Sorry for my bad english, but i have problem and can't figure it out..
I have custom listview in my fragment for getting products from JSON array. And I have 3 ImageButtons in every listview row;
Plus Button(+), Minus Button(-) and Remove Button(X)..
So when i click each button, its calling JSON request for update product's piece number, getting new datas from response and repopulate array list.
Everything ok but, when I click that buttons faster, it seems there is 1 sec delay between multiple requests even first volley request has already done before.
Here is my JSON method in TableAdapter.java
public void JSON(final int position, final int process) {
if (inProgress==false) {
dialog = new ProgressDialog(myContext);
dialog.setMessage("Updating.....");
dialog.show();
inProgress = true;
System.out.println("**** Now request is beginning............");
final int rowID = tableModelList.get(position).getID();
final int treeID = tableModelList.get(position).getAna_dal();
final float price = tableModelList.get(position).getBFiyat();
final int quantity = tableModelList.get(position).getAdet();
final int print = tableModelList.get(position).getYazdimi();
final String insertUrl = "http://"+getServer+"/t6mobilservice/order-piece.php";
Map<String, String> parameters = new HashMap<>();
parameters.put("tableID", "" + getTableId);
parameters.put("rowID", "" + rowID);
parameters.put("treeID", ""+treeID);
parameters.put("process",""+process);
parameters.put("quantity",""+quantity);
parameters.put("price",""+price);
parameters.put("print",""+print);
CustomRequest jsObjRequest = new CustomRequest(Request.Method.POST, insertUrl, parameters, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
JSONArray getOrders = response.getJSONArray("order");
Gson gson = new Gson();
tableModelList.clear();
for (int i = 0; i < getOrders.length(); i++) {
JSONObject order = getOrders.getJSONObject(i);
TableModel tableModel = gson.fromJson(order.toString(), TableModel.class);
tableModelList.add(tableModel);
}
mAdapter.notifyDataSetChanged();
System.out.println("**** onResponse: Request is done............");
System.out.println("**** JSON: "+response.toString());
dialog.cancel();
inProgress = false;
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError response) {
Log.d("Response: ", response.toString());
inProgress = false;
}
});
requestQueue.add(jsObjRequest);
}
}
Dialog is showing when request beginning and canceling when request is done. But as I said, when I click faster, there is a delay between multiple requests even first request has already done. I'm saying 1 sec, because 2nd request is beginning after 1 sec exactly, no matter how I clicking fast. I can't figure it out..
I tested fast clicks to showing toasts with random numbers and it's working fine. But when I testing with JSON method, there is a weird delay.
I have SwipeRefreshLayout and ScrollView in my fragment.
I'm using Volley with singleton.
EDIT 1. : Here's a video link to showing what my problem is..
EDIT 2. : Here's a LogCat output video for every click
Every fast click has returning success json output, but nothing change instantly..
Thanks for your help.
Related
I'm creating an android app and i have a relatively large amount of data (mostly in text form and as key->string pairs) that i want to display in my app.
The problem is i don't want to enter the data in my app's code,meaning feel each TextView manually with the associated data.i don't feel that to be right!
I want my app to read this data from a file(maybe a JSON?) and then associate each key-> string pair with the related TexView.
To be more clear, i need to read from a prepared text file and use that text inside my app, AND i want to do this offline,i dont want to use any webservic
How should i accomplish this? should i use a database or room?Then how should i feel the database manually without using insert codes inside the app?
