MVP契约类实现fragment之间的联动

API 

package com.example.a1.week2demo2.Api;

public class UserApi {
    //用get方式请求
    //左侧
    public final static String LEFT_API="http://172.17.8.100/small/commodity/v1/findFirstCategory";
    //右侧
    public final static String RIGHT_API="http://172.17.8.100/small/commodity/v1/findSecondCategory?firstCategoryId=";
}

 contract契约类

package com.example.a1.week2demo2.contract;

import com.example.a1.week2demo2.net.RequestCallBack;

import java.util.HashMap;

public interface LoadContract {
    public abstract class LloadPresenter{
        public abstract void LeftPresenter(HashMap<String,String> map);

        public abstract void Rightpresenter(HashMap<String,String> map);
    }
    //model
    interface LloadModel{
      void LeftModel (HashMap<String,String>map, RequestCallBack callBack);

      void RightModel (HashMap<String,String>map, RequestCallBack callBack);
    }
    //view
    interface  LloadView{
        void LeftOnSuccess(String result);
        void leftOnFailUre(String msg);

        void RightOnSuccess(String result);
        void RightOnFailUre(String msg);
    }

}

fragment页面

package com.example.a1.week2demo2.Fragment;

import android.content.Context;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;

import com.example.a1.week2demo2.MyAdapter.LeftAdapter;
import com.example.a1.week2demo2.MyAdapter.RightAdapter;
import com.example.a1.week2demo2.R;
import com.example.a1.week2demo2.contract.LoadContract;
import com.example.a1.week2demo2.entity.LeftBean;
import com.example.a1.week2demo2.entity.RightBean;
import com.example.a1.week2demo2.presenter.LoadPresenter;
import com.google.gson.Gson;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

import java.util.HashMap;

public class Fragmentone extends Fragment implements LoadContract.LloadView,LeftAdapter.onclicklisener {
    private XRecyclerView xrec;
    private XRecyclerView xrec1;
    private LoadPresenter loadPresenter;
    private LeftAdapter leftAdapter;
    private RightAdapter rightAdapter;
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.fragmentyi,container,false);
        xrec = view.findViewById(R.id.xrec);
        xrec1 = view.findViewById(R.id.xrec1);

        xrec.setLayoutManager(new LinearLayoutManager(getActivity()));
        xrec1.setLayoutManager(new GridLayoutManager(getActivity(),3));
        loadPresenter = new LoadPresenter(this);
        leftAdapter = new LeftAdapter(getActivity());
        rightAdapter = new RightAdapter(getActivity());
        loadPresenter.LeftPresenter(new HashMap<String, String>());
        HashMap<String,String> map = new HashMap<>();
        map.put("firstCategoryId","1001002");
        loadPresenter.Rightpresenter(map);
        xrec1.setAdapter(rightAdapter);
        return view;
    }

    @Override
    public void LeftOnSuccess(String result) {
        LeftBean leftBean = new Gson().fromJson(result, LeftBean.class);
        leftAdapter.setList(leftBean.result);
        leftAdapter.setonItemClickLisener(this);
        xrec.setAdapter(leftAdapter);
    }


    @Override
    public void leftOnFailUre(String msg) {

    }

    @Override
    public void RightOnSuccess(String result) {
        RightBean rightBean = new Gson().fromJson(result, RightBean.class);
        rightAdapter.setList(rightBean.result);
    }

    @Override
    public void RightOnFailUre(String msg) {

    }
    private void getLeft(String cid) {
        HashMap<String, String> map = new HashMap<>();
        map.put("firstCategoryId",cid);
        loadPresenter.Rightpresenter(map);
    }


    @Override
    public void click(String cid) {
        getLeft(cid);
    }


}

model

package com.example.a1.week2demo2.model;

import android.os.Handler;

import com.example.a1.week2demo2.Api.UserApi;
import com.example.a1.week2demo2.contract.LoadContract;
import com.example.a1.week2demo2.net.OkHttpCallBack;
import com.example.a1.week2demo2.net.OkHttpUtils;
import com.example.a1.week2demo2.net.RequestCallBack;

import java.util.HashMap;
import java.util.Map;

public class LoadModel implements LoadContract.LloadModel {
    private Handler handler=new Handler();
    private String key;
    private String value;

    @Override
    public void LeftModel(HashMap<String, String> map, final RequestCallBack callBack) {
        OkHttpUtils.getInstance().doGet(UserApi.LEFT_API, new OkHttpCallBack() {
            @Override
            public void Success(final String result) {
                if (callBack!=null){
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            callBack.Success(result);
                        }
                    });
                }
            }

            @Override
            public void Failure(final String msg) {
                if (callBack!=null){
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            callBack.Failure(msg);
                        }
                    });
                }
            }
        });
    }

