Behavior搭建多RecyclerView的复杂界面

本文主要是介绍Behavior搭建多RecyclerView的复杂界面，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

开发意图

Android原生开发多个RecyclerView的复杂界，如淘宝首页这样的界面。不可避免的遇到滑动冲突的问题，官方为我们提供了NestedScrollView可以很完美的解决滑动问题。这里记录一下在没有了解NestedScrollView源码的情况下，自己采用behavior的解决思路。

开发思路

1.自定义RecyclerView容器（只包含一个RecyclerView可以添加其他布局）
2.把自定义容器部署到CoordinatorLayout内
2.使用Behavior统一管理自定义容器（位置及滑动事件）

demo视图

代码部分

1.自定义RecyclerView容器

package cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout;import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.widget.FrameLayout;import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.recyclerview.widget.RecyclerView;import cn.demomaster.huan.quickdeveloplibrary.util.QDLogger;@CoordinatorLayout.DefaultBehavior(MultiRecycleBehavior.class)
public class MultiRecycleContainer extends FrameLayout {private RecyclerView recyclerView;public MultiRecycleContainer(@NonNull Context context) {super(context);init(null);}public MultiRecycleContainer(@NonNull Context context, @Nullable AttributeSet attrs) {super(context, attrs);init(attrs);}public MultiRecycleContainer(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);init(attrs);}@Overrideprotected boolean addViewInLayout(View child, int index, ViewGroup.LayoutParams params) {return super.addViewInLayout(child, index, params);}private void init(AttributeSet attrs) {getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {@Overridepublic void onGlobalLayout() {getViewTreeObserver().removeOnGlobalLayoutListener(this);findRecyclerView(MultiRecycleContainer.this);}});}/*** 查找唯一的一个RecyclerView* @param child*/private void findRecyclerView(View child) {if (child instanceof ViewGroup && !(child instanceof RecyclerView)) {for (int i = 0; i < ((ViewGroup) child).getChildCount(); i++) {View v = ((ViewGroup) child).getChildAt(i);findRecyclerView(v);}} else if (child instanceof RecyclerView) {recyclerView = (RecyclerView) child;}}@Overridepublic boolean onTouchEvent(MotionEvent event) {QDLogger.d("onTouchEvent=" + event);/*** 把自身及其他子空间的触摸事件传递给recyclerView,其他控件如果不使用触摸滑动可以在ontouch中消耗掉即可*/if (recyclerView != null) {recyclerView.dispatchTouchEvent(event);}return true;//return super.onTouchEvent(event);}private int mHeaderViewHeight;private int mRecycleViewHeight;private int mViewHeight;@Overrideprotected void onSizeChanged(int w, int h, int oldw, int oldh) {findRecyclerView(this);if (recyclerView == null) return;QDLogger.d("onSizeChanged w=" + w + ",h=" + h + ",oldw=" + oldw + ",oldh=" + oldh);if (w != oldw || h != oldh) {// mHeaderViewHeight = findViewById(R.id.header).getMeasuredHeight();mRecycleViewHeight = recyclerView.getMeasuredHeight();mViewHeight = mHeaderViewHeight + mRecycleViewHeight;}QDLogger.d("mHeaderViewHeight=" + mHeaderViewHeight);}public int getHeaderViewHeight() {return mHeaderViewHeight;}public int getViewHeight() {return mViewHeight;}
}

