2020-04-29 10:58:37.475 9969-9986/com.sunofbeaches.taobaounion E/MemoryLeakMonitorManager: MemoryLeakMonitor.jar is not exist!
2020-04-29 10:58:37.475 9969-9969/com.sunofbeaches.taobaounion E/Minikin: Could not get cmap table size!
2020-04-29 10:58:37.553 9969-9969/com.sunofbeaches.taobaounion E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.sunofbeaches.taobaounion, PID: 9969
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sunofbeaches.taobaounion/com.example.wjw.com.myapplication.ui.activity.MainActivity}: java.lang.IllegalStateException: Required view 'main_navigation_bar' with ID 2131296512 for field 'mainNavigationBar' was not found. If this view is optional add '@Nullable' (fields) or '@Optional' (methods) annotation.
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3303)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3411)
        at android.app.ActivityThread.-wrap12(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1994)
        at android.os.Handler.dispatchMessage(Handler.java:108)
        at android.os.Looper.loop(Looper.java:166)
        at android.app.ActivityThread.main(ActivityThread.java:7529)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:245)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:921)
     Caused by: java.lang.IllegalStateException: Required view 'main_navigation_bar' with ID 2131296512 for field 'mainNavigationBar' was not found. If this view is optional add '@Nullable' (fields) or '@Optional' (methods) annotation.
        at butterknife.internal.Utils.findRequiredView(Utils.java:84)
        at butterknife.internal.Utils.findRequiredViewAsType(Utils.java:96)
        at com.example.wjw.com.myapplication.ui.activity.MainActivity_ViewBinding.<init>(MainActivity_ViewBinding.java:27)
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:334)
        at butterknife.ButterKnife.bind(ButterKnife.java:170)
        at butterknife.ButterKnife.bind(ButterKnife.java:99)
        at com.example.wjw.com.myapplication.ui.activity.MainActivity.onCreate(MainActivity.java:47)
        at android.app.Activity.performCreate(Activity.java:7383)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1218)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3256)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3411) 
        at android.app.ActivityThread.-wrap12(Unknown Source:0) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1994) 
        at android.os.Handler.dispatchMessage(Handler.java:108) 
        at android.os.Looper.loop(Looper.java:166) 
        at android.app.ActivityThread.main(ActivityThread.java:7529) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:245) 

        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:921) 

run:

04/29 10:58:32: Launching 'app' on HUAWEI RNE-AL00.

$ adb shell am start -n "com.sunofbeaches.taobaounion/com.example.wjw.com.myapplication.ui.activity.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER

Timed out waiting for process (com.sunofbeaches.taobaounion) to appear on huawei-rne_al00-68UDU17A20001077.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ui.activity.MainActivity">

    <FrameLayout
        android:id="@+id/homepage"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.google.android.material.bottomnavigation.BottomNavigationView
            android:id="@+id/main_navigation_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"

            app:itemIconTint="@drawable/nagation_color"
            app:itemTextColor="@drawable/nagation_color"
            app:menu="@menu/my_nagationview" />
    </FrameLayout>

</RelativeLayout>

package com.example.wjw.com.myapplication.ui.activity;

import android.os.Bundle;
import android.view.MenuItem;
import android.widget.FrameLayout;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;

import com.example.wjw.com.myapplication.R;
import com.example.wjw.com.myapplication.ui.base.BaseFragment;
import com.example.wjw.com.myapplication.ui.fragment.HomeFragment;
import com.example.wjw.com.myapplication.ui.fragment.RedPacketFragment;
import com.example.wjw.com.myapplication.ui.fragment.SearchFragment;
import com.example.wjw.com.myapplication.ui.fragment.SelectedFragment;
import com.example.wjw.com.myapplication.utils.LogUtils;
import com.google.android.material.bottomnavigation.BottomNavigationView;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.Unbinder;

public class MainActivity extends AppCompatActivity {


    private static final String TAG = "MainActivity";
    @BindView(R.id.main_navigation_bar)
    BottomNavigationView mainNavigationBar;

    @BindView(R.id.homepage)
    FrameLayout homepage;

    private Fragment mhomeFragment;
    private Fragment mselectedFragment;
    private Fragment  mredPacketFragment;
    private Fragment msearchFragment;
    FragmentManager mFm = getSupportFragmentManager();
   private Unbinder mBind;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        
        mBind=ButterKnife.bind(this);
        ButterKnife.bind(this);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);


        initfragments();

        initlister();

    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
       if (mBind!=null){
           mBind.unbind();
       }
    }

    private void initlister() {
        mainNavigationBar.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {

                if (menuItem.getItemId() == R.id.home) {

                    LogUtils.d(this, "转到首页");
              switchFragment ((BaseFragment) mhomeFragment);

                } else if (menuItem.getItemId() == R.id.select) {
                    LogUtils.i(this, "转到精选");
                  switchFragment ((BaseFragment) mselectedFragment);
                } else if (menuItem.getItemId() == R.id.redpacket) {
                    LogUtils.w(this, "转到特惠");
                  switchFragment ((BaseFragment) mredPacketFragment);
                } else if (menuItem.getItemId() == R.id.search) {
                    LogUtils.e(this, "转到搜索");
                  switchFragment ((BaseFragment) msearchFragment);
                }
                return true;
            }
        });
    }

    private void switchFragment(BaseFragment targetFragment) {
   FragmentTransaction fragmentTransaction=mFm.beginTransaction();
   fragmentTransaction.replace(R.id.homepage, targetFragment);
   fragmentTransaction.commit();


