Cfrgtkky

I'm trying unsuccessfully to consume an API on Android using Retrofit library but while using POSTMAN I can see the expected results.

POSTMAN SETTING

• The api url (base+controller)




• HTTP Method set to POST




• Clicked the from-data or x-www-form-urlencoded




• Then i pass the two params on the key/value fields.

ANDROID RETROFIT SETTING

@POST("/GetDetailWithMonthWithCode")

void getLandingPageReport(@Query("code") String code,

                          @Query("monthact") String monthact,

                          Callback<LandingPageReport> cb);



@FormUrlEncoded

@POST("/GetDetailWithMonthWithCode")

void getLandingPageReport(@Field("code") String code,

                          @Field("monthact") String monthact,

                          Callback<LandingPageReport> cb);

None of this options works. But am getting {} as result.

UPDATE

Same settings by using the standard HttpClient(and HttpPost) class works fine.

HttpClient client = new DefaultHttpClient();

HttpPost post = new HttpPost(url);



List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();

urlParameters.add(new BasicNameValuePair("code", "testcode"));

urlParameters.add(new BasicNameValuePair("monthact", "feb-2015"));



post.setEntity(new UrlEncodedFormEntity(urlParameters));



HttpResponse response = client.execute(post);

Why I can't do this request and get the correct response in Retrofit?

UPDATE 2

@POST("/GetDetailWithMonthWithCode")

void getLandingPageReport(@Query("code") String code,

                          @Query("monthact") String monthact,

                          Callback<List<LandingPageReport>> cb);



@FormUrlEncoded

@POST("/GetDetailWithMonthWithCode")

void getLandingPageReport(@Field("code") String code,

                          @Field("monthact") String monthact,

                          Callback<List<LandingPageReport>>> cb);

After playing around I think I've found the source of the problem. I've updated my retrofit code to receive List<LandingPageReport>. But now this error occur

retrofit.RetrofitError: com.google.gson.JsonSyntaxException:
java.lang.IllegalStateException: Expected BEGIN_ARRAY but was
BEGIN_OBJECT at line 1 column 2 path $

The reason is that i consume 2 api's (webapi and wcf). All my other json response are arrays of objects. [{},{}] but in this call I've received this

{

  "GetDetailWithMonthWithCodeResult": [

     {

        "code": "test",

        "field1": "test",

     }

   ]

}

But still I can't manage to parse the response.

This is a simple solution where we do not need to use JSON

public interface RegisterAPI {

@FormUrlEncoded

@POST("/RetrofitExample/insert.php")

public void insertUser(

        @Field("name") String name,

        @Field("username") String username,

        @Field("password") String password,

        @Field("email") String email,

        Callback<Response> callback);

}

method to send data

private void insertUser(){

    //Here we will handle the http request to insert user to mysql db

    //Creating a RestAdapter

    RestAdapter adapter = new RestAdapter.Builder()

            .setEndpoint(ROOT_URL) //Setting the Root URL

            .build(); //Finally building the adapter



    //Creating object for our interface

    RegisterAPI api = adapter.create(RegisterAPI.class);



    //Defining the method insertuser of our interface

    api.insertUser(



            //Passing the values by getting it from editTexts

            editTextName.getText().toString(),

            editTextUsername.getText().toString(),

            editTextPassword.getText().toString(),

            editTextEmail.getText().toString(),



            //Creating an anonymous callback

            new Callback<Response>() {

                @Override

                public void success(Response result, Response response) {

                    //On success we will read the server's output using bufferedreader

                    //Creating a bufferedreader object

                    BufferedReader reader = null;



                    //An string to store output from the server

                    String output = "";



                    try {

                        //Initializing buffered reader

                        reader = new BufferedReader(new InputStreamReader(result.getBody().in()));



                        //Reading the output in the string

                        output = reader.readLine();

                    } catch (IOException e) {

                        e.printStackTrace();

                    }



                    //Displaying the output as a toast

                    Toast.makeText(MainActivity.this, output, Toast.LENGTH_LONG).show();

                }



                @Override

                public void failure(RetrofitError error) {

                    //If any error occured displaying the error as toast

                    Toast.makeText(MainActivity.this, error.toString(),Toast.LENGTH_LONG).show();

                }

            }

    );

}

Now we can get the post request using php aur any other server side scripting.