MultiRecycleContainer部分和RecyclerView为一对一的关系，主要负责管理一个recyclerView并且可以添加其他自定义的布局

2.Behavior部分

package cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout;import android.content.Context;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.animation.Interpolator;
import android.widget.OverScroller;import androidx.annotation.NonNull;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.core.view.MotionEventCompat;
import androidx.core.view.VelocityTrackerCompat;
import androidx.core.view.ViewCompat;
import androidx.recyclerview.widget.RecyclerView;import cn.demomaster.huan.quickdeveloplibrary.util.QDLogger;public class MultiRecycleBehavior extends CoordinatorLayout.Behavior<MultiRecycleContainer> {CoordinatorLayout parent;@Overridepublic boolean onLayoutChild(@NonNull CoordinatorLayout parent, @NonNull MultiRecycleContainer child, int layoutDirection) {QDLogger.d("onLayoutChild");parent.onLayoutChild(child, layoutDirection);//获取上一个MultiRecycleContainer容器MultiRecycleContainer previous = getPreviousChild(parent, child);if (previous == null) {//为空说明child的position=0int offset = child.getTop();QDLogger.d("SlidingBehavior", child.getId() + "offsetTopAndBottom=" + offset + ", top=" + child.getTop() + ",y=" + child.getY());} else {//获取上一个MultiRecycleContainer容器，来确定当前child的位置 (当前child的位置为，上一个的top+上一个的height)int offset = previous.getTop() + previous.getHeight();child.offsetTopAndBottom(offset);}return true;}/*** 获取MultiRecycleContainer列表中的上一个* @param parent  CoordinatorLayout父容器* @param child  当前MultiRecycleContainer* @return*/private MultiRecycleContainer getPreviousChild(CoordinatorLayout parent, MultiRecycleContainer child) {int cartindex = parent.indexOfChild(child);for (int i = cartindex - 1; i >= 0; i--) {View v = parent.getChildAt(i);if (v instanceof MultiRecycleContainer) {return (MultiRecycleContainer) v;}}return null;}boolean isVerticalScroll;//是否是垂直滚动@Overridepublic boolean onStartNestedScroll(@NonNull CoordinatorLayout coordinatorLayout, @NonNull MultiRecycleContainer child, @NonNull View directTargetChild, @NonNull View target, int axes, int type) {QDLogger.d("onStartNestedScroll axes=" + axes + ",target=" + target.getClass().getName());this.parent = coordinatorLayout;if (!isInital) {//初始化惯性滚动init(parent);}boolean isVertical = (axes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0;isVerticalScroll = isVertical && child == directTargetChild;//返回true则子view不在进行滚动return isVerticalScroll;}@Overridepublic boolean onNestedPreFling(@NonNull CoordinatorLayout parent, @NonNull MultiRecycleContainer child, @NonNull View target, float velocityX, float velocityY) {//int shift = scroll(parent, child, (int) velocityY);// return super.onNestedPreFling(coordinatorLayout, child, target, velocityX, velocityY);return false;}@Overridepublic boolean onNestedFling(@NonNull CoordinatorLayout parent, @NonNull MultiRecycleContainer child, @NonNull View target, float velocityX, float velocityY, boolean consumed) {QDLogger.d("onNestedFling...");//return super.onNestedFling(coordinatorLayout, child, target, velocityX, velocityY, consumed);scroll(parent, child, consumed ? 0 : (int) velocityY);scrollParent(parent, child, null, consumed ? 