Question

屏幕截图

如您所见，布局对于较旧的设备来说太大了。我的想法是在用户在白色区域（ViewPager）中滚动时缩小CardView使其变大。我已经看到它在另一个应用程序中运行良好（不记得是哪个）。我不知道该怎么做，我需要以编程方式编写它吗？

XML：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".WordActivity">

    <WebView
        android:id="@+id/webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="20dp"
        android:visibility="gone" />

    <android.support.v7.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:elevation="0dp"
        app:cardBackgroundColor="@color/primary_dark"
        app:cardCornerRadius="0dp">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:padding="5dp">

            <TextView
                android:id="@+id/wordTitle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@id/poweredBy"
                android:layout_centerInParent="true"
                android:layout_marginTop="-12dp"
                android:fontFamily="@font/poppins"
                android:text="@string/word_title"
                android:textColor="@android:color/white"
                android:textSize="30sp" />

            <TextView
                android:id="@+id/wordTranslated"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@id/wordTitle"
                android:layout_alignStart="@id/wordTitle"
                android:layout_marginTop="-10dp"
                android:fontFamily="@font/poppins"
                android:textColor="@android:color/darker_gray"
                android:textSize="16sp" />

            <TextView
                android:id="@+id/poweredBy"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:fontFamily="@font/bungee_hairline"
                android:text="@string/powered"
                android:textColor="@android:color/darker_gray"
                android:textSize="16sp" />

        </RelativeLayout>

    </android.support.v7.widget.CardView>

    <android.support.design.widget.CoordinatorLayout
        android:id="@+id/coordinatorLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/cardView">

        <android.support.design.widget.TabLayout
            android:id="@+id/tabLayout"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:background="@color/primary"
            android:elevation="5dp"
            app:tabIndicatorColor="@android:color/white"
            app:tabIndicatorHeight="2dp"
            app:tabPaddingEnd="-1dp"
            app:tabPaddingStart="-1dp"
            app:tabSelectedTextColor="@android:color/white"
            app:tabTextColor="@color/white_transparent" />

        <android.support.v4.view.ViewPager
            android:id="@+id/viewPager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="45dp" />

    </android.support.design.widget.CoordinatorLayout>

</RelativeLayout>

Answer 1

它可能不适用于您当前的布局，但是如果您可以集成Android collapsing toolbars，则可以节省一些时间。

否则，您可以使用类似this的方法来检测用户何时位于列表顶部并显示视图，否则将其隐藏

Answer 2

尝试此示例布局，只需使用tablayout更改嵌套scrollview内部的代码

<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:theme="@style/Theme.AppCompat.Light.NoActionBar">

<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fitsSystemWindows="true"
            app:expandedTitleTextAppearance="@android:color/transparent"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="170dp"
                android:background="@drawable/bckg"
                app:layout_collapseMode="parallax"/>

            <android.support.v7.widget.Toolbar
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:clipToPadding="false"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/Theme.AppCompat.Light"/>

        </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"
        android:clipToPadding="false"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/textLoremIpsum"/>

    </android.support.v4.widget.NestedScrollView>

</android.support.design.widget.CoordinatorLayout>

这是我的示例屏幕截图

场景1

场景2

Answer 3

使用此示例布局再次尝试。

activity_main2.xml

   app.Use(next => context =>
    {
        if (context.Request.Path == "/")
        {
            //var tokens = antiforgery.GetTokens(context);
            var tokens = antiforgery.GetAndStoreTokens(context);
            context.Response.Cookies.Append("X-CSRF-TOKEN", tokens.CookieToken, new CookieOptions { HttpOnly = false });
            context.Response.Cookies.Append("X-CSRF-FORM-TOKEN", tokens.RequestToken, new CookieOptions { HttpOnly = false });
        }
        return next(context);
    })

场景1

场景2

在其他视图中滚动时“收缩” CardView

3 个答案: