CoordinatorLayout+AppBarLayout+CollapsingToolbarLayou實(shí)現(xiàn)手指滑動(dòng)效果

如何使用 CoordinatorLayout+AppBarLayout+CollapsingToolbarLayou實(shí)現(xiàn)下面GIF圖中的效果，再展開的時(shí)候頭像處于紅白中間，根據(jù)收縮程度改變頭像的位置！底下的RecyclerView也跟隨這個(gè)移動(dòng)，不會(huì)出現(xiàn)中間隔出一段距離！（僅提供源碼復(fù)制粘貼，很簡(jiǎn)單的）

先看下效果圖：

下面上代碼

XML布局代碼如下：

<?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'> <android.support.design.widget.CoordinatorLayout android: android:layout_width='match_parent' android:layout_height='match_parent' android:clipChildren='false'> <android.support.design.widget.AppBarLayout android: android:layout_width='match_parent' android:layout_height='wrap_content' android:background='@color/cFF3523' android:clipChildren='false' app:elevation='0dp'> <android.support.design.widget.CollapsingToolbarLayoutandroid: android:layout_width='match_parent'android:layout_height='wrap_content'app:layout_scrollFlags='scroll|exitUntilCollapsed'><RelativeLayout android: android:layout_width='match_parent' android:layout_height='200dp' android:orientation='horizontal' app:layout_collapseMode='parallax' app:layout_collapseParallaxMultiplier='0.25'> <android.support.v7.widget.CardView android:layout_width='match_parent' android:layout_height='60dp' android:layout_centerVertical='true' android:layout_gravity='center' android:layout_marginLeft='15dp' android:layout_marginRight='15dp' app:cardCornerRadius='5dp' app:cardElevation='5dp'> <LinearLayout android:layout_width='match_parent' android:layout_height='match_parent' android:orientation='horizontal'> <LinearLayoutandroid:layout_width='0dp'android:layout_height='match_parent'android:layout_weight='1'android:orientation='vertical'><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal|bottom' android:text='331' android:textColor='@color/c333333' android:textSize='16sp' /><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal' android:text='積分' android:textColor='@color/c333333' android:textSize='10sp' /> </LinearLayout> <Viewandroid:layout_width='0.7px'android:layout_height='40dp'android:layout_gravity='center_vertical'android:background='#727272'></View> <LinearLayoutandroid:layout_width='0dp'android:layout_height='match_parent'android:layout_weight='1'android:orientation='vertical'><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal|bottom' android:text='5' android:textColor='@color/c333333' android:textSize='16sp' /><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal' android:text='優(yōu)惠卷' android:textColor='@color/c333333' android:textSize='10sp' /> </LinearLayout> <Viewandroid:layout_width='0.7px'android:layout_height='40dp'android:layout_gravity='center_vertical'android:background='#727272'></View> <LinearLayoutandroid:layout_width='0dp'android:layout_height='match_parent'android:layout_weight='1'android:orientation='vertical'><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal|bottom' android:text='0.00' android:textColor='@color/c333333' android:textSize='16sp' /><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal' android:text='代金卷' android:textColor='@color/c333333' android:textSize='10sp' /> </LinearLayout> <Viewandroid:layout_width='0.7px'android:layout_height='40dp'android:layout_gravity='center_vertical'android:background='#727272'></View> <LinearLayoutandroid:layout_width='0dp'android:layout_height='match_parent'android:layout_weight='1'android:orientation='vertical'><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal|bottom' android:text='3314' android:textColor='@color/c333333' android:textSize='16sp' /><TextView android:layout_width='match_parent' android:layout_height='0dp' android:layout_weight='1' android:gravity='center_horizontal' android:text='淘幣' android:textColor='@color/c333333' android:textSize='10sp' /> </LinearLayout> </LinearLayout> </android.support.v7.widget.CardView></RelativeLayout><RelativeLayout android:layout_width='match_parent' android:layout_height='50dp' android:background='@color/cFF3523' android:gravity='center_vertical' app:layout_collapseMode='pin'> <ImageView android: android:layout_width='wrap_content' android:layout_height='wrap_content' android:layout_marginRight='10dp' android:layout_toLeftOf='@id/Fragment_ontstf_message' android:src='http://www.gepszalag.com/bcjs/@mipmap/set' /> <ImageView android: android:layout_width='wrap_content' android:layout_height='wrap_content' android:layout_alignParentRight='true' android:layout_marginRight='10dp' android:src='http://www.gepszalag.com/bcjs/@mipmap/message' /></RelativeLayout><android.support.v7.widget.Toolbar android: android:layout_width='match_parent' android:layout_height='?attr/actionBarSize' app:contentInsetStart='0dp' app:layout_collapseMode='pin'> <LinearLayout android:layout_width='match_parent' android:layout_height='match_parent' android:orientation='horizontal' android:padding='5dp'> <de.hdodenhof.circleimageview.CircleImageView android: android:layout_width='45dp' android:layout_height='45dp' android:layout_gravity='center_vertical' android:src='http://www.gepszalag.com/bcjs/@mipmap/ic_launcher_round' /> <LinearLayout android:layout_width='match_parent' android:layout_height='match_parent' android:orientation='vertical'> <TextViewandroid: android:layout_width='wrap_content'android:layout_height='0dp'android:layout_weight='1'android:layout_marginLeft='10dp'android:textSize='18sp' /> <TextViewandroid: android:layout_width='wrap_content'android:layout_height='0dp'android:layout_weight='1'android:layout_marginLeft='10dp'android:layout_marginBottom='5dp'android:textSize='14sp' /> </LinearLayout> </LinearLayout></android.support.v7.widget.Toolbar> </android.support.design.widget.CollapsingToolbarLayout> </android.support.design.widget.AppBarLayout> <android.support.v7.widget.RecyclerView android: android:layout_width='match_parent' android:layout_height='match_parent' android:background='@color/c00000000' app:layout_behavior='@string/appbar_scrolling_view_behavior'></android.support.v7.widget.RecyclerView> </android.support.design.widget.CoordinatorLayout></LinearLayout>