0 : (int) velocityY);return false;}@Overridepublic void onNestedPreScroll(@NonNull CoordinatorLayout parent, @NonNull MultiRecycleContainer child, @NonNull View target, int dx, int dy, @NonNull int[] consumed, int type) {QDLogger.d("dy=" + dy + ",consumed x=" + consumed[0] + ",y=" + consumed[1]);//dy>0上推，dy<0下拉boolean canScrollDown = target.canScrollVertically(-1);//的值表示是否能向下滚动boolean isToped = !canScrollDown;//表示是否已经滚动到顶部boolean canScrollUp = ViewCompat.canScrollVertically(target, 1);//的值表示是否能向上滚动boolean isBottomed = !canScrollUp;//表示已经滚动到底部QDLogger.d("isToped=" + isToped + ",isBottomed=" + isBottomed + ",child.getTop()=" + child.getTop());if (child.getTop() == 0 && ((dy > 0 && canScrollUp) || (dy < 0 && canScrollDown))) {consumed[1] = scrollChild(parent, child, target, dy);} else {consumed[1] = scrollParent(parent, child, target, dy);}//super.onNestedPreScroll(parent, child, target, dx, dy, consumed, type);}/*** 优先父view 消耗** @param parent* @param target* @param dy* @return*/private int scrollParent(CoordinatorLayout parent, MultiRecycleContainer child, View target, int dy) {int py = 0;QDLogger.d("获取下一个可滚动的视图");//1.获取下一个可滚动的视图if (dy > 0) {//上推QDLogger.d("上推");MultiRecycleContainer upper = getUpperChild(parent);QDLogger.d("获取下一个可上推的视图:" + upper);if (upper == null) {py = dy;} else {QDLogger.d("获取下一个可上推的视图:" + upper + ",dy=" + dy + ",upper.getTop()=" + upper.getTop());py = Math.min(upper.getTop(), dy);}} else {//下拉QDLogger.d("下拉");MultiRecycleContainer downer = getDownerChild(parent);//下一个QDLogger.d("获取下一个可下拉的视图:" + downer);if (downer == null) {py = dy;} else {QDLogger.d("获取下一个可下拉的视图dy=" + dy + ",downer.getTop()=" + downer.getTop());py = Math.max(downer.getTop(), dy);}}//2.scrollPrentscroll(parent, child, py);return py;}/*** 获取下一个即将要出现的可下拉滚动的控件** @param parent* @return*/private MultiRecycleContainer getDownerChild(CoordinatorLayout parent) {MultiRecycleContainer current = getCurrentChild(parent);int index = parent.indexOfChild(current);for (int i = index; i > 0; i--) {View v = parent.getChildAt(i);if (v instanceof MultiRecycleContainer) {boolean canScrollDown = (getChildRecyclerView((ViewGroup) v)).canScrollVertically(-1);//的值表示是否能向下滚动if (canScrollDown) {//下拉return (MultiRecycleContainer) v;}}}return null;}/*** 获取下一个即将要出现的可上推滚动的控件** @param parent* @return*/private MultiRecycleContainer getUpperChild(CoordinatorLayout parent) {MultiRecycleContainer current = getCurrentChild(parent);int index = parent.indexOfChild(current);W:for (int i = index; i < parent.getChildCount(); i++) {View v = parent.getChildAt(i);if (v instanceof MultiRecycleContainer) {if (getChildRecyclerView((ViewGroup) v) == null) continue W;boolean canScrollUp = ViewCompat.canScrollVertically(getChildRecyclerView((ViewGroup) v), 1);//的值表示是否能向上滚动if (canScrollUp) {//可上推return (MultiRecycleContainer) v;}}}return null;}/*** 获取child中的第一个recycleView，所以每个StackSlidingLayout中只能放一个recycleView** @param v* @return*/private RecyclerView getChildRecyclerView(ViewGroup v) {for (int i = 0; i < v.getChildCount(); i++) {if (v.getChildAt(i) instanceof RecyclerView) {return (RecyclerView) v.getChildAt(i);}if (v.getChildAt(i) instanceof ViewGroup) {RecyclerView recyclerView = findRecycleView((ViewGroup) v.getChildAt(i));if (recyclerView != null) {return recyclerView;}}}return null;}/*** 获取当前子容器中的recycle,注意每个容器中只存放一个recyclerView* @param viewGroup* @return*/private RecyclerView findRecycleView(ViewGroup viewGroup) {for (int i = 0; i < viewGroup.getChildCount(); i++) {if (viewGroup.getChildAt(i) instanceof RecyclerView) {return (RecyclerView) viewGroup.getChildAt(i);}if (viewGroup.getChildAt(i) instanceof ViewGroup) {RecyclerView recyclerView = findRecycleView((ViewGroup) viewGroup.getChildAt(i));if (recyclerView != null) {return recyclerView;}}}return null;}/*** 优先子view滚动** @param parent* @param target* @param dy* @return*/private int scrollChild(CoordinatorLayout parent, MultiRecycleContainer child, View target, int dy) {//1.