
writer.close();
int responseCode = con.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
StringBuilder sb = new StringBuilder();
BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line = "";
while ( (line = reader.readLine()) != null ){
sb.append(line);
}
reader.close();
Log.d("ServerResponse", new String(sb));
return new JSONObject(new String(sb));
} else {
throw new UnexpectedServerException("Unexpected server exception with status code : "+responseCode);
}
} catch (MalformedURLException me) {
me.printStackTrace();
return Excpetion2JSON.getJSON(me);
} catch(IOException ioe) {
ioe.printStackTrace();
return Excpetion2JSON.getJSON(ioe);
} catch(UnexpectedServerException ue) {
ue.printStackTrace();
return Excpetion2JSON.getJSON(ue);
} catch (JSONException je) {
je.printStackTrace();
return Excpetion2JSON.getJSON(je);
}
}
public ServerRequest(String api) {
this.api = api;
}
}
This is my asyncTask :
public class SendMultipleInvitesAsyncTask extends AsyncTask<Map<String, String>, Void, JSONObject> {
private Context context;
public SendInviteAsyncTask(Context context) {
this.context = context;
this.progressDialog = new ProgressDialog(context);
}
#Override
protected JSONObject doInBackground(Map<String, String>... params) {
try {
String api = context.getResources().getString(R.string.server_url) + "contactsapi/sendInvite.php";
Map2JSON mjs = new Map2JSON();
JSONObject jsonParams = mjs.getJSON(params[0]);
ServerRequest request = new ServerRequest(api, jsonParams);
return request.sendRequest();
} catch (JSONException je) {
return Excpetion2JSON.getJSON(je);
}
}
#Override
protected void onPostExecute(JSONObject jsonObject) {
super.onPostExecute(jsonObject);
Log.d("ServerResponse", jsonObject.toString());
try {
int result = jsonObject.getInt("status");
String message = jsonObject.getString("message");
if (result == 1) {
//Code for having successful result for register api goes here
} else {
Toast.makeText(context, message, Toast.LENGTH_LONG).show();
}
} catch (JSONException je) {
je.printStackTrace();
Toast.makeText(context, je.getMessage(), Toast.LENGTH_LONG).show();
}
}
}
Edit:
Trying like this it is giving an error when I try to pass an arraylist to the execute method of async task.
AsyncTask:
public class SendInviteAsyncTask extends AsyncTask<ArrayList<Invitation>, Void, JSONObject> {
private ProgressDialog progressDialog;
private Context context;
public SendInviteAsyncTask(Context context) {
this.context = context;
this.progressDialog = new ProgressDialog(context);
}
#Override
protected JSONObject doInBackground(ArrayList<Invitation>... arrayLists) {
try {
String api = context.getResources().getString(R.string.server_url) + "contactsapi/sendInvite.php";
ServerRequest request = new ServerRequest(api, jsonParams);
return request.sendRequest();
} catch (JSONException je) {
return Excpetion2JSON.getJSON(je);
}
}
Activity:
public class SendMultipleInvites extends AppCompatActivity {
private ArrayList<Invitation> invitationArrayList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send_multiple_invites);
invitationArrayList = new ArrayList<>();
Invitation invitation = new Invitation("3","17/02/2016","55165122","1","user10");
invitationArrayList.add(invitation);
invitation = new Invitation("3","17/02/2016","282751221","1","user10");
invitationArrayList.add(invitation);
new SendMultipleInvitesAsyncTask(SendMultipleInvites.this).execute(invitationArrayList);
}
}
I was using hash map to send key and values. How can I do to send a json array?
How to modify my async Task? How can I send array to an async task? Can anyone help please.. Thank you..

