<?xml version="1.0" encoding="utf-8"?><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:orientation="vertical">  <com.tabscroll.CustomScrollView    android:id="@+id/scrollView"    android:layout_width="match_parent"    android:layout_height="match_parent">    <FrameLayout      android:layout_width="match_parent"      android:layout_height="match_parent">      <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="vertical">        <LinearLayout          android:layout_width="match_parent"          android:layout_height="200dp"          android:background="#ccc"          android:gravity="center">          <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="這里是頂部內容區域"            android:textSize="16sp" />        </LinearLayout>        <!--占位的tablayout-->        <android.support.design.widget.TabLayout          android:id="@+id/tablayout_holder"          android:layout_width="match_parent"          android:layout_height="50dp"          android:background="#ffffff"          app:tabIndicatorColor="@color/colorPrimary"          app:tabMode="scrollable"          app:tabSelectedTextColor="@color/colorPrimary" />        <LinearLayout          android:id="@+id/container"          android:layout_width="match_parent"          android:layout_height="wrap_content"          android:orientation="vertical"          android:padding="16dp" />      </LinearLayout>      <!--實際用戶操作的tablayout-->      <android.support.design.widget.TabLayout        android:id="@+id/tablayout_real"        android:layout_width="match_parent"        android:layout_height="50dp"        android:background="#ffffff"        android:visibility="invisible"        app:tabIndicatorColor="@color/colorPrimary"        app:tabMode="scrollable"        app:tabSelectedTextColor="@color/colorPrimary" />    </FrameLayout>  </com.tabscroll.CustomScrollView></LinearLayout>

/** * 占位tablayout，用于滑動過程中去確定實際的tablayout的位置 */private TabLayout holderTabLayout;/** * 實際操作的tablayout， */private TabLayout realTabLayout;private CustomScrollView scrollView;private LinearLayout container;private String[] tabTxt = {"客廳", "臥室", "餐廳", "書房", "陽臺", "兒童房"};private List<AnchorView> anchorList = new ArrayList<>();//判讀是否是scrollview主動引起的滑動，true-是，false-否，由tablayout引起的private boolean isScroll;//記錄上一次位置，防止在同一內容塊里滑動 重復定位到tablayoutprivate int lastPos = 0;//監聽判斷最后一個模塊的高度，不滿一屏時讓最后一個模塊撐滿屏幕private ViewTreeObserver.OnGlobalLayoutListener listener;for (int i = 0; i < tabTxt.length; i++) {  AnchorView anchorView = new AnchorView(this);  anchorView.setAnchorTxt(tabTxt[i]);  anchorView.setContentTxt(tabTxt[i]);  anchorList.add(anchorView);  container.addView(anchorView);}for (int i = 0; i < tabTxt.length; i++) {  holderTabLayout.addTab(holderTabLayout.newTab().setText(tabTxt[i]));  realTabLayout.addTab(realTabLayout.newTab().setText(tabTxt[i]));}

listener = new ViewTreeObserver.OnGlobalLayoutListener() {  @Override  public void onGlobalLayout() {    //計算讓最后一個view高度撐滿屏幕    int screenH = getScreenHeight();    int statusBarH = getStatusBarHeight(AliHomeMoreActivity.this);    int tabH = holderTabLayout.getHeight();    int lastH = screenH - statusBarH - tabH - 16 * 3;    AnchorView anchorView = anchorList.get(anchorList.size() - 1);    if (anchorView.getHeight() < lastH) {      LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);      params.height = lastH;      anchorView.setLayoutParams(params);    }    //一開始讓實際的tablayout 移動到 占位的tablayout處，覆蓋占位的tablayout    realTabLayout.setTranslationY(holderTabLayout.getTop());    realTabLayout.setVisibility(View.VISIBLE);    container.getViewTreeObserver().removeOnGlobalLayoutListener(listener);  }};container.getViewTreeObserver().addOnGlobalLayoutListener(listener);private int getScreenHeight() {  return getResources().getDisplayMetrics().heightPixels;}public int getStatusBarHeight(Context context) {  int result = 0;  int resourceId = context.getResources()      .getIdentifier("status_bar_height", "dimen", "android");  if (resourceId > 0) {    result = context.getResources().getDimensionPixelSize(resourceId);  }  return result;}

scrollView.setOnTouchListener(new View.OnTouchListener() {  @Override  public boolean onTouch(View v, MotionEvent event) {    if (event.getAction() == MotionEvent.ACTION_DOWN) {      isScroll = true;    }    return false;  }});//監聽scrollview滑動scrollView.setCallbacks(new CustomScrollView.Callbacks() {  @Override  public void onScrollChanged(int x, int y, int oldx, int oldy) {    //根據滑動的距離y(不斷變化的) 和 holderTabLayout距離父布局頂部的距離(這個距離是固定的)對比，    //當y < holderTabLayout.getTop()時，holderTabLayout 仍在屏幕內，realTabLayout不斷移動holderTabLayout.getTop()距離，覆蓋holderTabLayout    //當y > holderTabLayout.getTop()時，holderTabLayout 移出，realTabLayout不斷移動y，相對的停留在頂部，看上去是靜止的    int translation = Math.max(y, holderTabLayout.getTop());    realTabLayout.setTranslationY(translation);    if (isScroll) {      for (int i = tabTxt.length - 1; i >= 0; i--) {        //需要y減去頂部內容區域的高度(具體看項目的高度，這里demo寫死的200dp)        if (y - 200 * 3 > anchorList.get(i).getTop() - 10) {          setScrollPos(i);          break;        }      }    }  }});private void setScrollPos(int newPos) {  if (lastPos != newPos) {    realTabLayout.setScrollPosition(newPos, 0, true);  }  lastPos = newPos;}

//實際的tablayout的點擊切換realTabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {  @Override  public void onTabSelected(TabLayout.Tab tab) {    isScroll = false;    int pos = tab.getPosition();    int top = anchorList.get(pos).getTop();    //同樣這里滑動要加上頂部內容區域的高度(這里寫死的高度)    scrollView.smoothScrollTo(0, top + 200 * 3);  }  @Override  public void onTabUnselected(TabLayout.Tab tab) {  }  @Override  public void onTabReselected(TabLayout.Tab tab) {  }});