    @Override
    public void RightModel(HashMap<String, String> map, final RequestCallBack callBack) {
        for (Map.Entry<String, String> map1: map.entrySet()) {
            key = map1.getKey();
            value = map1.getValue();
        }
        String s=UserApi.RIGHT_API+value;
        OkHttpUtils.getInstance().doGet(s, new OkHttpCallBack() {
            @Override
            public void Success(final String result) {
                if (callBack!=null){
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            callBack.Success(result);
                        }
                    });
                }
            }

            @Override
            public void Failure(final String msg) {
                if (callBack!=null){
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                           callBack.Failure(msg);
                        }
                    });
                }
            }
        });
    }
}

leftAdapter

package com.example.a1.week2demo2.MyAdapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.a1.week2demo2.R;
import com.example.a1.week2demo2.entity.LeftBean;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

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

public class LeftAdapter extends XRecyclerView.Adapter<LeftAdapter.ViewHolder> {
    private Context context;
    private List<LeftBean.ResultBean> list;

    public LeftAdapter(Context context) {
        this.context = context;
        list=new ArrayList<>();
    }

    public void setList(List<LeftBean.ResultBean> list) {
        if (list!=null){
            this.list = list;
        }
        notifyDataSetChanged();
    }

    @NonNull
    @Override
    public LeftAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(context).inflate(R.layout.linear1,viewGroup,false);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull LeftAdapter.ViewHolder viewHolder,final int i) {
        LeftBean.ResultBean resultBean = list.get(i);
        viewHolder.name.setText(list.get(i).name);
        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (onclicklisener!=null){
                    onclicklisener.click(list.get(i).id);
                }
            }
        });
    }
    @Override
    public int getItemCount() {
        return list.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        private TextView name;
        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            name=itemView.findViewById(R.id.name);
        }
    }
     private onclicklisener onclicklisener;
    public void setonItemClickLisener(onclicklisener onclicklisener){
        this.onclicklisener = onclicklisener;
    }
    public interface onclicklisener{
        void click(String cid);
    }

}

rightAdapter

package com.example.a1.week2demo2.MyAdapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputConnectionWrapper;
import android.widget.TextView;

import com.example.a1.week2demo2.R;
import com.example.a1.week2demo2.entity.RightBean;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

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

public class RightAdapter extends XRecyclerView.Adapter<RightAdapter.ViewHodler1> {
    private Context context;
    private List<RightBean.ResultBean> list;

    public RightAdapter(Context context) {
        this.context = context;
        list=new ArrayList<>();
    }

    public void setList(List<RightBean.ResultBean> list) {
        if (list!=null){
            this.list = list;
        }
        notifyDataSetChanged();
    }

    @NonNull
    @Override
    public RightAdapter.ViewHodler1 onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(context).inflate(R.layout.linear2,viewGroup,false);
        ViewHodler1 viewHodler1 = new ViewHodler1(view);
        return viewHodler1;
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHodler1 viewHodler1, int i) {
        viewHodler1.name.setText(list.get(i).name);
    }


    @Override
    public int getItemCount() {
        return list.size();
    }

    public class ViewHodler1 extends RecyclerView.ViewHolder {
        private TextView name;
        public ViewHodler1(@NonNull View itemView) {
            super(itemView);
            name=itemView.findViewById(R.id.name);
        }
    }
}

okhttp接口

package com.example.a1.week2demo2.net;

public interface OkHttpCallBack {
    void Success(String result);
    void Failure(String msg);
}

okhttp

package com.example.a1.week2demo2.net;

import android.os.Handler;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.logging.HttpLoggingInterceptor;

public class OkHttpUtils {

    private static OkHttpUtils mInstance;
    private final OkHttpClient okHttpClient;
    private Handler handler = new Handler();
    public static OkHttpUtils getInstance() {
        if (mInstance==null){
            synchronized (OkHttpUtils.class){
                if (mInstance==null){
                    mInstance = new OkHttpUtils();
                }
            }
        }
        return mInstance;
    }

    private OkHttpUtils(){
        HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
        loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
        okHttpClient = new OkHttpClient.Builder()
                .addInterceptor(loggingInterceptor)
                .writeTimeout(5,TimeUnit.SECONDS)
                .connectTimeout(5,TimeUnit.SECONDS)
                .readTimeout(5,TimeUnit.SECONDS)
                .build();
    }
    public void doGet(String url, final OkHttpCallBack okHttpCallback){

        Request build = new Request.Builder().url(url).get().build();

        okHttpClient.newCall(build).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        okHttpCallback.Failure("网络异常");
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

                if (response.code()==200){
                    final String string = response.body().string();
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            okHttpCallback.Success(string);
                        }
                    });
                }
            }
        });
    }
    public void dopost(String url, HashMap<String,String> params, final OkHttpCallBack callBack){
        FormBody.Builder builder = new FormBody.Builder();
        for (Map.Entry<String,String> map:params.entrySet()) {
            builder.add(map.getKey(),map.getValue());
        }
        RequestBody requestBody = builder.build();
        Request request = new Request.Builder().url(url).post(requestBody).build();
        okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                if (callBack!=null){
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            callBack.Failure("网络请求失败");
                        }
                    });
                }
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                if (callBack!=null){
                    if (response.code()==200){
                        final String result = response.body().string();
                        handler.post(new Runnable() {
                            @Override
                            public void run() {
                            callBack.Success(result);
                            }
                        });
                    }
                }
            }
        });

