starry-sky | Starry Sky with Css3 animations | Animation library

private ProgressBar loadingPb;
private TextView cityNameTV ,conditionTV, temperatureTV;
private TextInputEditText cityEdt;
private RecyclerView weatherRV;
private ImageView backIV , iconIV , searchIV;
private ArrayList weatherRVmodels;
private WeatherRVAdapter weatherRVAdapter;
private LocationManager locationManager;
private int PERMISSION_CODE = 1;
private String cityName;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);

    homeRL = findViewById(R.id.idRLHome);
    loadingPb = findViewById(R.id.idPBLoading);
    cityNameTV = findViewById(R.id.idTVCityName);
    conditionTV = findViewById(R.id.idTVCondition);
    temperatureTV = findViewById(R.id.idTVTemperature);
    weatherRV = findViewById(R.id.idRvWeather);
    cityEdt = findViewById(R.id.idEdtCity);
    backIV = findViewById(R.id.idIVback);
    iconIV = findViewById(R.id.idIVIcon);
    searchIV = findViewById(R.id.idIVSearch);
    weatherRVmodels = new ArrayList<>();
    weatherRVAdapter = new WeatherRVAdapter(this,weatherRVmodels);
    weatherRV.setAdapter(weatherRVAdapter);

    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    if(ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED  && ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_COARSE_LOCATION)!= PackageManager.PERMISSION_GRANTED){
        ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.ACCESS_COARSE_LOCATION},PERMISSION_CODE);

    }

    Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
    cityName = getCityName(location.getLongitude(),location.getLatitude());
    getWeatherInfo(cityName);

    searchIV.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String city = cityEdt.getText().toString();
            if(city.isEmpty()){
                Toast.makeText(MainActivity.this, "Please enter a City Name", Toast.LENGTH_SHORT).show();
            }
            else {
                cityNameTV.setText(cityName);
                getWeatherInfo(city);
            }
        }
    });

}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if(requestCode==PERMISSION_CODE){
        if(grantResults.length>0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
            Toast.makeText(MainActivity.this, "Permission granted!", Toast.LENGTH_SHORT).show();
        }
        else{
            Toast.makeText(MainActivity.this, "Please provide the permission", Toast.LENGTH_SHORT).show();
            finish();
        }
    }
}

private String getCityName(double longitude, double latitude){
    String cityName = "Not found";
    Geocoder gcd = new Geocoder(getBaseContext(), Locale.getDefault());
    try{
            List addressList = gcd.getFromLocation(latitude,longitude,10);
            for(Address adr : addressList){
                if(adr!=null){
                    String city = adr.getLocality();
                    if(city!=null &&  !city.equals("")){
                        cityName = city;
                    }
                    else{
                        Log.d("this","CITY NOT FOUND");
                        Toast.makeText(this, "User City not found..", Toast.LENGTH_SHORT).show();
                    }
                }
            }
    }catch (IOException e){
        e.printStackTrace();
    }
    return cityName;
}

private void getWeatherInfo(String cityName){
    String url = "http://api.weatherapi.com/v1/forecast.json?key=3444b7679ba94113ab592316222401 &q="+ cityName +"&days=1&aqi=yes&alerts=yes";
    cityNameTV.setText(cityName);
    RequestQueue requestQueue = Volley.newRequestQueue(MainActivity.this);
    JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener() {
        @Override
        public void onResponse(JSONObject response) {
            loadingPb.setVisibility(View.GONE);
            homeRL.setVisibility(View.VISIBLE);
            weatherRVmodels.clear();

            try {
                String temperature = response.getJSONObject("current").getString("temp_c");
                temperatureTV.setText(temperature+"°C");
                int isDay = response.getJSONObject("current").getInt("is_day");
                String condition = response.getJSONObject("current").getJSONObject("condition").getString("text");
                String conditionIcon = response.getJSONObject("current").getJSONObject("condition").getString("icon");
                Picasso.get().load("http:".concat(conditionIcon)).into(iconIV);
                conditionTV.setText(condition);
                if(isDay == 1){
                    //Morning
                    Picasso.get().load("https://wallpapertops.com/walldb/original/c/a/1/485443.jpg").into(backIV);
                }
                else{
                    Picasso.get().load("https://www.mordeo.org/files/uploads/2018/10/Milky-Way-Starry-Sky-Night-4K-Ultra-HD-Mobile-Wallpaper.jpg").into(backIV);
                }

                JSONObject forecastobj = response.getJSONObject("forecast");
                JSONObject forecastO = forecastobj.getJSONArray("forecastday").getJSONObject(0);
                JSONArray hourArray = forecastO.getJSONArray("hour");

                for(int i=0 ; i