Source Android Retrofit Tutorial

build.gradle

      compile 'com.google.code.gson:gson:2.6.2'



      compile 'com.squareup.retrofit2:retrofit:2.1.0'// compulsory



      compile 'com.squareup.retrofit2:converter-gson:2.1.0' //for retrofit conversion

=========================================================

**Login APi Put Two Parameter**

=========================================================

    {

        "UserId": "1234",

        "Password":"1234"

    }



=========================================================

**Login Response**

=========================================================

    {

        "UserId": "1234",

        "FirstName": "Keshav",

        "LastName": "Gera",

        "ProfilePicture": "312.113.221.1/GEOMVCAPI/Files/1.500534651736E12p.jpg"

    }

=========================================================

**APIClient.java**

=========================================================



    import retrofit2.Retrofit;

    import retrofit2.converter.gson.GsonConverterFactory;



    class APIClient {



        public static final String BASE_URL = "Your Base Url ";

        private static Retrofit retrofit = null;



        public static Retrofit getClient() {

            if (retrofit == null) {

                retrofit = new Retrofit.Builder()

                        .baseUrl(BASE_URL)

                        .addConverterFactory(GsonConverterFactory.create())

                        .build();

            }

            return retrofit;

        }

    }

=========================================================

**APIInterface interface**

=========================================================

    interface APIInterface {



        @POST("LoginController/Login")

        Call<LoginResponse> createUser(@Body LoginResponse login);

    }



=========================================================

**Login Pojo**

=========================================================



    package pojos;



    import com.google.gson.annotations.SerializedName;



    public class LoginResponse {





        @SerializedName("UserId")

        public String UserId;

        @SerializedName("FirstName")

        public String FirstName;

        @SerializedName("LastName")

        public String LastName;

        @SerializedName("ProfilePicture")

        public String ProfilePicture;

        @SerializedName("Password")

        public String Password;

        @SerializedName("ResponseCode")

        public String ResponseCode;

        @SerializedName("ResponseMessage")

        public String ResponseMessage;



        public LoginResponse(String UserId, String Password) {

            this.UserId = UserId;

            this.Password = Password;

        }



        public String getUserId() {

            return UserId;

        }



        public String getFirstName() {

            return FirstName;

        }



        public String getLastName() {

            return LastName;

        }



        public String getProfilePicture() {

            return ProfilePicture;

        }



        public String getResponseCode() {

            return ResponseCode;

        }



        public String getResponseMessage() {

            return ResponseMessage;

        }

    }



=========================================================

**MainActivity**

=========================================================



    package com.keshav.retrofitloginexampleworkingkeshav;



    import android.app.Dialog;

    import android.os.Bundle;

    import android.support.v7.app.AppCompatActivity;

    import android.util.Log;

    import android.view.View;

    import android.widget.Button;

    import android.widget.EditText;

    import android.widget.TextView;

    import android.widget.Toast;



    import pojos.LoginResponse;

    import retrofit2.Call;

    import retrofit2.Callback;

    import retrofit2.Response;

    import utilites.CommonMethod;



    public class MainActivity extends AppCompatActivity {



        TextView responseText;

        APIInterface apiInterface;



        Button loginSub;

        EditText et_Email;

        EditText et_Pass;

        private Dialog mDialog;

        String userId;

        String password;