优先parent滑动//2.寻找到可以滚动的下一个childreturn 0;}@Overridepublic void onNestedScroll(@NonNull CoordinatorLayout parent, @NonNull MultiRecycleContainer child, @NonNull View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int type, @NonNull int[] consumed) {QDLogger.d("onNestedScroll...");//dy>0上推，dy<0下拉boolean canScrollDown = target.canScrollVertically(-1);//的值表示是否能向下滚动boolean isToped = !canScrollDown;//表示是否已经滚动到顶部boolean canScrollUp = ViewCompat.canScrollVertically(target, 1);//的值表示是否能向上滚动boolean isBottomed = !canScrollUp;//表示已经滚动到底部QDLogger.d("isToped=" + isToped + ",isBottomed=" + isBottomed + ",child.getTop()=" + child.getTop());if (child.getTop() == 0 && ((dyUnconsumed > 0 && canScrollUp) || (dyUnconsumed < 0 && canScrollDown))) {consumed[1] = scrollChild(parent, child, target, dyUnconsumed);} else {consumed[1] = scrollParent(parent, child, target, dyUnconsumed);}}private int scroll(CoordinatorLayout parent, MultiRecycleContainer child, int dy) {//1.k控制自己的移动int initialOffset = child.getTop();MultiRecycleContainer firstchild = getFirstChild(parent);MultiRecycleContainer lastchild = getLastChild(parent);//dy>0上推，dy<0下拉int top = firstchild.getTop();int bottom = lastchild.getBottom() - parent.getHeight();QDLogger.d("height=" + parent.getHeight() + ",lastchild.getBottom()=" + lastchild.getBottom() + ",firstchild.getTop()=" + firstchild.getTop());QDLogger.d("dy=" + dy + ",min=" + top + ",max=" + top + ",initialOffset - dy=" + (initialOffset - dy));int offset = 0;//= clamp(initialOffset - dy,top ,top)-initialOffset;//offset = 目标值-当前值if (dy > 0) {offset = -Math.min(dy, bottom);} else if (dy < 0) {offset = -Math.max(dy, top);}child.offsetTopAndBottom(offset);moveOther(parent, child, offset);return dy - offset;//滑动方向}/*** 获取下一个MultiRecycleContainer* @param parent* @param child* @return*/private MultiRecycleContainer getNextChild(CoordinatorLayout parent, MultiRecycleContainer child) {int cartindex = parent.indexOfChild(child);for (int i = cartindex + 1; i < parent.getChildCount(); i++) {View v = parent.getChildAt(i);if (v instanceof MultiRecycleContainer) {return (MultiRecycleContainer) v;}}return null;}/*** 获取第一个MultiRecycleContainer* @param parent* @return*/private MultiRecycleContainer getFirstChild(CoordinatorLayout parent) {MultiRecycleContainer firstchild = null;for (int i = 0; i < parent.getChildCount(); i++) {View view = parent.getChildAt(i);if (view instanceof MultiRecycleContainer) {firstchild = (MultiRecycleContainer) view;return firstchild;}}return firstchild;}/*** 获取当前MultiRecycleContainer* @param parent* @return*/private MultiRecycleContainer getCurrentChild(CoordinatorLayout parent) {MultiRecycleContainer current = null;for (int i = 0; i < parent.getChildCount(); i++) {View view = parent.getChildAt(i);if (view.getTop() >= 0) {return (MultiRecycleContainer) view;}}return current;}/*** 获取最后一个MultiRecycleContainer* @param parent* @return*/private MultiRecycleContainer getLastChild(CoordinatorLayout parent) {MultiRecycleContainer lastchild = null;for (int i = parent.getChildCount() - 1; i >= 0; i--) {View view = parent.getChildAt(i);if (view instanceof MultiRecycleContainer) {lastchild = (MultiRecycleContainer) view;return lastchild;}}return lastchild;}/*** 获取CoordinatorLayout所有子view视图高度* @param parent* @return*/private int getAllChildHeight(CoordinatorLayout parent) {int