Develop Reference

Connect Android to Laravel using http URL

I'm confused on how can I connect my android mobile to Laravel I've tried different ways but returns me an Java.ioFileNotFoundException:http://122.168...
I found out that the problem is the CSRF-TOKEN when I've tried disabling the CSRF-TOKEN in my laravel it works , what I tried I fetch first my CSRF-TOKEN and submit it with CSRF-TOKEN when buttons click but it didn't work either.
I used Plugin for Advanced-HttpURLConnection GITHUB LINK link
This is what I tried
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
#Override
public void run() {
FetchData fetchData = new FetchData("http://122.168.1.3/app/refreshtokens");
if (fetchData.startFetch()) {
if (fetchData.onComplete()) {
String fetchResult = fetchData.getResult();
try {
//getting the token from fetch data
JSONObject jsonObject = new JSONObject(fetchResult);
String csrfToken = jsonObject.getString("csrfToken");
String[] field = new String[3];
field[0] = "id_no";
field[1] = "password";
field[2] = "X-CSRF-TOKEN";
//Creating array for data
String[] data = new String[3];
data[0] = id_no;
data[1] = password;
data[2] = csrfToken;
PutData putData = new PutData("http://122.168.1.3/app/auth", "POST", field, data);
if (putData.startPut()) {
if (putData.onComplete()) {
String result = putData.getResult();
//just want to getData when success
Toast.makeText(getApplicationContext(), "Testt " + result, Toast.LENGTH_SHORT).show();
}
}
//End Write and Read data with URL
} catch (JSONException e) {
Toast.makeText(getApplicationContext(), "error catch " + e, Toast.LENGTH_SHORT).show();
}
}
}}
});

Change local variable inside method, when the method is executed the variable is not changed

I'm working on an android app. I have this form, when the button is clicked it execute a method called insertData(). Inside this function I change a local variable called "address" with another function getAddress().
Inside the function getAddress the local variable "address" is changed successfully. But when we enter the function insertData(), the variable "address" still contains the old data in this case "Location Unknown".
What am I not seeing here?
insertData()
public String address = "Location unknown";
public boolean insertData(String title, String description, String image, Double longitude, Double latitude, String date) {
String location = Double.toString(longitude) + "," + Double.toString(latitude);
getAddress(location);
Log.d("TAG2", address); // Still "Location unknown"
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(COL_2, title);
contentValues.put(COL_3, description);
contentValues.put(COL_4, image);
contentValues.put(COL_5, longitude);
contentValues.put(COL_6, latitude);
contentValues.put(COL_7, date);
contentValues.put(COL_8, address);
long result = db.insert(TABLE_NAME, null, contentValues);
if (result == -1)
return false;
else
return true;
}
getAddress()
public void getAddress(String coordination) {
String token = "{removed for a reason haha}";
String url = "https://api.mapbox.com/geocoding/v5/mapbox.places/" + coordination + ".json?access_token=" + token;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(url).build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
#Override
public void onResponse(Call call, Response response) throws IOException {
if(response.isSuccessful()) {
String data = response.body().string();
JsonParser parser = new JsonParser();
try {
JsonObject obj = (JsonObject) parser.parse(data);
JsonArray arr = obj.getAsJsonArray("features");
JsonObject objj = arr.get(2).getAsJsonObject();
String place = objj.get("place_name").getAsString();
address = place;
Log.d("TAG", address); // Gives an address
}
catch (Exception e) {
e.printStackTrace();
}
}
}
});
}
Logcat Debugger
2019-06-15 20:12:58.968 31465-31465/com.example.triptracker D/TAG2: Location unkown
2019-06-15 20:12:59.269 31465-31569/com.example.triptracker D/TAG: Mountain View, California, United States
I cannot change the onResponse() method to return String. I don't know why, but it is a read only method.
getAddress {changed}
public void getAddress(String coordination) {
String token = "{empty}";
String url = "https://api.mapbox.com/geocoding/v5/mapbox.places/" + coordination + ".json?access_token=" + token;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(url).build();
try (Response response = client.newCall(request).execute()) {
String data = response.body().string();
JsonParser parser = new JsonParser();
if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
JsonObject obj = (JsonObject) parser.parse(data);
JsonArray arr = obj.getAsJsonArray("features");
JsonObject objj = arr.get(2).getAsJsonObject();
String place = objj.get("place_name").getAsString();
address = place;
Log.d("TAG", address);
}
catch (Exception e) {
e.printStackTrace();
}
}

getAddress() does its work asynchronously. By the time getAddress() returns, your HTTP request will not be complete, and so address will not have changed yet.
Since insertData() is doing disk I/O, you should be calling insertData() on its own background thread, so you do not freeze the UI while the disk I/O is going on. If that is the case, then you can use OkHttp synchronously, using execute() instead of enqueue(). That will allow you to have getAddress() return the address, so you can insert it into your database.