JAVA代碼如下：

/** * 獲取控件信息 */ private void initView() { FragmentOntstfAppBar = (AppBarLayout) view.findViewById(R.id.Fragment_ontstf_AppBar); FragmentOntstfToolbar = (Toolbar) view.findViewById(R.id.Fragment_ontstf_Toolbar); FragmentOntstfPortrait = (CircleImageView) view.findViewById(R.id.Fragment_ontstf_portrait); FragmentOntstfName = (TextView) view.findViewById(R.id.Fragment_ontstf_name); FragmentOntstfIntroduce = (TextView) view.findViewById(R.id.Fragment_ontstf_introduce); FragmentOntstfCollapsingToolbarLayout = (CollapsingToolbarLayout) view.findViewById(R.id.Fragment_ontstf_CollapsingToolbarLayout); FragmentOntstfSet = (ImageView) view.findViewById(R.id.Fragment_ontstf_set); FragmentOntstfMessage = (ImageView) view.findViewById(R.id.Fragment_ontstf_message); FragmentOntstfRecyclerView = (RecyclerView) view.findViewById(R.id.Fragment_ontstf_RecyclerView); FragmentOntstfCoordinatorLayout = (CoordinatorLayout) view.findViewById(R.id.Fragment_ontstf_CoordinatorLayout); FragmentOntstfRelativeLayout = (RelativeLayout) view.findViewById(R.id.Fragment_ontstf_RelativeLayout); setFragmentOntstfRecyclerView(); AppBar(); mPresenter.PselectUser(Userid); } /** * 最主要的代碼 * AppBar滑動(dòng)效果 */ private void AppBar() { FragmentOntstfAppBar.setExpanded(true); FragmentOntstfAppBar.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() { @Override public void onOffsetChanged(AppBarLayout appBarLayout, int i) {float alpha = (float) Math.abs(i) / appBarLayout.getTotalScrollRange();if (alpha == 0) { CollapsingToolbarLayout.LayoutParams layoutParams = new CollapsingToolbarLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); FragmentOntstfRecyclerView.setPadding(0,FragmentOntstfToolbar.getHeight() / 2,0,0); layoutParams.setMargins(0, 0, 0, (-FragmentOntstfToolbar.getHeight() / 2)); layoutParams.gravity = Gravity.BOTTOM; FragmentOntstfToolbar.setLayoutParams(layoutParams); FragmentOntstfCoordinatorLayout.setClipChildren(false);} else if (FragmentOntstfRelativeLayout.getHeight() - Math.abs(i * 1.0f) == FragmentOntstfToolbar.getHeight()) { FragmentOntstfCoordinatorLayout.setClipChildren(true);} else { int a = (int) ((FragmentOntstfToolbar.getHeight() / 2) * alpha); CollapsingToolbarLayout.LayoutParams layoutParams = new CollapsingToolbarLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); FragmentOntstfRecyclerView.setPadding(0,FragmentOntstfToolbar.getHeight() / 2 - a,0,0); layoutParams.setMargins(0, 0, 0, -(FragmentOntstfToolbar.getHeight() / 2) - (-a)); layoutParams.gravity = Gravity.BOTTOM; FragmentOntstfToolbar.setLayoutParams(layoutParams); FragmentOntstfCoordinatorLayout.setClipChildren(false);} } }); }

這樣就完成了！

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