載入LoadingLayout佈局，是借用的網上的一個程式碼例項，來完成的，我在此也感謝作者，現在借用一下，來做一個實體的筆記記錄，只是記錄而且，它可以結合前面的記app斷網廣播展示佈局來更好的展現他的功能。

一個LoadingLayout，可以展示，空資料介面，網路載入錯誤介面，載入Loading頁面和我們想好的內容。先們來看一看效果：

空資料
網路載入錯誤
Loading載入頁面
我們想要的展示內容

而具體怎麼使用呢：

首先將他放在我們需要使用的佈局中,自己定義各種的展示佈局頁面。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 

    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#eaeaea"
    android:fitsSystemWindows="true"
    android:windowTranslucentNavigation="true"
    android:orientation="vertical">

    <include layout="@layout/communal_tool_bar"
 
 />

    <com.yange.chexinbang.base.base.communalview.LoadingLayout
        android:id="@+id/loading_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:emptyView="@layout/communal_nodata_layout"> 
        <!--備註：在需要展示的佈局外面套上就行，emptyView是載入空資料的佈局-->

        <cn.bingoogolapple
 
.refreshlayout.BGARefreshLayout
            android:id="@+id/carfile_list_refreshlayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#fff">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/carfile_list_rv"
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_weight="1"
                android:background="#eaeaea">


            </android.support.v7.widget.RecyclerView>

        </cn.bingoogolapple.refreshlayout.BGARefreshLayout>

    </com.yange.chexinbang.base.base.communalview.LoadingLayout>

</LinearLayout>

LoadingLayout的原始碼：

public class LoadingLayout extends FrameLayout {

    private int emptyView, errorView, loadingView;
    private OnClickListener onLoadingClickListener;
    private Animation rightCircle;    //向右旋轉的360度的動畫

    private TextView nodata_text;
    private Button nodata_bt;

    public ImageView circle;
    private LinearLayout communal_failload_layout;

    public LoadingLayout(Context context) {
        this(context, null);
    }


    public LoadingLayout(Context context, AttributeSet attrs) {
        this(context, attrs, -1);
    }
    public LoadingLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

        TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.LoadingLayout, 0, 0);
        try {
            emptyView = a.getResourceId(R.styleable.LoadingLayout_emptyView, R.layout.communal_nodata_layout); //空資料頁面
            errorView = a.getResourceId(R.styleable.LoadingLayout_errorView, R.layout.communal_fail_load_layout);//網路失敗頁面
            loadingView = a.getResourceId(R.styleable.LoadingLayout_loadingView, R.layout.communal_loading_view);//載入頁面

            LayoutInflater inflater = LayoutInflater.from(getContext());
            inflater.inflate(emptyView, this, true);
            inflater.inflate(errorView, this, true);
            inflater.inflate(loadingView, this, true);
            initViews();

        } finally {
            a.recycle();
        }

    }

    //初始化檢視
    private void initViews() {
        rightCircle = new RotateAnimation(0,360,
                Animation.RELATIVE_TO_SELF,0.5f,
                Animation.RELATIVE_TO_SELF,0.5f);
        rightCircle.setDuration(500);
        rightCircle.setFillAfter(true);

        nodata_bt = (Button) findViewById(R.id.communal_nodata_btn);
        communal_failload_layout = (LinearLayout) findViewById(R.id.communal_failload_layout);

        nodata_text = (TextView) findViewById(R.id.communal_nodata_message_text);
        circle = (ImageView) findViewById(R.id.communal_failload_tryagain_img);



    }


    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();

        for (int i = 0; i < getChildCount() - 1; i++) {
            getChildAt(i).setVisibility(GONE);
        }

        nodata_bt.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (onLoadingClickListener != null) {
                    onLoadingClickListener.onClick(v);
                }
            }
        });

        communal_failload_layout.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(final View v) {
                if (onLoadingClickListener != null) {
                    circle.startAnimation(rightCircle);
                    new Handler().postDelayed(new Runnable() {
                        public void run() {
                            onLoadingClickListener.onClick(v);
                        }

                    }, 600);

                }
            }
        });


    }

    public void setOnRetryClickListener(OnClickListener onLoadingClickListener) {
        this.onLoadingClickListener = onLoadingClickListener;
    }
//顯示空資料頁面
    public void showEmpty() {
        for (int i = 0; i < this.getChildCount(); i++) {
            View child = this.getChildAt(i);
            if (i == 0) {
                child.setVisibility(VISIBLE);
            } else {
                child.setVisibility(GONE);
            }
        }
    }

//顯示網路失敗頁面
    public void showError() {

        for (int i = 0; i < this.getChildCount(); i++) {
            View child = this.getChildAt(i);
            if (i == 1) {
                child.setVisibility(VISIBLE);
            } else {
                child.setVisibility(GONE);
            }
        }
    }
//顯示載入Loading頁面
    public void showLoading() {
        for (int i = 0; i < this.getChildCount(); i++) {
            View child = this.getChildAt(i);
            if (i == 2) {
                child.setVisibility(VISIBLE);
            } else {
                child.setVisibility(GONE);
            }
        }
    }
//顯示想要載入的內容
    public void showContent() {
        for (int i = 0; i < this.getChildCount(); i++) {
            View child = this.getChildAt(i);
            if (i == 3) {
                child.setVisibility(VISIBLE);
            } else {
                child.setVisibility(GONE);
            }
        }
    }
//下面方法，自己新增的，可以不要
     public void setNodataText(String showText) {
        nodata_text.setText(showText);

    }

   public void setNodataBt(int visibility, final Activity activity, final Class<?> cls) {
        nodata_bt.setVisibility(visibility);
        nodata_bt.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                activity.startActivity(new Intent(activity, cls));

            }
        });

    }

    public void setNodataBt(int visibility) {
        nodata_bt.setVisibility(visibility);


    }

需要的styleable引數，載入attrs中：

    <!-- 佈局載入loding引數-->
    <declare-styleable name="LoadingLayout">
        <attr name="loadingView" format="reference" />
        <attr name="errorView" format="reference" />
        <attr name="retryView" format="reference" />
        <attr name="emptyView" format="reference" />
    </declare-styleable>

然後在activity中去進行操作：

  private LoadingLayout loadingLayout;//載入佈局
  private void initView() {
      loadingLayout = (LoadingLayout) findViewById(R.id.loading_layout);
       通過，loadingLayout.showLoading();//載入loading頁面
           loadingLayout.showError();//網路錯誤或載入錯誤的頁面
            loadingLayout.showEmpty();//空資料頁面
            loadingLayout.showContent();//顯示的內容
            來進行展示自己需要的內容，通過loadingLayout.setOnRetryClickListener來進行不同頁面的點選事件：

        loadingLayout.setOnRetryClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                switch (v.getId()) {
                    case R.id.communal_nodata_btn:
                        ActivityUtil.goForward(CarFileListActivity.this, CarFileAddActivity.class, true);//關閉跳轉到指定的頁面
                        break;
                    case R.id.communal_failload_layout:
                        if (!isNetworkConnected()) {
                            loadingLayout.showError();

                        } else {
                            mRefreshLayout.beginRefreshing();
                            loadingLayout.showLoading();
                        }

                        break;
                }

            }
        });

     }

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