Android Login screen from Json

I´m newbie on Android and need help.
I have a JSON that looks like this:
{
"Id": 1,
"Name": "user",
"userId": 4,
"active": true,
"ProfileId": 1,
"Tema": "green",
"Language": "english",
"success": true,
"error": false
}
Json 2:
{"message":"no user or password","success":false,"erroAplicacao":false}
This is my code:
public class MainActivity extends AppCompatActivity {
EditText usernameWidget;
EditText passwordWidget;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getSupportActionBar().hide();
usernameWidget = (EditText) findViewById(R.id.tv_username);
passwordWidget = (EditText) findViewById(R.id.tv_password);
}// END ON CREATE
public class DownloadTask extends AsyncTask<String, Void, String> {
String message = "message";
String loginSuccess;
String Id = "Id";
#Override
protected String doInBackground(String... urls) {
String result = "";
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL(urls[0]);
urlConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = urlConnection.getInputStream();
InputStreamReader reader = new InputStreamReader(inputStream);
int data = reader.read();
while (data != -1){
char current = (char) data; // each time creates a char current
result += current;
data = reader.read();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
} // END doInBackground
//Method called when the doInBack is complete
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
try {
JSONObject jsonObject = new JSONObject(result);
Log.i("***JSON ITSELF***", result);
loginSuccess = jsonObject.getString("success");
Log.i("*****LOGIN SUCCESS*****", loginSuccess);
message = jsonObject.getString("message");
Log.i("*****MESSAGE*****", message);
Id = jsonObject.getString("Id");
Log.i("*****ID*****", pessoaFisicaId);
}catch(JSONException e) {
e.printStackTrace();
}// END CATCH
if (loginSuccess.contains("true")){
Intent intent = new Intent(getApplicationContext(), SecondActivity.class);
startActivity(intent);
}else if (loginSuccess.contains("false")){
Toast.makeText(MainActivity.this, message, Toast.LENGTH_SHORT).show();
}
}// END POST EXECUTE
}// END Download Task
public void login(View view) {
String user = usernameWidget.getText().toString();
String pass = passwordWidget.getText().toString();
String stringJSON = "*URL*login=" + user + "&senha=" + pass;
DownloadTask task = new DownloadTask();
task.execute(stringJSON);
Log.i("*****JSON URL*****", stringJSON);
}// END LOGIN
}// END MAIN
In this order:
loginSuccess = jsonObject.getString("success");
message = jsonObject.getString("message");
Id = jsonObject.getString("Id");
I get the message ("no user or password") from json2 (different url) as a Toast.
If I change the order, lets say, to:
loginSuccess = jsonObject.getString("success");
Id = jsonObject.getString("Id");
message = jsonObject.getString("message");
I don´t get a message. In fact I get the value "message" from the String message at the start of the DownloadTask class.
It seems that the json is only getting two values, the first ones I ask for.
One thing though is that only when the user or password is wrong is that the json has a message (json2):
{"message":"no user or password","success":false,"erroAplicacao":false}
Since my json cant be transformed into an array json (I tried and got error saying this), what should I do?

When you call jsonObject.getString("your_string"), this will throw a JSONException if your string cannot be found. Therefore, the remaining lines in of code in the method will not be executed. Change your LogCat settings to verbose and you should be able to see what's going on.
More info on the getString() method here:
https://developer.android.com/reference/org/json/JSONObject.html#getString(java.lang.String)

Use GSON
public class User{
private int Id;
private String Name;
}
Parse
User user = GSON.fromJSON(jsonString, User.class);