height = 0;for (int i = 0; i < parent.getChildCount(); i++) {height += parent.getChildAt(i).getHeight();}return height;}/*** 移动其他平级的MultiRecycleContainer* @param parent* @param child* @param offset*/private void moveOther(CoordinatorLayout parent, MultiRecycleContainer child, int offset) {MultiRecycleContainer current = child;MultiRecycleContainer above = getPreviousChild(parent, current);while (above != null) {int offset_c = current.getTop() - above.getHeight() - above.getTop();above.offsetTopAndBottom(offset_c);current = above;above = getPreviousChild(parent, current);}current = child;MultiRecycleContainer below = getNextChild(parent, current);while (below != null) {int offset_c = current.getTop() + current.getHeight() - below.getTop();below.offsetTopAndBottom(offset_c);current = below;below = getNextChild(parent, current);}}/****************   以下参考网上的惯性滚动   效果还不是很好     ****************************************************************/private boolean isInital;private void init(View view) {isInital = true;this.mContext = view.getContext();mViewFlinger = new ViewFlinger(mContext, view);final ViewConfiguration vc = ViewConfiguration.get(mContext);mTouchSlop = vc.getScaledTouchSlop();mMinFlingVelocity = vc.getScaledMinimumFlingVelocity();mMaxFlingVelocity = vc.getScaledMaximumFlingVelocity();DisplayMetrics metric = mContext.getResources().getDisplayMetrics();SCREEN_WIDTH = metric.widthPixels;SCREEN_HEIGHT = metric.heightPixels;}private Context mContext;private int SCREEN_WIDTH = 0;private int SCREEN_HEIGHT = 0;private int mWidth = 0;private int mHeight = 0;private static final int INVALID_POINTER = -1;public static final int SCROLL_STATE_IDLE = 0;public static final int SCROLL_STATE_DRAGGING = 1;public static final int SCROLL_STATE_SETTLING = 2;private int mScrollState = SCROLL_STATE_IDLE;private int mScrollPointerId = INVALID_POINTER;private int mLastTouchY;private int mTouchSlop;private int mMinFlingVelocity;private int mMaxFlingVelocity;private ViewFlinger mViewFlinger;private VelocityTracker mVelocityTracker;//滑动速度跟踪器@Overridepublic boolean onTouchEvent(@NonNull CoordinatorLayout parent, @NonNull MultiRecycleContainer child, @NonNull MotionEvent event) {if (!isInital) {init(parent);}if (mVelocityTracker == null) {mVelocityTracker = VelocityTracker.obtain();}boolean eventAddedToVelocityTracker = false;final int action = MotionEventCompat.getActionMasked(event);final int actionIndex = MotionEventCompat.getActionIndex(event);final MotionEvent vtev = MotionEvent.obtain(event);switch (action) {case MotionEvent.ACTION_DOWN: {setScrollState(SCROLL_STATE_IDLE);mScrollPointerId = event.getPointerId(0);mLastTouchY = (int) (event.getY() + 0.5f);break;}case MotionEventCompat.ACTION_POINTER_DOWN: {mScrollPointerId = event.getPointerId(actionIndex);mLastTouchY = (int) (event.getY(actionIndex) + 0.5f);break;}case MotionEvent.ACTION_MOVE: {final int index = event.findPointerIndex(mScrollPointerId);if (index < 0) {Log.e("zhufeng", "Error processing scroll; pointer index for id " + mScrollPointerId + " not found. Did any MotionEvents get skipped?");return false;}final int y = (int) (event.getY(index) + 0.5f);int dy = mLastTouchY - y;if (mScrollState != SCROLL_STATE_DRAGGING) {boolean startScroll = false;if (Math.abs(dy) > mTouchSlop) {if (dy > 0) {dy -= mTouchSlop;} else {dy += mTouchSlop;}startScroll = true;}if (startScroll) {setScrollState(SCROLL_STATE_DRAGGING);}}if (mScrollState == SCROLL_STATE_DRAGGING) {mLastTouchY = y;constrainScrollBy(dy);}break;}case MotionEventCompat.ACTION_POINTER_UP: {if (event.getPointerId(actionIndex) == mScrollPointerId) {// Pick a new pointer to pick up the slack.final int newIndex = actionIndex == 0 ? 