        @Override

        protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);



            apiInterface = APIClient.getClient().create(APIInterface.class);



            loginSub = (Button) findViewById(R.id.loginSub);

            et_Email = (EditText) findViewById(R.id.edtEmail);

            et_Pass = (EditText) findViewById(R.id.edtPass);



            loginSub.setOnClickListener(new View.OnClickListener() {

                @Override

                public void onClick(View v) {

                    if (checkValidation()) {

                        if (CommonMethod.isNetworkAvailable(MainActivity.this))

                            loginRetrofit2Api(userId, password);

                        else

                            CommonMethod.showAlert("Internet Connectivity Failure", MainActivity.this);

                    }

                }

            });

        }



        private void loginRetrofit2Api(String userId, String password) {

            final LoginResponse login = new LoginResponse(userId, password);

            Call<LoginResponse> call1 = apiInterface.createUser(login);

            call1.enqueue(new Callback<LoginResponse>() {

                @Override

                public void onResponse(Call<LoginResponse> call, Response<LoginResponse> response) {

                    LoginResponse loginResponse = response.body();



                    Log.e("keshav", "loginResponse 1 --> " + loginResponse);

                    if (loginResponse != null) {

                        Log.e("keshav", "getUserId          -->  " + loginResponse.getUserId());

                        Log.e("keshav", "getFirstName       -->  " + loginResponse.getFirstName());

                        Log.e("keshav", "getLastName        -->  " + loginResponse.getLastName());

                        Log.e("keshav", "getProfilePicture  -->  " + loginResponse.getProfilePicture());



                        String responseCode = loginResponse.getResponseCode();

                        Log.e("keshav", "getResponseCode  -->  " + loginResponse.getResponseCode());

                        Log.e("keshav", "getResponseMessage  -->  " + loginResponse.getResponseMessage());

                        if (responseCode != null && responseCode.equals("404")) {

                            Toast.makeText(MainActivity.this, "Invalid Login Details n Please try again", Toast.LENGTH_SHORT).show();

                        } else {

                            Toast.makeText(MainActivity.this, "Welcome " + loginResponse.getFirstName(), Toast.LENGTH_SHORT).show();

                        }

                    }

                }



                @Override

                public void onFailure(Call<LoginResponse> call, Throwable t) {

                    Toast.makeText(getApplicationContext(), "onFailure called ", Toast.LENGTH_SHORT).show();

                    call.cancel();

                }

            });

        }



        public boolean checkValidation() {

            userId = et_Email.getText().toString();

            password = et_Pass.getText().toString();



            Log.e("Keshav", "userId is -> " + userId);

            Log.e("Keshav", "password is -> " + password);



            if (et_Email.getText().toString().trim().equals("")) {

                CommonMethod.showAlert("UserId Cannot be left blank", MainActivity.this);

                return false;

            } else if (et_Pass.getText().toString().trim().equals("")) {

                CommonMethod.showAlert("password Cannot be left blank", MainActivity.this);

                return false;

            }

            return true;

        }

    }

===========================================

**CommonMethod.java**

===========================================



    public class CommonMethod {





        public static final String DISPLAY_MESSAGE_ACTION =

                "com.codecube.broking.gcm";



        public static final String EXTRA_MESSAGE = "message";



        public  static boolean isNetworkAvailable(Context ctx) {

            ConnectivityManager connectivityManager

                    = (ConnectivityManager)ctx.getSystemService(Context.CONNECTIVITY_SERVICE);

            NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();

            return activeNetworkInfo != null && activeNetworkInfo.isConnected();

        }



        public static void showAlert(String message, Activity context) {



            final AlertDialog.Builder builder = new AlertDialog.Builder(context);

            builder.setMessage(message).setCancelable(false)

                    .setPositiveButton("OK", new DialogInterface.OnClickListener() {

                        public void onClick(DialogInterface dialog, int id) {



                        }

                    });

            try {

                builder.show();

            } catch (Exception e) {

                e.printStackTrace();