To pass Array to your async Task do this:
SendInviteAsyncTask extends AsyncTask<ArrayList<Sring>, Void, JSONObject>
To make a Json object you can use Gson library

try this
JSONObject obj = new JSONObject();
JSONArray req = new JSONArray();
JSONObject reqObj = new JSONObject()
reqObj.put( "ctrlId", "txt1" );
req.put( reqObj );
reqObj = new JSONObject();
reqObj.put( "ctrlId", "txt2" );
req.put( reqObj );
obj.put( "req", req );

You can really simplify your code by using a few libraries for building json and sending http requests. Here is sample code using Gson for building the json string and Volley for the http request.
I also used this fantastic project for generating the json pojo objects below. It makes really quick work of it.
Invite ivt = new Invite();
ivt.getInvitations().add( new Invitation("3","17/02/2016","55165122","1","user10"));
ivt.getInvitations().add( new Invitation("3","17/02/2016","282751221","1","user10"));
Gson gson = new Gson();
String jsonString = gson.toJson(ivt);
String url = appContext.getResources().getString(R.string.server_url) + "contactsapi/sendInvite.php";
RequestQueue queue = Volley.newRequestQueue(appContext);
StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.d("TAG", "success: " + response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
queue.add(stringRequest);
Invite.java
public class Invite {
#SerializedName("invitations")
#Expose
private List<Invitation> invitations = new ArrayList<Invitation>();
public List<Invitation> getInvitations() {
return invitations;
}
public void setInvitations(List<Invitation> invitations) {
this.invitations = invitations;
}
}
Invitation.java
public class Invitation {
#SerializedName("date")
#Expose
private String date;
#SerializedName("invitee_no")
#Expose
private String inviteeNo;
#SerializedName("status")
#Expose
private String status;
#SerializedName("user_name")
#Expose
private String userName;
#SerializedName("user_id")
#Expose
private String userId;
public Invitation(String d, String one, String two, String three, String four) {
date = d;
inviteeNo = one;
status = two;
userName = three;
userId = four;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getInviteeNo() {
return inviteeNo;
}
public void setInviteeNo(String inviteeNo) {
this.inviteeNo = inviteeNo;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
}

Exact procedure to add an image through json android

Hello so I have already an expirience with AsyncTask so I can manage to get some data with PHP scripts from an SQL Server and parsed them with JSON. Now what I would want is to know how can I use the AsyncTask in order to load images to some activities. Also is there anyway that I can call the AsyncTask before the app starts? because that would be really helpful too.
I don't have any adapters I am just using this for the AsyncTask:
// The definition of our task class
private class PostTask extends AsyncTask<String, Integer, String> {
private String postName;
private JSONObject jsonvar = new JSONObject();
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(String... params) {
this.postName = params[0];
String status = "";
List<NameValuePair> values = new ArrayList<NameValuePair>();
values.add( new BasicNameValuePair( "username", this.postName ) );
final AndroidHttpClient client = AndroidHttpClient.newInstance( "" );
HttpResponse response = HttpHelper.postResponse( client, Register.phpUrl, values );
String data = HttpHelper.getData( response );
try {
jsonvar = new JSONObject(data);
status=jsonvar.getString("status");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
client.close();
return status;
}
// #Override
// protected void onProgressUpdate(Integer... values) {
// super.onProgressUpdate(values);
// }
#Override
protected void onPostExecute(String status) {
String session = "", status_message = " ";
try {
status_message = jsonvar.getString("status_message");
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
super.onPostExecute(status);
}
}
}

As i can tell with information provided, supposing that what you read from your server is the image URL and obtain it in JSON format, what i would do is writing a listener to your AsyncTask, calling it in onPostExecute method, and loading it in your Activity using PicassoImagesLoader
Something like:
private class PostTask extends AsyncTask<String, Integer, String> {
public interface onLoadFinishedListener {
public void onLoadFinished(JSONObject response)
}
protected JSONObject onPostExecute(JSONObject response){
onLoadFinished(response);
}
}
And in your Activity:
public myActivity extends Activity implements PostTask.onLoadFinishedListener {
#Override
onLoadFinished(JSONObject response){
Picasso.with(this).load(response.getString("url")).into(imageView);
}
}
Something like this would help :)