1 : 0;mScrollPointerId = event.getPointerId(newIndex);mLastTouchY = (int) (event.getY(newIndex) + 0.5f);}break;}case MotionEvent.ACTION_UP: {mVelocityTracker.addMovement(vtev);eventAddedToVelocityTracker = true;mVelocityTracker.computeCurrentVelocity(1000, mMaxFlingVelocity);float yVelocity = -VelocityTrackerCompat.getYVelocity(mVelocityTracker, mScrollPointerId);Log.i("zhufeng", "速度取值：" + yVelocity);if (Math.abs(yVelocity) < mMinFlingVelocity) {yVelocity = 0F;} else {yVelocity = Math.max(-mMaxFlingVelocity, Math.min(yVelocity, mMaxFlingVelocity));}if (yVelocity != 0) {mViewFlinger.fling((int) yVelocity);} else {setScrollState(SCROLL_STATE_IDLE);}resetTouch();break;}case MotionEvent.ACTION_CANCEL: {resetTouch();break;}}if (!eventAddedToVelocityTracker) {mVelocityTracker.addMovement(vtev);}vtev.recycle();return true;//return super.onTouchEvent(parent, child, ev);}private void resetTouch() {if (mVelocityTracker != null) {mVelocityTracker.clear();}}private void setScrollState(int state) {if (state == mScrollState) {return;}mScrollState = state;if (state != SCROLL_STATE_SETTLING) {mViewFlinger.stop();}}private class ViewFlinger implements Runnable {private int mLastFlingY = 0;private OverScroller mScroller;private boolean mEatRunOnAnimationRequest = false;private boolean mReSchedulePostAnimationCallback = false;private View mView;public ViewFlinger(Context context, View view) {this.mView = view;mScroller = new OverScroller(context, sQuinticInterpolator);}@Overridepublic void run() {disableRunOnAnimationRequests();final OverScroller scroller = mScroller;if (scroller.computeScrollOffset()) {final int y = scroller.getCurrY();int dy = y - mLastFlingY;mLastFlingY = y;constrainScrollBy(dy);postOnAnimation();}enableRunOnAnimationRequests();}public void fling(int velocityY) {mLastFlingY = 0;setScrollState(SCROLL_STATE_SETTLING);mScroller.fling(0, 0, 0, velocityY, Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE, Integer.MAX_VALUE);postOnAnimation();}public void stop() {mView.removeCallbacks(this);mScroller.abortAnimation();}private void disableRunOnAnimationRequests() {mReSchedulePostAnimationCallback = false;mEatRunOnAnimationRequest = true;}private void enableRunOnAnimationRequests() {mEatRunOnAnimationRequest = false;if (mReSchedulePostAnimationCallback) {postOnAnimation();}}void postOnAnimation() {if (mEatRunOnAnimationRequest) {mReSchedulePostAnimationCallback = true;} else {mView.removeCallbacks(this);ViewCompat.postOnAnimation(mView, this);}}}private void constrainScrollBy(int dy) {/* Rect viewport = new Rect();getGlobalVisibleRect(viewport);int height = viewport.height();int width = viewport.width();*/if (parent == null) return;int height = getAllChildHeight(parent);int width = parent.getWidth();QDLogger.d("height=" + height + ",width=" + width);int scrollY = getFirstChild(parent).getTop();MultiRecycleContainer child = getCurrentChild(parent);//下边界if (mHeight - scrollY - dy < height) {dy = mHeight - scrollY - height;}//上边界if (scrollY + dy < 0) {dy = -scrollY;}// scroll(parent, child, dy);scrollParent(parent, child, null, dy);}//f(x) = (x-1)^5 + 1private static final Interpolator sQuinticInterpolator = new Interpolator() {@Overridepublic float getInterpolation(float t) {t -= 1.0f;return t * t * t * t * t + 1.0f;}};
}