Use Volley for JSON Parsing
private static final String url ="your url";
Create a method
final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Please wait, while we load the data");
progressDialog.show();
*make a String or JSON request*
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET,
newurl, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d("response", response.toString());
Log.i("updated Url",newurl);
progressDialog.dismiss();
*then move into the json and create JSON object or JSON Array to get their String values*
try {
JSONObject data = response.getJSONObject("data");
JSONArray onwardflights = data.getJSONArray("data_key");
for (int i = 0; i < onwardflights.length(); i++) {
JSONObject onwardFlightsChild = onwardflights.getJSONObject(i);
String arrival,deparutre,duration,flightno,grossamount,image,direct;
JSONObject object = onwardFlightsChild.getJSONObject("data_key");
Onwardflights onwardflights1 = new Onwardflights(
arrival = onwardFlightsChild.getString("data_key"),
deparutre = onwardFlightsChild.getString("data_key"),
duration = onwardFlightsChild.getString("data_key"),
flightno = onwardFlightsChild.getString("data_key"),
direct = onwardFlightsChild.getString("data_key"),
origin = onwardFlightsChild.getString("data_key"));
Log.i("Origin",origin);
Fare fare = new Fare(
grossamount = object.getString("data_key")
);
onwardflights1.setFare(fare);
suggestionmodel.add(onwardflights1);
}
*Create an instance of adapter and pass the parameters*
RecyclerAdapter recyclerAdapter = new RecyclerAdapter(suggestionmodel,getApplicationContext());
recyclerView.setAdapter(recyclerAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d("THIS", "Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
requestQueue.add(jsonObjReq);
}
You could simply use a JSON file. Now, the question is: How do you ship a JSON file with your app so that it's available at Runtime? You can use any of these methods:
Put it in the directory res/raw/ and read it using the Resources class (it has a openRawResource() method)
Put it in the assets/ directory and read it in using the AssetManager class (it has a open() method that returns an InputStream)
I hope this helps... Merry coding!
Can anyone help me? I debugg app many more time but I can not found what exact issue going in my android app. In my android app, My cases are describe below.
cases 1: Insert data into database It is perfectly worked fine.
case 2: That data display in to recycler view ok. It will display fine.
It will work with only single user login. When another user will login in to app and try to add data then It will get this exception. Or when I will refresh first user login view at that time it have same exception.
Or when I remove second user from database then I refresh first login user view at that time it will work perfectly . Now what to do? Please any one help me out of this issue. I attached screen shot of my error log please refer it.
Retrive data.java
private void makeJsonArrayRequest(final String email) {
String cancel_req_tag = "list";
JsonArrayRequest req = new JsonArrayRequest(URL_FOR_SELECT,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
Log.d("OnResponse", response.toString());
try {
// Parsing json array response
// loop through each json object
for (int i = 0; i < response.length(); i++) {
JSONObject jsonObject = response.getJSONObject(i);
ListMobileModal objMobileModal = new ListMobileModal();
if (jsonObject.getString("email").equals(email)) {
objMobileModal.email = jsonObject.getString("email");
if (!jsonObject.isNull("name")) {
objMobileModal.lname = jsonObject.getString("name"); //here we can fetch webservice field
}
if (!jsonObject.isNull("title")) {
objMobileModal.title = jsonObject.getString("title"); //here we can fetch webservice field
}
if (!jsonObject.isNull("eimage")) {
objMobileModal.eimage = jsonObject.getString("eimage");
}
if (!jsonObject.isNull("eid")) {
objMobileModal.eid = jsonObject.getString("eid");
}
if (!jsonObject.isNull("ename")) {
objMobileModal.ename = jsonObject.getString("ename");
}
if (!jsonObject.isNull("edescription")) {
objMobileModal.edescription = jsonObject.getString("edescription");
}
if (!jsonObject.isNull("evlocation")) {
objMobileModal.elocation = jsonObject.getString("elocation");
}
lstListMobile.add(i, objMobileModal);
}
}
objMobileAdapter = new ListMobileAdapter(SavedPhoneBottomActivity.this, lstListMobile);
objEmptyRecyclerViewAdapter = new EmptyRecyclerViewAdapter("No selected list!");
if (lstListMobile == null || lstListMobile.size() == 0) {
rvDisplay.setAdapter(objEmptyRecyclerViewAdapter);
rvDisplay.setVisibility(View.VISIBLE);
} else {
rvDisplay.setAdapter(objMobileAdapter);
rvDisplay.setVisibility(View.VISIBLE);
}
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(SavedPhoneBottomActivity.this,
"Error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d("VolleyError", "Error: " + error.getMessage());
Toast.makeText(SavedPhoneBottomActivity.this,
error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
AppSingleton.getInstance(getApplicationContext()).addToRequestQueue(req, cancel_req_tag);
}
List exception error
try to replace lstListMobile.add(i, objMobileModal); with lstListMobile.add(objMobileModal);
when if (jsonObject.getString("email").equals(email)) condition fails 0 index is not added for that user.