Android Service-Activity 2 way communication

in my team's Android application I have a service running from boot which communicates with a server to perform operations such as logging in, registering, chatting between phones and updating the phone database.
I need to make my service communicate with the activity bi-directionally: for example I am working on the login activity at the moment and the username and passwords are Strings taken from a text field on the app screen and I have been able to pass them to the service for it to send an authorisation command to the server.
public void loginPressed(View v){
usernameStr = usernameField.getText().toString();
passwordStr = passwordField.getText().toString();
if (!bound) return;
Bundle b = new Bundle();
Message msg = Message.obtain(null, ChatService.LOGIN);
try {
b.putString("username", usernameStr);
b.putString("password", passwordStr);
msg.setData(b);
messenger.send(msg);
}
catch (RemoteException e) {
}
This works as I would have expected. When the server responds with a message saying whether or not the login was sucessful, I need it to pass a message back to the activity so that I can start the main activity if succesful or prompt for re-entry if not.
I tried to use the msg.replyTo field to get the return messenger to send the information back, but when I run the app it force closes with a null pointer exception and I have no idea why this is happening. Here is the code that seems to be the culprit:
private class IncomingHandler extends Handler {
#Override
public void handleMessage(Message msg) {
switch(msg.what) {
case LOGIN:
Bundle b = msg.getData();
String username = b.getString("username");
String password = b.getString("password");
String loginMessage = TCPCall.login(username, password);
connection.sendMessage(loginMessage);
String loginReturn = connection.retrieveMessage();
Message m;
Scanner s = new Scanner(loginReturn);
s.useDelimiter(",");
String c = s.next();
String status = s.next();
String message = s.next();
if (status.equals("OK")) {
m = Message.obtain(null, LoginActivity.OK);
try {
msg.replyTo.send(m);
} catch (RemoteException e) {}
}
else {
m = Message.obtain(null, LoginActivity.ERR);
try {
msg.replyTo.send(m);
} catch (RemoteException e) {}
}
break;
The null pointer seems to be coming from the
msg.replyTo.send(m);
line of code in both cases (login succesful and login failed)
Any help to fix this problem would be greatly appreciated :)

As Gregg points out in the comments. You need to set msg.replyTo = messenger; int he place where you send the original message.
An example can be found here: http://www.survivingwithandroid.com/2014/01/android-bound-service-ipc-with-messenger.html

I think you forgot to send response to Login Activity by bundle from Service.
So, i made some changes in Messenger Service
define one global variable and made some changes in Incoming Handler
static final int LOGIN_STATUS = 1;
private class IncomingHandler extends Handler {
#Override
public void handleMessage(Message msg) {
switch(msg.what) {
case LOGIN:
Bundle b = msg.getData();
String username = b.getString("username");
String password = b.getString("password");
String loginMessage = TCPCall.login(username, password);
connection.sendMessage(loginMessage);
String loginReturn = connection.retrieveMessage();
Message m = Message.obtain(null, LOGIN_STATUS);
Scanner s = new Scanner(loginReturn);
s.useDelimiter(",");
String c = s.next();
String status = s.next();
String message = s.next();
if (status.equals("OK")) {
b.putString("responseC",c);
b.putString("responseStatus",status);
b.putString("responseMessage",message)
m.setData(b);
try {
msg.replyTo.send(m);
} catch (RemoteException e) {}
}
else {
/*if something is wrong with username and password you can put
a toast*/
}
break;
Now we have to catch this response in our LoginActivity and
take IncomingHandler in Login Activity also
class IncomingHandler extends Handler{
#Override
public void handleMessage(Message msg) {
switch (msg.what){
case ChatService.LOGIN_STATUS:
String C = msg.getData().getString("responseC");
String Status = msg.getData().getString("responseStatus");
String Message = msg.getData().getString("responseMessage");
//Here is your response in LoginActivity, enjoy!!!
break;
default:
super.handleMessage(msg);
}
}
}
final Messenger mMessenger = new Messenger(new IncomingHandler());
public void loginPressed(View v){
usernameStr = usernameField.getText().toString();
passwordStr = passwordField.getText().toString();
if (!bound) return;
Bundle b = new Bundle();
Message msg = Message.obtain(null, ChatService.LOGIN_SATUS,0,0);
try {
b.putString("username", usernameStr);
b.putString("password", passwordStr);
msg.setData(b);
msg.replyTo = mMessenger;
messenger.send(msg);
}
catch (RemoteException e) {
// In this case the service has crashed before we could even
// do anything with it; we can count on soon being
// disconnected (and then reconnected if it can be restarted)
// so there is no need to do anything here.
}
This code is working perfectly, hope it will help you,
Thanks

