How to use api in android app| how to integrate api in android using retrofit
dependency for retrofit
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
Step 1:- Create a Package name Api make a class
ApiClient.java
package com.example.firebasedatabase.Api;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import okhttp3.OkHttpClient;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
public class ApiClient {
public static Retrofit RETROFIT = null;
public static final String API_BASE_URL ="https://happylife.guru/";
public static Retrofit getClient(){
if (RETROFIT ==null){
OkHttpClient okHttpClient = new OkHttpClient.Builder().build();
Gson gson = new GsonBuilder().create();
RETROFIT = new Retrofit.Builder()
.baseUrl(API_BASE_URL)
.client(okHttpClient)
.addConverterFactory(GsonConverterFactory.create(gson)).build();
} return RETROFIT;
}
}
Step2:- Api Interface
ApiInterface.java
package com.example.firebasedatabase.Api;
import com.example.firebasedatabase.models.Food_Responce;
import retrofit2.Call;
import retrofit2.http.GET;
public interface ApiInterface {
@GET("/getpoetry.php")
Call<Food_Responce> fetchfooddata();
}
Step3:- Fragment_booking.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Fragments.Booking_Fragment">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/reconline"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>Step4:- layout for recyclerview item
food_single_item.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="4dp"
android:gravity="center"
android:orientation="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="@+id/foodname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="13dp"
/>
<TextView
android:id="@+id/foodtitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:singleLine="false"
android:text="Hardwahfduegfheghufehvfehbvfhebvre"
android:textColor="@color/black"
android:textSize="10dp" />
<View
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:background="@color/black"
android:layout_height="1dp"/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>Step5:- FoodAdapter.java
package com.example.firebasedatabase.Adapters;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.firebasedatabase.R;
import com.example.firebasedatabase.models.FoodModel;
import java.util.List;
public class FoodAdapter extends RecyclerView.Adapter<FoodAdapter.holder> {
Context context;
List<FoodModel> foodModels;
public FoodAdapter(Context context, List<FoodModel> foodModels) {
this.context = context;
this.foodModels = foodModels;
}
@NonNull
@Override
public FoodAdapter.holder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.food_single_item,parent,false);
return new holder(view);
}
@Override
public void onBindViewHolder(@NonNull FoodAdapter.holder holder, int position) {
FoodModel model = foodModels.get(position);
holder.foodtitle.setText(model.getPoet_name());
holder.foodname.setText(model.getPoetry_data());
}
@Override
public int getItemCount() {
return foodModels.size();
}
public class holder extends RecyclerView.ViewHolder {
TextView foodname,foodtitle;
public holder(@NonNull View itemView) {
super(itemView);
foodname = itemView.findViewById(R.id.foodname);
foodtitle = itemView.findViewById(R.id.foodtitle);
}
}
}
Step6:- Booking_Fragment.java
package com.example.firebasedatabase.Fragments;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.firebasedatabase.Adapters.FoodAdapter;
import com.example.firebasedatabase.Api.ApiInterface;
import com.example.firebasedatabase.R;
import com.example.firebasedatabase.Utils.Utilmethods;
import com.example.firebasedatabase.databinding.FragmentBookingBinding;
import com.example.firebasedatabase.models.FoodModel;
import com.example.firebasedatabase.models.Food_Responce;
import java.util.List;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
public class Booking_Fragment extends Fragment {
FragmentBookingBinding binding;
ApiInterface apiInterface;
ProgressDialog progressDialog;
FoodAdapter foodAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
binding= FragmentBookingBinding.inflate(inflater,container,false);
Retrofit retrofit = com.example.firebasedatabase.Api.ApiClient.getClient();
apiInterface = retrofit.create(com.example.firebasedatabase.Api.ApiInterface.class);
progressDialog = new ProgressDialog(getActivity());
getfooddata();
return binding.getRoot();
}
private void setadapter(List<FoodModel> foodModels) {
foodAdapter = new FoodAdapter(getActivity(), foodModels);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
linearLayoutManager.setOrientation(RecyclerView.VERTICAL);
binding.reconline.setLayoutManager(linearLayoutManager);
binding.reconline.setAdapter(foodAdapter);
}
public void getfooddata() {
Utilmethods.showDialog(progressDialog);
Log.d("hit","hit" );
apiInterface.fetchfooddata().enqueue(new Callback<Food_Responce>() {
@Override
public void onResponse(Call<Food_Responce> call, Response<Food_Responce> response) {
Log.d("hitres","hitonrea");
try {
if (response != null) {
Log.e("apihitcho","api responce: "+ response.body().getStatus());
if (response.body().getStatus().equals("1")) {
setadapter(response.body().getData());
Utilmethods.exitDialog(progressDialog);
// setadapterhardware(response.body().getData());
} else {
// Toast.makeText(OrderActivity.this, response.body().getStatus(), Toast.LENGTH_SHORT).show();
}
}
} catch (Exception e) {
Log.e("exp", e.getLocalizedMessage());
}
}
@Override
public void onFailure(Call<Food_Responce> call, Throwable t) {
Log.e("failure", t.getLocalizedMessage());
Log.d("hitresfail","hitonrea " + t.getMessage());
}
});
//
}
}Step7:- Create Util folder and create a java class for Utility method .
Utilmethods.java:-
package com.example.firebasedatabase.Utils;
import android.app.ProgressDialog;
import android.content.Context;
public class Utilmethods {
Context context;
public static void showDialog(ProgressDialog progressDialog) {
progressDialog.setMessage("Please Wait....");
progressDialog.setCancelable(true);
progressDialog.show();
}
public static void exitDialog(ProgressDialog progressDialog) {
if (progressDialog != null && progressDialog.isShowing()) {
progressDialog.dismiss();
}
}
}