    }

}

mp

package com.example.a1.week2demo2.net;

public interface RequestCallBack {
    void Success(String result);
    void Failure(String msg);
}

presenter

package com.example.a1.week2demo2.presenter;

import android.os.Handler;

import com.example.a1.week2demo2.contract.LoadContract;
import com.example.a1.week2demo2.model.LoadModel;
import com.example.a1.week2demo2.net.RequestCallBack;

import java.util.HashMap;

public class LoadPresenter extends LoadContract.LloadPresenter {
    private LoadContract.LloadView lloadView;
    private final LoadModel loadModel;


    public LoadPresenter(LoadContract.LloadView lloadView) {
        this.lloadView = lloadView;
        loadModel = new LoadModel();

    }

    @Override
    public void LeftPresenter(HashMap<String, String> map) {
        loadModel.LeftModel(map, new RequestCallBack() {
            @Override
            public void Success(String result) {
                if (lloadView!=null){
                    lloadView.LeftOnSuccess(result);
                }
            }

            @Override
            public void Failure(String msg) {
                if (lloadView!=null){
                    lloadView.leftOnFailUre(msg);
                }
            }
        });
    }

    @Override
    public void Rightpresenter(HashMap<String, String> map) {
        loadModel.RightModel(map, new RequestCallBack() {
            @Override
            public void Success(String result) {
                if (lloadView!=null){
                    lloadView.RightOnSuccess(result);
                }
            }

            @Override
            public void Failure(String msg) {
                if (lloadView!=null){
                    lloadView.RightOnFailUre(msg);
                }
            }
        });
    }
}

View

package com.example.a1.week2demo2.View;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {
    private Paint paint;
    private int width;
    private  int height;

    public MyView(Context context) {
        super(context);
    }

    public MyView(Context context, AttributeSet attrs) {
        super(context, attrs);
        paint=new Paint();
        paint.setColor(Color.RED);
    }

    public MyView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.drawCircle(width/2,height/2,100,paint);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        width=getMeasuredWidth();
        height=getMeasuredHeight();
    }
}

main2--BottomTabBar

package com.example.a1.week2demo2;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

import com.example.a1.week2demo2.Fragment.Fragmentone;
import com.example.a1.week2demo2.Fragment.Fragmentthree;
import com.example.a1.week2demo2.Fragment.Fragmenttwo;
import com.hjm.bottomtabbar.BottomTabBar;

public class Main2Activity extends AppCompatActivity {

    private BottomTabBar bot;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        initView();
        bot.init(getSupportFragmentManager())
                .setImgSize(50,50)
                .setFontSize(8)
                .setTabPadding(4,6,10)
                .setChangeColor(Color.BLACK,Color.BLUE)
                .addTabItem("首页",R.drawable.people_flase,Fragmentone.class)
                .addTabItem("分类",R.drawable.see_false,Fragmenttwo.class)
                .addTabItem("我的",R.drawable.message_false,Fragmentthree.class);
    }

    private void initView() {
        bot = (BottomTabBar) findViewById(R.id.bottoms);
    }
}

main动画

package com.example.a1.week2demo2;

import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;

import com.example.a1.week2demo2.View.MyView;

public class MainActivity extends AppCompatActivity {


    private MyView lv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        initData();


    }

    private void initData() {
        getSupportActionBar().hide();
        //找到
        DisplayMetrics displayMetrics = getResources().getDisplayMetrics();

        int height = displayMetrics.heightPixels;

        ObjectAnimator objectAnimator1 = ObjectAnimator.ofFloat(lv, "scaleX", 2, 1);
        ObjectAnimator objectAnimator2 = ObjectAnimator.ofFloat(lv, "alpha", 0, 1);
        ObjectAnimator objectAnimator3 = ObjectAnimator.ofFloat(lv, "translationY", 0, 360);
        ObjectAnimator objectAnimator4 = ObjectAnimator.ofFloat(lv, "rotation", 0, height / 2 - lv.getHeight() / 2);

        AnimatorSet set = new AnimatorSet();
        set.play(objectAnimator1).with(objectAnimator2).with(objectAnimator3).with(objectAnimator4);
        set.setDuration(3000);
        set.start();


        set.addListener(new Animator.AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animation) {

            }

            @Override
            public void onAnimationEnd(Animator animation) {
                //跳转页面
                startActivity(new Intent(MainActivity.this, Main2Activity.class));
            }

            @Override
            public void onAnimationCancel(Animator animation) {

            }

            @Override
            public void onAnimationRepeat(Animator animation) {

            }
        });
    }


    private void initView() {
        lv = (MyView) findViewById(R.id.lv);
    }
}