CollapsingToolbarLayout的使用，实现向上滑动时，图片自动压缩消失，下拉到最上面图片显示出来...

代码：CollapsingToolbarLayout的使用

1.activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout 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.support.design.widget.AppBarLayout android:layout_width="match_parent" android:layout_height="200dp" android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout android:id="@+id/collapsing_toolbar_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:minHeight="200dp" app:contentScrim="?attr/colorPrimary" app:expandedTitleMarginEnd="10dp" app:expandedTitleMarginStart="10dp" app:collapsedTitleGravity="left" app:collapsedTitleTextAppearance="@style/TextAppearance.AppCompat.Widget.ActionBar.Title" app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView android:id="@+id/iv" android:layout_width="match_parent" android:layout_height="match_parent" android:scaleType="centerCrop" app:layout_collapseMode="parallax" app:layout_collapseParallaxMultiplier="0.5"/>
<android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" app:layout_collapseMode="pin" /> </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView android:layout_width="match_parent" android:layout_height="match_parent" app:layout_behavior="@string/appbar_scrolling_view_behavior">
<LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="100dp"> <TextView android:layout_width="0dp" android:layout_weight="4" android:background="@color/colorPink" android:text="访客记录" android:gravity="center" android:textSize="25sp" android:textColor="#ffffff" android:layout_height="match_parent" /> <View android:layout_width="1dp" android:layout_height="match_parent"/> <TextView android:textSize="25sp" android:background="@color/colorPink2" android:layout_width="0dp" android:layout_weight="5" android:text="远程开门" android:textColor="#ffffff" android:gravity=

转载于:https://www.cnblogs.com/xiaoshumiao/p/8568301.html