    }


    private void initfragments() {
        mhomeFragment= new HomeFragment();
        mselectedFragment= new SelectedFragment();
        mredPacketFragment= new RedPacketFragment();
        msearchFragment= new SearchFragment();
       mFm=getSupportFragmentManager();
        switchFragment ((BaseFragment) mhomeFragment);

}
}
package com.example.wjw.com.myapplication.ui.fragment;


import android.view.View;

import androidx.viewpager.widget.ViewPager;

import com.example.wjw.com.myapplication.R;
import com.example.wjw.com.myapplication.model.domain.Categories;
import com.example.wjw.com.myapplication.presenter.iHomepresenter;
import com.example.wjw.com.myapplication.presenter.impl.Homepresenterimpl;
import com.example.wjw.com.myapplication.ui.adapter.HomePagerAdapter;
import com.example.wjw.com.myapplication.ui.base.BaseFragment;
import com.example.wjw.com.myapplication.utils.LogUtils;
import com.example.wjw.com.myapplication.view.iHomecallback;
import com.google.android.material.tabs.TabLayout;

import butterknife.BindView;

public class HomeFragment extends BaseFragment implements  iHomecallback {
        @BindView(R.id.home_indacater)
         public TabLayout mTabLayout;
         private iHomepresenter mhomepresenter;
         @BindView(R.id.home_pager)
         public ViewPager homePager;
         private HomePagerAdapter mhomePagerAdapter ;


    @Override
    protected int getRootViewResId() {
        return R.layout.fragment_home;}

    @Override
    protected void initView(View rootView) {
        mTabLayout.setupWithViewPager(homePager);
        //给ViewPager设置适配器
    mhomePagerAdapter=new HomePagerAdapter(getChildFragmentManager());
    homePager.setAdapter(mhomePagerAdapter);
    }

    @Override
    protected void initpresenter() {
        //创建Presenter
        mhomepresenter = new Homepresenterimpl();
        mhomepresenter.registerCallback(this);
    }

    @Override
    protected void  LoadData() {
        //加载数据
        mhomepresenter.getCategrories();

    }




    @Override
    public void onCategoriesloaded(Categories categories) {
        LogUtils.d(this,"onCategroiesloaded....");
        //加载的数据会从这里回来
        if(mhomePagerAdapter!=null){
            mhomePagerAdapter.setCategories(categories);

        }
        }




    @Override
    protected void release() {
        //取消回到注册
        if (mhomepresenter!=null){
            mhomepresenter.unregisterCallback(this);
        };

    }



    }

//package com.example.wjw.com.myapplication.ui.adapter;
//
//import androidx.annotation.Nullable;
//import androidx.fragment.app.Fragment;
//import androidx.fragment.app.FragmentManager;
//import androidx.fragment.app.FragmentPagerAdapter;
//
//import com.example.wjw.com.myapplication.model.domain.categories;
//import com.example.wjw.com.myapplication.ui.fragment.HomePagerFragment;
//
//import java.util.ArrayList;
//import java.util.List;
//
//
//public class HomePagerAdapter extends FragmentPagerAdapter {
//
//
//
//    private   List<categories.DataBean> categorylist=new ArrayList<>();
//
//    public HomePagerAdapter(FragmentManager fm) {
//        super(fm);
//    }
//
//
//
//
//    @Nullable
//    @Override
//    public CharSequence getPageTitle(int position) {
//        return categorylist.get(position).getTitle();
//    }
//
//    @Override
//    public Fragment getItem(int position) {
//        return new HomePagerFragment();
//    }
//
//    @Override
//    public int getCount() {
//        return categorylist.size();
//    }
//
//    public void setcategories(categories categories) {
//        categorylist.clear();
//      List<categories.DataBean> data=categories.getData();
//      this.categorylist.addAll(data);
//      notifyDataSetChanged();
//    }
//}

package com.example.wjw.com.myapplication.ui.adapter;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;

import com.example.wjw.com.myapplication.model.domain.Categories;
import com.example.wjw.com.myapplication.ui.fragment.HomePagerFragment;
import com.example.wjw.com.myapplication.utils.LogUtils;

import java.util.ArrayList;
import java.util.List;

public class HomePagerAdapter extends FragmentPagerAdapter {


    private List<Categories.DataBean> categoryList = new ArrayList<>();

    public HomePagerAdapter(@NonNull FragmentManager fm) {
        super(fm,BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);

    }
    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
//        return super.getPageTitle(position);

        return categoryList.get(position).getTitle();
    }

    @NonNull
    @Override
    public Fragment getItem(int position) {
//        return null;
        LogUtils.d(this,"getItem - > " + position);
        Categories.DataBean dataBean = categoryList.get(position);
        HomePagerFragment homePagerFragment = new HomePagerFragment();
        return homePagerFragment;
    }

    @Override
    public int getCount() {
//        return 0;
        return categoryList.size();
    }

    public void setCategories(Categories categories) {
        categoryList.clear();
        List<Categories.DataBean> data = categories.getData();
        this.categoryList.addAll(data);
        LogUtils.d(this,"size -- > " + this.categoryList.size());
        notifyDataSetChanged() ;
    }
}