Permissions Error - Trying to get friends using android facebook sdk

I am trying to add a feature to my android app that allows users to "checkin" with other people tagged to the checkin.
I have the checkins method working no problem and can tag some one by adding the user ID as a parameter (see code below)
public void postLocationTagged(String msg, String tags, String placeID, Double lat, Double lon) {
Log.d("Tests", "Testing graph API location post");
String access_token = sharedPrefs.getString("access_token", "x");
try {
if (isSession()) {
String response = mFacebook.request("me");
Bundle parameters = new Bundle();
parameters.putString("access_token", access_token);
parameters.putString("place", placeID);
parameters.putString("Message",msg);
JSONObject coordinates = new JSONObject();
coordinates.put("latitude", lat);
coordinates.put("longitude", lon);
parameters.putString("coordinates",coordinates.toString());
parameters.putString("tags", tags);
response = mFacebook.request("me/checkins", parameters, "POST");
Toast display = Toast.makeText(this, "Checkin has been posted to Facebook.", Toast.LENGTH_SHORT);
display.show();
Log.d("Tests", "got response: " + response);
if (response == null || response.equals("") ||
response.equals("false")) {
Log.v("Error", "Blank response");
}
} else {
// no logged in, so relogin
Log.d(TAG, "sessionNOTValid, relogin");
mFacebook.authorize(this, PERMS, new LoginDialogListener());
}
} catch(Exception e) {
e.printStackTrace();
}
}
This works fine (I've posted it in case it is of help to anyone else!), the problem i am having is i am trying to create a list of the users friends so they can select the friends they want to tag. I have the method getFriends (see below) which i am then going to use to generate an AlertDialog that the user can select from which in turn will give me the id to use in the above "postLocationTagged" method.
public void getFriends(CharSequence[] charFriendsNames,CharSequence[] charFriendsID, ProgressBar progbar) {
pb = progbar;
try {
if (isSession()) {
String access_token = sharedPrefs.getString("access_token", "x");
friends = charFriendsNames;
friendsID = charFriendsID;
Log.d(TAG, "Getting Friends!");
String response = mFacebook.request("me");
Bundle parameters = new Bundle();
parameters.putString("access_token", access_token);
response = mFacebook.request("me/friends", parameters, "POST");
Log.d("Tests", "got response: " + response);
if (response == null || response.equals("") ||
response.equals("false")) {
Log.v("Error", "Blank response");
}
} else {
// no logged in, so relogin
Log.d(TAG, "sessionNOTValid, relogin");
mFacebook.authorize(this, PERMS, new LoginDialogListener());
}
} catch(Exception e) {
e.printStackTrace();
}
}
When i look at the response in the log it reads:
"got responce: {"error":{"type":"OAuthException", "message":"(#200) Permissions error"}}"
I have looked through the graphAPI documentation and searched for similar questions but to no avail! I'm not sure if i need to request extra permissions for the app or if this is something your just not allowed to do! Any help/suggestions would be greatly appreciated.

You might need the following permissions:
user_checkins
friends_checkins
read_friendlists
manage_friendlists
publish_checkins
Check the related ones from the API docs. Before that, make sure that which line causes this permission error and try to fix it.

The solution is to implement a RequestListener when making the request to the Facebook graph API. I have the new getFriends() method (see below) which uses the AsyncGacebookRunner to request the data.
public void getFriends(CharSequence[] charFriendsNames,String[] sFriendsID, ProgressBar progbar) {
try{
//Pass arrays to store data
friends = charFriendsNames;
friendsID = sFriendsID;
pb = progbar;
Log.d(TAG, "Getting Friends!");
//Create Request with Friends Request Listener
mAsyncRunner.request("me/friends", new FriendsRequestListener());
} catch (Exception e) {
Log.d(TAG, "Exception: " + e.getMessage());
}
}
The AsyncFacebookRunner makes the the request using the custom FriendsRequestListener (see below) which implements the RequestListener class;
private class FriendsRequestListener implements RequestListener {
String friendData;
//Method runs when request is complete
public void onComplete(String response, Object state) {
Log.d(TAG, "FriendListRequestONComplete");
//Create a copy of the response so i can be read in the run() method.
friendData = response;
//Create method to run on UI thread
FBConnectActivity.this.runOnUiThread(new Runnable() {
public void run() {
try {
//Parse JSON Data
JSONObject json;
json = Util.parseJson(friendData);
//Get the JSONArry from our response JSONObject
JSONArray friendArray = json.getJSONArray("data");
//Loop through our JSONArray
int friendCount = 0;
String fId, fNm;
JSONObject friend;
for (int i = 0;i<friendArray.length();i++){
//Get a JSONObject from the JSONArray
friend = friendArray.getJSONObject(i);
//Extract the strings from the JSONObject
fId = friend.getString("id");
fNm = friend.getString("name");
//Set the values to our arrays
friendsID[friendCount] = fId;
friends[friendCount] = fNm;
friendCount ++;
Log.d("TEST", "Friend Added: " + fNm);
}
//Remove Progress Bar
pb.setVisibility(ProgressBar.GONE);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (FacebookError e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
Feel free to use any of this code in your own projects, or ask any questions about it.

You can private static final String[] PERMISSIONS = new String[] {"publish_stream","status_update",xxxx};xxx is premissions