Behavior部分负责管理多个容器的位置，并且负责协调滚动事件

使用部分

1.xml布局

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@color/white"><androidx.coordinatorlayout.widget.CoordinatorLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:background="@color/transparent_light_77"><cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainerandroid:id="@+id/ssl_01"android:layout_width="match_parent"android:layout_height="wrap_content"android:colorBackground="@color/red"android:text="RecycleView A"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:id="@+id/ll_header_A"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@color/red"android:orientation="horizontal"android:paddingLeft="16dp"android:paddingTop="16dp"android:paddingBottom="36dp"><ImageViewandroid:layout_width="45dp"android:layout_height="45dp"android:padding="5dp"android:src="@drawable/umeng_socialize_sina" /><TextViewandroid:id="@+id/header_A"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:paddingLeft="15dp"android:text="斗气大陆"android:textColor="@color/white"android:textSize="32dp" /></LinearLayout><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/list_A"android:layout_width="match_parent"android:layout_height="match_parent"android:overScrollMode="never"></androidx.recyclerview.widget.RecyclerView></LinearLayout></cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainer><cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainerandroid:id="@+id/ssl_02"android:layout_width="match_parent"android:layout_height="wrap_content"android:colorBackground="@color/green"android:text="RecycleView B"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:id="@+id/ll_header_B"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@color/green"android:orientation="horizontal"android:padding="6dp"><ImageViewandroid:layout_width="55dp"android:layout_height="55dp"android:padding="5dp"android:src="@drawable/shield" /><TextViewandroid:id="@+id/header_B"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:gravity="center_vertical"android:paddingLeft="10dp"android:text="再接再厉"android:textColor="@color/white"android:textSize="22dp" /></LinearLayout><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/list_B"android:layout_width="match_parent"android:layout_height="match_parent"android:overScrollMode="never"></androidx.recyclerview.widget.RecyclerView></LinearLayout></cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainer><cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainerandroid:id="@+id/ssl_03"android:layout_width="match_parent"android:layout_height="wrap_content"android:colorBackground="@color/yellow"android:text="RecycleView C"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:id="@+id/ll_header_C"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@color/blue"android:orientation="horizontal"android:padding="6dp"><TextViewandroid:id="@+id/header_C"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:gravity="center_vertical"android:paddingLeft="15dp"android:text="人生如梦"android:textColor="@color/white"android:textSize="16dp"android:textStyle="bold" /><ImageViewandroid:layout_width="35dp"android:layout_height="35dp"android:padding="5dp"android:src="@drawable/umeng_socialize_wxcircle" /></LinearLayout><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/list_C"android:layout_width="match_parent"android:layout_height="match_parent"android:overScrollMode="never"></androidx.recyclerview.widget.RecyclerView></LinearLayout></cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainer><cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainerandroid:id="@+id/ssl_04"android:layout_width="match_parent"android:layout_height="wrap_content"android:colorBackground="@color/blue"android:text="RecycleView D"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:id="@+id/ll_header_D"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@color/yellow"android:orientation="horizontal"android:padding="6dp"><ImageViewandroid:layout_width="65dp"android:layout_height="65dp"android:padding="5dp"android:src="@drawable/umeng_socialize_fav" /><TextViewandroid:id="@+id/header_D"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:gravity="center_vertical"android:paddingLeft="15dp"android:text="艳阳高照"android:textColor="@color/black"android:textSize="28dp" /></LinearLayout><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/list_D"android:layout_width="match_parent"android:layout_height="match_parent"android:overScrollMode="never"></androidx.recyclerview.widget.RecyclerView></LinearLayout></cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainer><cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainerandroid:id="@+id/ssl_05"android:layout_width="match_parent"android:layout_height="wrap_content"android:colorBackground="@color/chocolate"android:text="RecycleView E"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:id="@+id/ll_header_E"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@color/gray"android:orientation="horizontal"android:padding="6dp"><TextViewandroid:id="@+id/header_E"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:drawableLeft="@drawable/umeng_socialize_qzone"android:gravity="center_vertical"android:paddingLeft="15dp"android:text="过眼云烟"android:textColor="@color/white"android:textSize="22dp"android:textStyle="italic" /></LinearLayout><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/list_E"android:layout_width="match_parent"android:layout_height="match_parent"android:overScrollMode="never"></androidx.recyclerview.widget.RecyclerView></LinearLayout></cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.MultiRecycleContainer></androidx.coordinatorlayout.widget.CoordinatorLayout>
</FrameLayout>

demo里用了5个recyclerView，看起来代码很多。其实就是CoordinatorLayout里包含多个MultiRecycleContainer
<CoordinatorLayout ><MultiRecycleContainer><LinearLayout><RecycleView/><其他布局/></LinearLayout></MultiRecycleContainer><MultiRecycleContainer><LinearLayout><RecycleView/><其他布局/></LinearLayout></MultiRecycleContainer>
</CoordinatorLayout >