you will get ArrayIndexOutOfBound error on lstListMobile.add(1, objMobileModal); if 0 index is not present
You're inserting lstListMobile.add(i, objMobileModal); maybe you can just add lstListMobile.add(objMobileModal);? Probably whats happening is that when i==0 is does not pass the test if (jsonObject.getString("email").equals(email)) {. So it does not add and the size remains 0. When i==1 it breaks when inserting.
Please check first array is not null
if (response.length > 0) {
// do something
}
else{
//empty array
}
I tried to retrieve a list of form data stored in database in my Android application. Each row of database contains some personal information of a person in string format and also an image of that person. I have stored the images in database in MEDIUMBLOB format.
Whenever I try to retrieve data from my server using JSONObjectrequest of Volley Library in my Android app, the response is usually very slow. Sometimes it takes more than 1 minute to view only 10 to 12 rows retrieved from the database.
This is my logcat:
D/Volley: [337] BasicNetwork.logSlowRequests: HTTP response for request=<[ ] http://helpclick.ahsanaasim.me/v1/tasksall/johny 0xa3e020c1 NORMAL 1> [lifetime=14740],
I tried to search for a perfect solution but I couldn't find anything satisfactory. Here is my Java code:
mRequestStartTime = System.currentTimeMillis();
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET,
showUrl2, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
long totalRequestTime = System.currentTimeMillis() - mRequestStartTime;
System.out.println(totalRequestTime);
System.out.println(response.toString());
try { c1++;
System.out.println(c1);
JSONArray incidents = response.getJSONArray("incidents");
for (int i = 0; i < incidents.length(); i++) {
e=0;
JSONObject incident = incidents.getJSONObject(i);
c1++;
id= incident.getString("id");
age = incident.getString("age");
gender = incident.getString("gender");
location = incident.getString("location");
//det= incident.getString("det");
String image=new String();
image = incident.getString("bigimage");
if(image.length()!=0) {
myBitmap = ConvertToImage(image);
Bitmap bitmap= Bitmap.createScaledBitmap(myBitmap,500,500,true);
imgs.add(bitmap);
ages.add(age);
genders.add(gender);
locations.add(location);
ids.add(id);
}
}
if(c1>0) {
System.out.println(ages.size());
Intent intent1 = new Intent(search_buttons_page.this, All_Incidents.class);
startActivity(intent1);
}
}
catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
System.out.append(error.getMessage());
}
});
jsonObjectRequest.setRetryPolicy(new DefaultRetryPolicy(
20000,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
requestQueue.add(jsonObjectRequest);
It would be really helpful if someone can tell me the reason of this slow performance and how to solve it by making minimum modifications in my source code.
Don't keep the images in the db. Keep them in files, and keep the URL of the files in the db. Download the images separately as needed via URL. Then you aren't killing your database access times with what should be file IO.
Im trying to dynamicly load listview.
Firstly,getting first ten data from web serives and adding it to listview.
For every ten row proggress dialog should appear when getting data.
If I dont use dismis, proggres dialog appear.
If I use dismis, proggresbar does not appear or appear and dismissed never shown in screen.
While getting response from web services screen stucks for 1-2 sec. It should not be.
Here is my code
public void setMessageList(int rowsArea){
ProgressDialog progressDialog = ProgressDialog.show(AdminMessages.this, "", "Loading...");
progressDialog.getWindow().setGravity(Gravity.BOTTOM);
List<NameValuePair> parameter = new ArrayList<NameValuePair>();
String url_confirmation =getInstance.getInstance().getUrl()+"getspecificrowmessages.php";
parameter.add(new BasicNameValuePair("rowsarea", Integer.toString(rowsArea)));
JSONObject json = jsonParser.makeHttpRequest(url_confirmation,"POST", parameter);
try {
int success = json.getInt("result");
if(success == 1) {
JSONArray messages = json.getJSONArray("messages");
for(int i=0;i<messages.length();i++){
JSONObject c = messages.getJSONObject(i);
String subject=c.getString("theSubject");
Integer id=c.getInt("id");
Integer msgId=c.getInt("msgId");
String senderName=c.getString("sender_name");
String receiverName=c.getString("recipient_name");
String dateTime=c.getString("dateTime");
String theFileNames=c.getString("theFileNames");
messageDetailList.add(new MessageListDetail(subject,senderName,receiverName,dateTime,theFileNames,id,msgId));
}
page+=10;
}
progressDialog.dismiss();
}
catch (JSONException e) {
e.printStackTrace();
}
}
The reason is that you should use a ProgressBar instead, and manage its visibility with setVisibility(View.VISIBLE) for showing it, and setVisibility(View.GONE) for hiding it.
I have been able to pull the Facebook newsfeed for the logged in user using the "me/home" Graph API Call and am displaying the result in an activity.
Now I have been trying numerous methods which will query the post's like column and check if the current user has liked a post to display the status. Essentially, I am setting a drawable to indicate the user has liked a post.
I cannot really post any code that I have tried so far simply because none of them work. And believe me, I have tried literally numerous methods.
I would appreciate if someone could at least prod me in the right direction.
EDIT: This is my latest attempt at querying the likes column and comparing the result with the current user's ID:
This code is where I am checking for likes count and adding them to an ArrayList. This is also where I am running the query to get the likes on the post.
// GET THE POST'S LIKES COUNT
if (json_data.has("likes")) {
JSONObject feedLikes = json_data.optJSONObject("likes");
String countLikes = feedLikes.getString("count");
postLikesCountArrayList.add(countLikes);
// TEST STARTS
// QUERY THE LIKES COLUMN TO CHECK YOUR LIKE STATUS ON A POST
Bundle params = new Bundle();
params.putString(Facebook.TOKEN, Utility.mFacebook.getAccessToken());
Utility.mAsyncRunner.request(finalThreadID + "/likes&limit=200", params, new LikesListener());
// TEST ENDS
} else {
String countLikes = "0";
postLikesCountArrayList.add(countLikes);
}
And this code block is the Listener (a privte class in the same activity) where the results are checked:
private class LikesListener extends BaseRequestListener {
#Override
public void onComplete(final String response, final Object state) {
try {
JSONObject JOLikes = new JSONObject(response);
JSONArray JALikes = JOLikes.getJSONArray("data");
for (int i = 0; i < JALikes.length(); i++) {
JSONObject JOTemp = JALikes.getJSONObject(i);
if (JOTemp.has("id")) {
String getTempID = JOTemp.getString("id");
if (getTempID.equals(initialUserID)) {
Runnable run = new Runnable() {
#Override
public void run() {
// TODO Auto-generated method stub
ImageView postYourLike = (ImageView) findViewById(R.id.postYourLike);
postYourLike.setBackgroundResource(R.drawable.btn_icon_liked);
}
};
TestNewsFeeds.this.runOnUiThread(run);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
You can use this fql. Replace the post_id
SELECT likes.can_like, likes.user_likes FROM stream WHERE post_id = "1274834235_3976149403543"
response would look like this, if user_likes is true, he has liked it
{
"data": [
{
"likes": {
"can_like": true,
"user_likes": false
}
}
]
}