Android更多状态的布局Layout，可随意切换状态的Layout，加载中、加载失败、空布局...

使用CustomStateLayout作为底层布局，可一个方法切换 加载中、加载失败、加载错误、内容为空、正常布局等等的状态；

public class CustomStateLayout extends RelativeLayout {

    private Context context;
    private final int NORMAL = 0;    //常规状态
    private final int LOADING = 1;   //加载中状态
    private final int LOADFAIL = 2;  //加载失败状态
    private final int LOADERROR = 3; //加载错误状态
    private final int LOADEMPTY = 4; //内容为空状态

    public CustomStateLayout(Context context) {
        super(context);
        this.context = context;
        init();
    }

    public CustomStateLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
        init();
    }

    public CustomStateLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.context = context;
        init();
    }


    private RelativeLayout RelativeLayoutLoadIng,RelativeLayoutLoadFin,RelativeLayoutLoadError,RelativeLayoutLoadEmpty;

    private LayoutInflater inflate;
    private void init(){
        inflate = LayoutInflater.from(context);
    }



    private void setLoadFail(){
       if (RelativeLayoutLoadFin == null){
           View v = this.inflate.inflate(R.layout.custom_loadfail,null);
           RelativeLayoutLoadFin = v.findViewById(R.id.loadFin);
           this.addView(RelativeLayoutLoadFin,new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));
       }else{
           RelativeLayoutLoadFin.setVisibility(VISIBLE);
       }
    }

    private void setLoadIng(){
        if (RelativeLayoutLoadIng == null){
            View v = this.inflate.inflate(R.layout.custom_loading,null);
            RelativeLayoutLoadIng = v.findViewById(R.id.loadIng);
            this.addView(RelativeLayoutLoadIng,new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));
        }else{
            RelativeLayoutLoadIng.setVisibility(VISIBLE);
        }
    }


    private void setLoadError(){
        if (RelativeLayoutLoadError == null){
            View v = this.inflate.inflate(R.layout.custom_loaderror,null);
            RelativeLayoutLoadError = v.findViewById(R.id.loadError);
            this.addView(RelativeLayoutLoadError,new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));
        }else{
            RelativeLayoutLoadError.setVisibility(VISIBLE);
        }
    }

    private void setLoadEmpty(){
        if (RelativeLayoutLoadEmpty == null){
            View v = this.inflate.inflate(R.layout.custom_loadempty,null);
            RelativeLayoutLoadEmpty = v.findViewById(R.id.loadEmpty);
            this.addView(RelativeLayoutLoadEmpty,new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));
        }else{
            RelativeLayoutLoadEmpty.setVisibility(VISIBLE);
        }
    }

    private void hideLoadFail(){
        if (RelativeLayoutLoadFin != null){
            RelativeLayoutLoadFin.setVisibility(GONE);
        }
    }

    private void hideLoadIng(){
        if (RelativeLayoutLoadIng != null){
            RelativeLayoutLoadIng.setVisibility(GONE);
        }
    }

    private void hideLoadError(){
        if (RelativeLayoutLoadError != null){
            RelativeLayoutLoadError.setVisibility(GONE);
        }
    }

    private void hideLoadEmpty(){
        if (RelativeLayoutLoadEmpty != null){
            RelativeLayoutLoadEmpty.setVisibility(GONE);
        }
    }


    public void showLoadIng(){
        setState(LOADING);
    }
    public void showLoadFail(){
        setState(LOADFAIL);
    }
    public void showLoadError(){
        setState(LOADERROR);
    }
    public void showLoadEmpty(){
        setState(LOADEMPTY);
    }
    public void hideAllState(){
        setState(NORMAL);
    }


    private void setState(int state){
         switch (state){
             case NORMAL :
                 hideLoadIng();
                 hideLoadFail();
                 hideLoadError();
                 hideLoadEmpty();
                 break;
             case LOADING :
                 setLoadIng();
                 hideLoadFail();
                 hideLoadError();
                 hideLoadEmpty();
                 break;
             case LOADFAIL :
                 hideLoadIng();
                 setLoadFail();
                 hideLoadError();
                 hideLoadEmpty();
                 break;
             case LOADERROR:
                 hideLoadIng();
                 hideLoadFail();
                 setLoadError();
                 hideLoadEmpty();
                 break;
             case LOADEMPTY:
                 hideLoadIng();
                 hideLoadFail();
                 hideLoadError();
                 setLoadEmpty();
                 break;
              default:
                  hideLoadIng();
                  hideLoadFail();
                  hideLoadError();
                  hideLoadEmpty();
                  break;
         }
    }
}

随便的一个“加载中”布局 R.layout.custom_loading （其它的各种状态布局都可以自己定义）：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/loadIng"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#fff"
    >
    <RelativeLayout
        android:layout_centerInParent="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        <ProgressBar
            android:id="@+id/iv"
            android:layout_width="40dp"
            android:layout_height="40dp" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_toRightOf="@id/iv"
            android:layout_marginLeft="10dp"
            android:text="加载中..."
            />
    </RelativeLayout>

</RelativeLayout>

使用：

public class CustomLayoutStateActivity extends AppCompatActivity implements View.OnClickListener {

    private CustomStateLayout mCustomStateLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_layout_state);
        mCustomStateLayout = (CustomStateLayout) findViewById(R.id.customRl);

        findViewById(R.id.bt1).setOnClickListener(this);
        findViewById(R.id.bt2).setOnClickListener(this);
        findViewById(R.id.bt3).setOnClickListener(this);
        findViewById(R.id.bt4).setOnClickListener(this);
        findViewById(R.id.bt5).setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.bt1:
                mCustomStateLayout.hideAllState();
                break;
            case R.id.bt2:
                mCustomStateLayout.showLoadIng();
                break;
            case R.id.bt3:
                mCustomStateLayout.showLoadFail();
                break;
            case R.id.bt4:
                mCustomStateLayout.showLoadError();
                break;
            case R.id.bt5:
                mCustomStateLayout.showLoadEmpty();
                break;
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center_horizontal">

    <choi.ccb.com.morestatelayout.CustomStateLayout
        android:layout_width="match_parent"
        android:id="@+id/customRl"
        android:layout_height="200dp">
        <TextView
            android:background="#ffdd88"
            android:text="我是原布局"
            android:gravity="center"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </choi.ccb.com.morestatelayout.CustomStateLayout>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/bt1"
        android:text="正常的"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/bt2"
        android:text="加载中的"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/bt3"
        android:text="加载失败的"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/bt4"
        android:text="加载错误的"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/bt5"
        android:text="加载空的"
        />
</LinearLayout>

源码在Github：https://github.com/CuiChenbo/CustomStateLayout