Xây dụng UI code cho ItemFragment - Tài liệu lập trình android

package com.vantinviet.adayroionline.ui.item;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.VisibleForTesting;
import androidx.databinding.DataBindingUtil;
import androidx.lifecycle.ViewModelProviders;


import com.vantinviet.adayroionline.R;
import com.vantinviet.adayroionline.binding.FragmentDataBindingComponent;
import com.vantinviet.adayroionline.databinding.FragmentItemBinding;
import com.vantinviet.adayroionline.ui.common.PSFragment;
import com.vantinviet.adayroionline.utils.AutoClearedValue;
import com.vantinviet.adayroionline.utils.Constants;
import com.vantinviet.adayroionline.utils.PSDialogMsg;
import com.vantinviet.adayroionline.viewmodel.item.ItemViewModel;

public class ItemFragment extends PSFragment {

    private final androidx.databinding.DataBindingComponent dataBindingComponent = new FragmentDataBindingComponent(this);
    private ItemViewModel itemViewModel;
    private String itemId;
    private PSDialogMsg psDialogMsg;

    @VisibleForTesting
    private AutoClearedValue<FragmentItemDetailBinding> binding;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {


        FragmentItemDetailBinding dataBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_item_detail, container, false, dataBindingComponent);

        binding = new AutoClearedValue<>(this, dataBinding);

        return binding.get().getRoot();

    }

    @Override
    protected void initUIAndActions() {

        psDialogMsg = new PSDialogMsg(getActivity(), false);

        
    }

    @Override
    protected void initViewModels() {

        itemViewModel = ViewModelProviders.of(this, viewModelFactory).get(ItemViewModel.class);

    }

    @Override
    protected void initAdapters() {

    }

    @Override
    protected void initData() {

        if (getActivity() != null) {
            itemId = getActivity().getIntent().getStringExtra(Constants.ITEM_ID);
        }

        if (itemId!= null && !itemId.isEmpty()) {
            itemViewModel.setItemByIdObj(blogId);

            itemViewModel.getItemByIdData().observe(this, result -> {

                if (result != null) {
                    if (result.data != null) {
                        switch (result.status) {
                            case SUCCESS:
                                binding.get().setItem(result.data);
                                break;

                            case ERROR:
                                psDialogMsg.showErrorDialog(getString(R.string.item_detail__error_message), getString(R.string.app__ok));
                                psDialogMsg.show();
                                break;

                            case LOADING:
                                binding.get().setItem(result.data);
                                break;
                        }
                    }
                }
            });
        }

    }
}