manoj-mili

public class BaseApp extends Application {

    @Override
    public void onCreate() {
        super.onCreate();

        AndroidNetworking.initialize(getApplicationContext());
        if (BuildConfig.DEBUG) {
            //For logging api request and response
            AndroidNetworking.enableLogging(HttpLoggingInterceptor.Level.BODY);

manoj-mili

static final String URLEX = "https://jsonplaceholder.typicode.com/users/{user_id}/albums";

AndroidNetworking.get(URLEx).addPathParameter("user_id","1").build().getAsJSONArray(new JSONArrayRequestListener() {
            @Override
            public void onResponse(JSONArray response) {
                // Once data is received it will available for processing
            }

            @Override
            public void onError(ANError anError) {

manoj-mili

public static final String URLEx = "https://jsonplaceholder.typicode.com/users/{user_id}/albums";

Rx2AndroidNetworking.get(URLEx).addPathParameter("user_id", "1").build().getJSONArraySingle().doOnSuccess(jsonArray -> {
            //Handle once data is available
        }).doOnError(throwable -> {
            //Handle in case of Error
        }).subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe();

manoj-mili

class User {

            private String title;
            private int id, userId;
        }
        //Mention the model class to which the data should be parsed if it is list or single just change 
        // the getType and same can be done for normal api requests
        Rx2AndroidNetworking.get(URLEx).addPathParameter("user_id", "1").build().
                    getObjectListSingle(User.class).
                    doOnSuccess(jsonArray -> {

manoj-mili

class PostAdapter :
    ListAdapter<Post, PostAdapter.ViewHolder>(TaskDiffCallBack()) {


    //This check runs on background thread
    class TaskDiffCallBack : DiffUtil.ItemCallback<Post>() {
        override fun areItemsTheSame(oldItem: Post, newItem: Post): Boolean {
            Log.d(TAG,Thread.currentThread().name)
            return oldItem.id == newItem.id;
        }

manoj-mili

package com.carnot.recyclerviewlistadapter

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {
    lateinit var adapter: PostAdapter
    override fun onCreate(savedInstanceState: Bundle?) {

manoj-mili

  
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        //to access data from list we have getItem(position) and no need to implement 
        val task = getItem(position)
        holder.tvDesc.text = task.body
        holder.tvTitle.text = task.title
    }

//Also no need to implement getItemCount()

manoj-mili

//Don't add validation in this function as the name of the function only suggest to add it to db
fun savePhoneNumber(phoneNumber: String) {
  if (!phoneNumber.equals("") && phoneNumber.length == 10 && phoneNumber regex check and etc...) {
    dao.saveNumber(phoneNumber)
  }   
}

//Do only pass numbers post validation
fun savePhoneNumber(phoneNumber: String) {
    dao.saveNumber(phoneNumber)

manoj-mili

// Don't pass too many arguments
fun saveUserDetails(
    firstName: String,
    lastName: String,
    phoneNumber: String,
    gender: String,
    age: Int
) {}

// Do create a type and pass it as function param

manoj-mili

//Helper class which hides the library and exposes only required functionality
class ImageLoader {

    fun setImageFromUrl(url: String, imageView: SomeViewHolder) {
        // Do your Picasso or what ever library related stuff here
        Picasso.get().load(url).into(imageView)
    }
}

class SomeScreen {