How to execute Asynctask simultaneously

I have two asynctask in one class and i am having trouble in executing them at the same time.
Here is my scenario, my the user clicks the view january calendar button it will show up the events for the month of calendar and the comments for it. The events and comments are stored in mysql database so i have to fetch different url. I used asyctask to fetch the url. Whenever i call the other asynctask it cannot be resolved. help me out!
Here is my code:
package sscr.stag;
#SuppressLint("ShowToast")
public class Calendar extends ListActivity {
// All xml labels
TextView txtEvent;
// Progress Dialog
private ProgressDialog pDialog;
JSONArray user;
JSONObject hay;
private static final String CALENDAR_URL = "http://www.stagconnect.com/StagConnect/calendar/januaryCalendar.php";
private static final String COMMENT_URL = "http://www.stagconnect.com/StagConnect/calendar/januaryReadComment.php";
private static final String TAG_USER = "username";
private static final String TAG_MESSAGE = "message";
private static final String TAG_TIME = "time";
private static final String TAG_ARRAY = "posts";
private JSONArray mCalendar = null;
private ArrayList<HashMap<String, String>> mCommentList;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.calendaradmin);
txtEvent = (TextView) findViewById(R.id.event);
new LoadCalendar().execute();
new LoadCommentCal().execute(); // error here, says cannot be resolved in this type
}
private class LoadCalendar extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Calendar.this);
pDialog.setMessage("Loading Calendar.. ");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
String json = null;
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(CALENDAR_URL);
HttpResponse response = httpclient.execute(httppost);
HttpEntity resEntity = response.getEntity();
json = EntityUtils.toString(resEntity);
Log.i("Profile JSON: ", json.toString());
} catch (Exception e) {
e.printStackTrace();
}
return json;
}
#Override
protected void onPostExecute(String json) {
super.onPostExecute(json);
pDialog.dismiss();
try
{
hay = new JSONObject(json);
JSONArray user = hay.getJSONArray("posts");
JSONObject jb= user.getJSONObject(0);
String event = jb.getString("activities");
txtEvent.setText(event);
}catch(Exception e)
{
e.printStackTrace();
}
}
public void updateJSONdata() {
mCommentList = new ArrayList<HashMap<String, String>>();
JSONParser jParser = new JSONParser();
JSONObject json = jParser.getJSONFromUrl(COMMENT_URL);
try {
mCalendar = json.getJSONArray(TAG_ARRAY);
for (int i = 0; i < mCalendar.length(); i++) {
JSONObject c = mCalendar.getJSONObject(i);
String username = c.getString(TAG_USER);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_USER, username);
mCommentList.add(0, map);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
private void updateList() {
ListAdapter adapter = new SimpleAdapter(Calendar.this, mCommentList,
R.layout.calendar_comment, new String[] { TAG_MESSAGE,
TAG_USER, TAG_TIME }, new int[] { R.id.message,
R.id.username, R.id.time });
setListAdapter(adapter);
ListView lv = getListView();
lv.scrollTo(0, 0);
}
public class LoadCommentCal extends AsyncTask<Void, Void, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Calendar.this);
pDialog.setMessage("Loading Comments...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
#Override
protected String doInBackground(Void... args) {
updateJSONdata();
return null;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
pDialog.dismiss();
updateList();
}
}
}
}

Your second asynctask public class LoadCommentCal extends AsyncTask is inside the first asynctask!
You need to move it out of the first asynctask.
private class LoadCalendar extends AsyncTask<String, String, String> {
...
}
... other functions
private class LoadCommentCal extends AsyncTask<Void, Void, String> {
...
}

You are declaring lots of things inside the first AsyncTask I strongly reccomend to close your AsyncTask after the onPostExecute
#Override
protected void onPostExecute(String json) {
super.onPostExecute(json);
pDialog.dismiss();
try
{
hay = new JSONObject(json);
JSONArray user = hay.getJSONArray("posts");
JSONObject jb= user.getJSONObject(0);
String event = jb.getString("activities");
txtEvent.setText(event);
}catch(Exception e)
{
e.printStackTrace();
}
}
}
and then removing one } at the end of the java file (and also reindent if you wish)