package com.ouyang.qqui.view;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import com.ouyang.qqui.R;

public class StateLayout extends FrameLayout{
    private View loadingView;
    private View errorView;
    private View successView;
    private View emptyView;
    public StateLayout(Context context) {
        this(context,null);
    }
    public StateLayout(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }
    public StateLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initView();//初始化View
    }
    /**
     * 新增那4個子View：載入中的，載入成功的，載入沒有資料，載入失敗的
     */
    private void initView() {
        //1.載入loadingView
        loadingView = View.inflate(getContext(), R.layout.progressbar_layout, null);
        addView(loadingView);
        //2.新增失敗的View
        errorView = View.inflate(getContext(), R.layout.network404_layout, null);
        Button btn_reload = (Button) errorView.findViewById(R.id.click_again);
        btn_reload.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                //1.先顯示loadingView
                showLoadingView();
                //2.點選的時候再一次重新載入資料
                if(listener!=null){
                    listener.onReload();
                }
            }
        });
        addView(errorView);
        //3.新增空白的view
        emptyView = View.inflate(getContext(), R.layout.empty_view, null);
        addView(emptyView);
        //4.載入成功的View在各介面是不同的，所以提供一個方法bindsucessview動態新增
        //一開始隱藏所有的View
        hideAll();
    }
    /**
     * 新增一個成功的View進來
     */
    public void bindSuccessView(View view){
        successView = view;
        if(successView!=null){
            successView.setVisibility(View.INVISIBLE);//隱藏successView
            //將它新增進來
            addView(successView);
        }
    }
    public void showSuccessView(){
        //先隱藏其他的
        hideAll();
        if(successView!=null){
            successView.setVisibility(View.VISIBLE);
        }
    }
    public void showEmptyView(){
        //先隱藏其他的
        hideAll();
        emptyView.setVisibility(View.VISIBLE);
    }
    public void showErrorView(){
        //先隱藏其他的
        hideAll();
        errorView.setVisibility(View.VISIBLE);
    }
    public void showLoadingView(){
        //先隱藏其他的
        hideAll();
        loadingView.setVisibility(View.VISIBLE);
    }
    /**
     * 隱藏所有的View
     */
    public void hideAll(){
        //設定各介面不可見，同時讓他們不重新layout，要用的時候直接show就行了
        loadingView.setVisibility(View.INVISIBLE);
        errorView.setVisibility(View.INVISIBLE);
        emptyView.setVisibility(View.INVISIBLE);
        if(successView!=null){
            successView.setVisibility(View.INVISIBLE);
        }
    }
    private OnReloadListener listener;
    public void setOnReloadListener(OnReloadListener listener){
        this.listener = listener;
    }
    public interface OnReloadListener{
        /**
         * 當重新載入的按鈕被點選的時候呼叫
         */
        void onReload();
    }
}
 

package com.ouyang.qqui.activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.View;
import android.widget.LinearLayout;
import com.ouyang.qqui.R;
import com.ouyang.qqui.adapter.AddFootViewAdapter;
import com.ouyang.qqui.adapter.MyRecycleradapter;
import com.ouyang.qqui.adapter.ViewHolder;
import com.ouyang.qqui.bean.UnReceiveListBean;
import com.ouyang.qqui.net.BaseCallback;
import com.ouyang.qqui.net.ConnectionUrl;
import com.ouyang.qqui.net.HttpUtils;
import com.ouyang.qqui.view.StateLayout;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import butterknife.Bind;
import butterknife.ButterKnife;
/**
 * Create by oy 2017/6/15 13:50.
 */
public class ShowActivity extends AppCompatActivity {
    private StateLayout stateLayout;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        initView();//初始化介面
        initData();//初始化資料
    }
    private void initView() {
        //為了增加ToolBar新建一個垂直的線性佈局
        LinearLayout lin = new LinearLayout(this);
        lin.setOrientation(LinearLayout.VERTICAL);
        //將ToolBar新增在上面
        lin.addView(View.inflate(this, R.layout.activity_toolbar,null));
        //將我們的各種介面新增在下面
        stateLayout = new StateLayout(this);
        lin.addView(stateLayout);
        //新增一個載入成功的view
        stateLayout.bindSuccessView(getsuccessView());
        //繫結線性佈局
        setContentView(lin);
        ButterKnife.bind(this);
        //首先展示正在載入的view
        stateLayout.showLoadingView();
    }
    public View getsuccessView() {
        View successView = View.inflate(this, R.layout.activity_rec, null);
        return successView;
    }
    private void initData() {
        //初始化資料，請求網路，按照你的框架來，這裡只做展示用
        String url = "哇哈哈哈";
        HttpUtils.getInstance().get(url, new BaseCallback<String>() {
            @Override
            public void onFailure(int requstcode, Exception e) {
                //載入失敗展示錯誤的view
                stateLayout.showErrorView();
            }
            @Override
            public void onSuccess(String data) {
                if (TextUtils.isEmpty(data)){
                    //如果返回的資料為空，展示空介面
                    stateLayout.showEmptyView();
                }else {
                    //如果資料不為空，展示成功的view
                    stateLayout.showSuccessView();
                    //繼續噼裡啪啦一大堆你的操作
                    // ...
                }
            }
        });
    }
}