VscoolOS/app/src/main/java/com/uiuios/aios/activity/GoodsActivity.java

package com.uiuios.aios.activity;

import android.content.Intent;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;

import androidx.databinding.DataBindingUtil;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.google.android.material.tabs.TabLayout;
import com.trello.rxlifecycle4.RxLifecycle;
import com.trello.rxlifecycle4.android.ActivityEvent;
import com.uiuios.aios.R;
import com.uiuios.aios.adapter.GoodsListAdapter;
import com.uiuios.aios.base.BaseDataBindingActivity;
import com.uiuios.aios.bean.BaseResponse;
import com.uiuios.aios.bean.GoodsInfo;
import com.uiuios.aios.bean.GoodsList;
import com.uiuios.aios.bean.GoodsType;
import com.uiuios.aios.databinding.ActivityGoodsBinding;
import com.uiuios.aios.network.NetInterfaceManager;
import com.zackratos.ultimatebarx.ultimatebarx.java.UltimateBarX;

import java.util.HashMap;
import java.util.List;
import java.util.stream.Collectors;

import io.reactivex.rxjava3.annotations.NonNull;
import io.reactivex.rxjava3.core.Observer;
import io.reactivex.rxjava3.disposables.Disposable;

public class GoodsActivity extends BaseDataBindingActivity {
    private static final String TAG = GoodsActivity.class.getSimpleName();

    private ActivityGoodsBinding mBinding;

    private RecyclerView mRecyclerView;
    private GoodsListAdapter mGoodsAdapter;

    private HashMap<String, GoodsType> mGoodsTypeMap;


    @Override
    public boolean setNightMode() {
        return true;
    }

    @Override
    protected void initDataBinding() {
        mBinding = DataBindingUtil.setContentView(this, R.layout.activity_goods);
    }

    /**
     * 初始化视图
     */
    @Override
    public void initView() {
        mBinding.setListener(new Listener());
//        UltimateBarX.statusBarOnly(this)
//                .transparent()
//                .apply();
        UltimateBarX.addStatusBarTopPadding(mBinding.constraintLayout);
        mRecyclerView = mBinding.recyclerView;
        mGoodsAdapter = new GoodsListAdapter();
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        mRecyclerView.setAdapter(mGoodsAdapter);

        mBinding.tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                Log.e(TAG, "onTabSelected: " + tab.getText());
                if (tab.getText() != null && !TextUtils.isEmpty(tab.getText())) {
                    String text = tab.getText().toString();
                    if (mGoodsTypeMap.get(text) != null) {
                        getAllGoods(mGoodsTypeMap.get(text).getId());
                    }
                }

            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {
                Log.e(TAG, "onTabUnselected: " + tab.getText());
            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {
                Log.e(TAG, "onTabReselected: " + tab.getText());
            }
        });
        mBinding.tvOrder.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(GoodsActivity.this, OrderListActivity.class));
            }
        });
    }

    /**
     * 初始化数据
     */
    @Override
    public void initData() {
        getGoodsType();
    }

    private void getGoodsType() {
        NetInterfaceManager.getInstance()
                .getGoodsTypeListObservable()
                .compose(RxLifecycle.bindUntilEvent(getLifecycleSubject(), ActivityEvent.DESTROY))
                .subscribe(new Observer<BaseResponse<List<GoodsType>>>() {
                    @Override
                    public void onSubscribe(@NonNull Disposable d) {
                        Log.e("getGoodsType", "onSubscribe: ");
                    }

                    @Override
                    public void onNext(@NonNull BaseResponse<List<GoodsType>> listBaseResponse) {
                        Log.e("getGoodsType", "onNext: " + listBaseResponse);
                        if (listBaseResponse.code == 200) {
                            mBinding.tabLayout.setVisibility(View.VISIBLE);
                            List<GoodsType> goodsTypeList = listBaseResponse.data;
                            List<String> typeString = goodsTypeList.stream().map(GoodsType::getName).collect(Collectors.toList());
                            String[] type = new String[goodsTypeList.size()];
                            type = typeString.toArray(type);
                            mGoodsTypeMap = new HashMap<>();
                            for (int i = 0; i < type.length; i++) {
                                mGoodsTypeMap.put(type[i], goodsTypeList.get(i));
                                TabLayout.Tab tab = mBinding.tabLayout.newTab();//关键的创建一个Tab,注意这里使用的是已经实例的mTablayout创建的Tab,很容易疏忽使用new Tablayout().new Tab()的方式创建,这个是会报错的.
                                tab.setText(type[i]);
                                if (i == 0) {
                                    mBinding.tabLayout.addTab(tab, 0, true);//设置选择的item
                                } else {
                                    mBinding.tabLayout.addTab(tab);
                                }
                            }
                            getAllGoods(goodsTypeList.get(0).getId());
                        } else {
                            mBinding.tabLayout.setVisibility(View.GONE);
                            getAllGoods();
                        }
                    }

                    @Override
                    public void onError(@NonNull Throwable e) {
                        Log.e("getGoodsType", "onError: " + e.getMessage());
                    }

                    @Override
                    public void onComplete() {
                        Log.e("getGoodsType", "onComplete: ");
                    }
                });
    }


    private void getAllGoods(int type) {
        NetInterfaceManager.getInstance()
                .getGoodsListObservable(type)
                .compose(RxLifecycle.bindUntilEvent(getLifecycleSubject(), ActivityEvent.DESTROY))
                .subscribe(getGoodsListObservable());
    }


    private void getAllGoods() {
        NetInterfaceManager.getInstance()
                .getGoodsListObservable()
                .compose(RxLifecycle.bindUntilEvent(getLifecycleSubject(), ActivityEvent.DESTROY))
                .subscribe(getGoodsListObservable());
    }

    private Observer<BaseResponse<GoodsList>> getGoodsListObservable() {
        return new Observer<BaseResponse<GoodsList>>() {
            @Override
            public void onSubscribe(@NonNull Disposable d) {
                Log.e("getAllGoods", "onSubscribe: ");
            }

            @Override
            public void onNext(@NonNull BaseResponse<GoodsList> listBaseResponse) {
                Log.e("getAllGoods", "onNext: " + listBaseResponse);
                if (listBaseResponse.code == 200) {
                    GoodsList goodsList = listBaseResponse.data;
                    List<GoodsInfo> goodsInfos = goodsList.getData();
                    goodsInfos.sort((o1, o2) -> Integer.compare(o2.getWeight(), o1.getWeight()));
                    mGoodsAdapter.setGoodsInfoList(goodsInfos);
                    mRecyclerView.setVisibility(View.VISIBLE);
                    mBinding.clNodata.setVisibility(View.GONE);
                } else {
                    mRecyclerView.setVisibility(View.GONE);
                    mBinding.clNodata.setVisibility(View.VISIBLE);
                }
            }

            @Override
            public void onError(@NonNull Throwable e) {
                Log.e("getAllGoods", "onError: " + e.getMessage());
            }

            @Override
            public void onComplete() {
                Log.e("getAllGoods", "onComplete: ");
            }
        };
    }

    public class Listener {
        public void back(View view) {
            finish();
        }
    }
}