2.java部分

package cn.demomaster.huan.quickdevelop.fragment.component;import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;import java.util.ArrayList;
import java.util.List;import cn.demomaster.huan.quickdevelop.R;
import cn.demomaster.huan.quickdeveloplibrary.annotation.ActivityPager;
import cn.demomaster.huan.quickdeveloplibrary.annotation.ResType;
import cn.demomaster.huan.quickdeveloplibrary.base.fragment.QDBaseFragment;
import cn.demomaster.huan.quickdeveloplibrary.base.tool.actionbar.ActionBarInterface;
import cn.demomaster.huan.quickdeveloplibrary.view.loading.StateView;
import cn.demomaster.huan.quickdeveloplibrary.widget.stackslidingLayout.ComponentAdapter;/*** Squirrel桓* 2018/8/25*/@ActivityPager(name = "StackSliding", preViewClass = StateView.class, resType = ResType.Custome)
public class StackSlidingLayoutFragment extends QDBaseFragment {//ComponentsViewGroup mView;@Overridepublic int getBackgroundColor() {return Color.WHITE;}@Overridepublic ViewGroup getContentView(LayoutInflater inflater) {if (mView == null) {mView = (ViewGroup) inflater.inflate(R.layout.fragment_layout_stack_sliding, null);}return mView;}private RecyclerView recyclerView_A, recyclerView_B, recyclerView_C, recyclerView_D, recyclerView_E;private TextView header_A, header_B, header_C, header_D, header_E;private ComponentAdapter adapter_A, adapter_B, adapter_C, adapter_D, adapter_E;private List<String> items_A, items_B, items_C, items_D, items_E;@Overridepublic void initView(View rootView, ActionBarInterface actionBarLayout) {actionBarLayout.setActionBarType(ActionBarInterface.ACTIONBAR_TYPE.ACTION_TRANSPARENT);actionBarLayout.setHeaderBackgroundColor(Color.TRANSPARENT);//ArecyclerView_A = rootView.findViewById(R.id.list_A);header_A = rootView.findViewById(R.id.header_A);adapter_A = new ComponentAdapter(getContext(), Color.BLACK);items_A = new ArrayList();int c = 20;for (int i = 0; i < c; i++) {items_A.add("A" + i);}adapter_A.updateList(items_A);recyclerView_A.setAdapter(adapter_A);recyclerView_A.setLayoutManager(new LinearLayoutManager(getContext()));//BrecyclerView_B = rootView.findViewById(R.id.list_B);header_B = rootView.findViewById(R.id.header_B);adapter_B = new ComponentAdapter(getContext(), Color.BLACK);items_B = new ArrayList();c = 6;for (int i = 0; i < c; i++) {items_B.add("B" + i);}adapter_B.updateList(items_B);recyclerView_B.setAdapter(adapter_B);recyclerView_B.setLayoutManager(new LinearLayoutManager(getContext()));//CrecyclerView_C = rootView.findViewById(R.id.list_C);header_C = rootView.findViewById(R.id.header_C);adapter_C = new ComponentAdapter(getContext(), Color.BLACK);items_C = new ArrayList();c = 33;for (int i = 0; i < c; i++) {items_C.add("C" + i);}adapter_C.updateList(items_C);recyclerView_C.setAdapter(adapter_C);recyclerView_C.setLayoutManager(new LinearLayoutManager(getContext()));//DrecyclerView_D = rootView.findViewById(R.id.list_D);header_D = rootView.findViewById(R.id.header_D);adapter_D = new ComponentAdapter(getContext(), Color.BLACK);items_D = new ArrayList();c = 3;for (int i = 0; i < c; i++) {items_D.add("D" + i);}adapter_D.updateList(items_D);recyclerView_D.setAdapter(adapter_D);recyclerView_D.setLayoutManager(new LinearLayoutManager(getContext()));//ErecyclerView_E = rootView.findViewById(R.id.list_E);header_E = rootView.findViewById(R.id.header_E);adapter_E = new ComponentAdapter(getContext(), Color.BLACK);items_E = new ArrayList();c = 16;for (int i = 0; i < c; i++) {items_E.add("E" + i);}adapter_E.updateList(items_E);recyclerView_E.setAdapter(adapter_E);recyclerView_E.setLayoutManager(new LinearLayoutManager(getContext()));}@Overridepublic void onStop() {super.onStop();}
}

这部分没什么可说的，正常初始化使用recycleView和其他自定义布局。

遗留

每次最遗憾的是留了一个小尾巴，个人能力有限。1.使用网上的惯性滚动代码，效果不是很理想。2.惯性滑动跨越要把滑动事件传动给上一个recycler继续滑动，还没有处理好。

也是首次使用behavior做个记录，后面还想写写更多有意思的效果。

我的项目

allprojects {repositories {...maven { url 'https://jitpack.io' }}}

dependencies {implementation 'com.github.squirrelhuan:QuickDevelop:1.1.23'}

项目地址：https://github.com/squirrelhuan/QuickDevelop

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