Retrofit_library_sir


build.gradle(Module:app)
 dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    //noinspection GradleCompatible
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.1'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.squareup.picasso:picasso:2.71828'
    compile 'com.squareup.retrofit2:retrofit:2.1.0'
    compile 'com.squareup.retrofit2:converter-gson:2.1.0'
}
step 1:Activity_main.xml  //listView j levu
<?xml version="1.0" encoding="utf-8"?>


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="demoproject.aalap.com.retrofit.MainActivity">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/lv"></ListView>
</LinearLayout>
 step 2:Simple.xml  //imageview and textView levu and aene id aapi deve url ma image hoy to j image view levu baki eklu text view lai levu
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

        <ImageView
            android:id="@+id/iv"
            android:background="@mipmap/ic_launcher"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/tv"
            android:textColor="#000"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
</LinearLayout>
step 3:Api.java
//aama java no new class bnave tyare inflace class levo
//"https://simplifiedcoding.net/demos/marvel" google ma serech aa url karvi retrofit ma je url ma last je hoy ae @GET ma lkhvanu ex.aama url ma last marvel last che to marvel GET ma lkeluu che
package demoproject.aalap.com.retrofit;

import java.util.List;

import retrofit2.Call;
import retrofit2.http.GET;

/**
 * Created by ADMIN on 11-06-2018.
 */

public interface Api {
    String BASE_URL = "https://simplifiedcoding.net/demos/";

    @GET("marvel")
    Call<List<Hero>> getHeroes();
}

Hero.java//hero class ie pojo class jema get and set tay
package demoproject.aalap.com.retrofit;

import java.util.List;

import retrofit2.Call;
import retrofit2.http.GET;

/**
 * Created by ADMIN on 11-06-2018.
 */

public class Hero {
        private String name;
        private String realname;
        private String team;
        private String firstappearance;
        private String createdby;
        private String publisher;
        private String imageurl;
        private String bio;

        //aatlu lkhiya pache righ click karvu and generate ma jve anu and gater and sater pr click karvu


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getRealname() {
        return realname;
    }

    public void setRealname(String realname) {
        this.realname = realname;
    }

    public String getTeam() {
        return team;
    }

    public void setTeam(String team) {
        this.team = team;
    }

    public String getFirstappearance() {
        return firstappearance;
    }

    public void setFirstappearance(String firstappearance) {
        this.firstappearance = firstappearance;
    }

    public String getCreatedby() {
        return createdby;
    }

    public void setCreatedby(String createdby) {
        this.createdby = createdby;
    }

    public String getPublisher() {
        return publisher;
    }

    public void setPublisher(String publisher) {
        this.publisher = publisher;
    }

    public String getImageurl() {
        return imageurl;
    }

    public void setImageurl(String imageurl) {
        this.imageurl = imageurl;
    }

    public String getBio() {
        return bio;
    }

    public void setBio(String bio) {
        this.bio = bio;
    }
}
step 4:jsonAdapter.java
package demoproject.aalap.com.retrofit;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.squareup.picasso.Picasso;

import java.util.ArrayList;

/**
 * Created by ADMIN on 11-06-2018.
 */

public class jsonAdapter extends BaseAdapter {
    Context context;
    ArrayList<Hero> arryList=new ArrayList<>();


    public jsonAdapter(Context context, ArrayList<Hero> arryList) {
        this.context = context;
        this.arryList = arryList;
    }

    @Override
    public int getCount() {
        return arryList.size();
    }

    @Override
    public Object getItem(int i) {
        return null;
    }

    @Override
    public long getItemId(int i) {
        return 0;
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        LayoutInflater inflater= (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
        View v=inflater.inflate(R.layout.simple,null);

        ImageView imageView;
        TextView textView;

        imageView=v.findViewById(R.id.iv);
        textView=v.findViewById(R.id.tv);

        Hero h=arryList.get(i);
        textView.setText(h.getName() +"\n"+ h.getRealname() +"\n"+h.getTeam() +"\n"+ h.getFirstappearance() +"\n"+h.getCreatedby() +"\n"+  h.getPublisher()  +"\n"+h.getBio());
        Picasso.get().load(h.getImageurl()).into(imageView);
        return v;
    }
}

step 5:MainActivity.java
package demoproject.aalap.com.retrofit;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.google.gson.Gson;

import java.util.ArrayList;
import java.util.List;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class MainActivity extends AppCompatActivity {
    ListView lv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);



        lv = (ListView) findViewById(R.id.lv);

        //calling the method to display the heroes
        getHeroes();
    }

    private void getHeroes() {
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(Api.BASE_URL)
                .addConverterFactory(GsonConverterFactory.create()) //Here we are using the GsonConverterFactory to directly convert json data to object
                .build();

        Api api = retrofit.create(Api.class);

        Call<List<Hero>> call = api.getHeroes();

        call.enqueue(new Callback<List<Hero>>() {
            @Override
            public void onResponse(Call<List<Hero>> call, Response<List<Hero>> response) {
                List<Hero> heroList = response.body();


                ArrayList<Hero> list  = new ArrayList<>();

                  for (int i = 0; i < heroList.size(); i++) {


                      Hero h1 = new Hero();

                      h1.setName(heroList.get(i).getName());
                      h1.setBio(heroList.get(i).getBio());
                      h1.setRealname(heroList.get(i).getRealname());
                      h1.setTeam(heroList.get(i).getTeam());
                      h1.setFirstappearance(heroList.get(i).getFirstappearance());
                      h1.setCreatedby(heroList.get(i).getCreatedby());
                      h1.setPublisher(heroList.get(i).getPublisher());


                      list.add(h1);



                }

                jsonAdapter adp = new jsonAdapter(MainActivity.this,list);
                  lv.setAdapter(adp);

            }

            @Override
            public void onFailure(Call<List<Hero>> call, Throwable t) {
                Toast.makeText(getApplicationContext(), t.getMessage(), Toast.LENGTH_SHORT).show();
            }
        });
    }

}

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