            }



        }

    }

=========================================================

**activity_main.xml**

=========================================================

    <LinearLayout android:layout_width="wrap_content"

        android:layout_height="match_parent"

        android:focusable="true"

        android:focusableInTouchMode="true"

        android:orientation="vertical"

        xmlns:android="http://schemas.android.com/apk/res/android">



            <ImageView

                android:id="@+id/imgLogin"

                android:layout_width="200dp"

                android:layout_height="150dp"

                android:layout_gravity="center"

                android:layout_marginTop="20dp"

                android:padding="5dp"

                android:background="@mipmap/ic_launcher_round"

                />



            <TextView

                android:id="@+id/txtLogo"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_below="@+id/imgLogin"

                android:layout_centerHorizontal="true"

                android:text="Holostik Track and Trace"

                android:textSize="20dp"

                android:visibility="gone" />



            <android.support.design.widget.TextInputLayout

                android:id="@+id/textInputLayout1"

                android:layout_width="fill_parent"

                android:layout_height="wrap_content"

                android:layout_marginLeft="@dimen/box_layout_margin_left"

                android:layout_marginRight="@dimen/box_layout_margin_right"

                android:layout_marginTop="8dp"

                android:padding="@dimen/text_input_padding">



                <EditText

                    android:id="@+id/edtEmail"

                    android:layout_width="fill_parent"

                    android:layout_height="wrap_content"

                    android:layout_marginTop="5dp"

                    android:ems="10"

                    android:fontFamily="sans-serif"

                    android:gravity="top"

                    android:hint="Login ID"

                    android:maxLines="10"

                    android:paddingLeft="@dimen/edit_input_padding"

                    android:paddingRight="@dimen/edit_input_padding"

                    android:paddingTop="@dimen/edit_input_padding"

                    android:singleLine="true"></EditText>



            </android.support.design.widget.TextInputLayout>



            <android.support.design.widget.TextInputLayout

                android:id="@+id/textInputLayout2"

                android:layout_width="fill_parent"

                android:layout_height="wrap_content"

                android:layout_below="@+id/textInputLayout1"

                android:layout_marginLeft="@dimen/box_layout_margin_left"

                android:layout_marginRight="@dimen/box_layout_margin_right"

                android:padding="@dimen/text_input_padding">



                <EditText

                    android:id="@+id/edtPass"

                    android:layout_width="match_parent"

                    android:layout_height="wrap_content"

                    android:focusable="true"

                    android:fontFamily="sans-serif"

                    android:hint="Password"

                    android:inputType="textPassword"

                    android:paddingLeft="@dimen/edit_input_padding"

                    android:paddingRight="@dimen/edit_input_padding"

                    android:paddingTop="@dimen/edit_input_padding"

                    android:singleLine="true" />



            </android.support.design.widget.TextInputLayout>



            <RelativeLayout

                android:id="@+id/rel12"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_below="@+id/textInputLayout2"

                android:layout_marginTop="10dp"

                android:layout_marginLeft="10dp"

                >



                <Button

                    android:id="@+id/loginSub"

                    android:layout_width="wrap_content"

                    android:layout_height="45dp"

                    android:layout_alignParentRight="true"

                    android:layout_centerVertical="true"

                    android:background="@drawable/border_button"

                    android:paddingLeft="30dp"

                    android:paddingRight="30dp"

                    android:layout_marginRight="10dp"

                    android:text="Login"

                    android:textColor="#ffffff" />    

            </RelativeLayout>



    </LinearLayout>

I have found the solution. The issue was a problem in my classes structure. So i updated them like the following samples.

public class LandingPageReport {



    private ArrayList<LandingPageReportItem> GetDetailWithMonthWithCodeResult;



    // + Getter Setter methods

}



public class LandingPageReportItem {



    private String code;



    private String field1;



    // + Getter Setter methods

}

And then i use this retrofit configuration

@POST("/GetDetailWithMonthWithCode")

void getLandingPageReport(@Field("code") String code,

                          @Field("monthact") String monthact,

                          Callback<LandingPageReport> cb);