Question

我使用RelativeLayout和LinearLayout创建了一个简单的ScrollView，ScrollView在新设备上运行良好，我在Nexus 5上进行测试，一切正常，但是当我在较旧的设备上测试它（不是那么老）滚动没有'工作，布局只显示视图的顶部，它不允许我滚动。

所以我的xml是这样的：

<?xml version="1.0" encoding="utf-8"?>

<ScrollView 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:fillViewport="true">


        <LinearLayout android:layout_width="match_parent"
            android:layout_height="match_parent">

<android.support.percent.PercentRelativeLayout 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="wrap_content">


        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fab"
            app:srcCompat="@android:drawable/ic_menu_camera"
            android:elevation="2dp"
            app:layout_widthPercent="90%"
            app:layout_heightPercent="10%"
            app:layout_marginTopPercent="90%"
            app:layout_marginLeftPercent="80%"
            app:backgroundTint="#f1c40f"
            android:onClick="capture"/>

        <include
            layout="@layout/custom_toolbar"
            android:id="@+id/my_toolbar"
            app:layout_widthPercent="100%"
            app:layout_heightPercent="8%"
            app:layout_marginTopPercent="0%"
            app:layout_marginLeftPercent="0%" />



        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/SpecieName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="@color/nephritis"
            android:textSize="14dp"
            app:layout_widthPercent="60%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="85%"
            app:layout_marginLeftPercent="30%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/GenreName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="genrePressed"
            android:textColor="@color/nephritis"
            android:textSize="14dp"
            app:layout_widthPercent="60%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="95%"
            app:layout_marginLeftPercent="30%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/FamilyName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="familyPressed"
            android:textColor="@color/nephritis"
            android:textSize="14dp"
            app:layout_widthPercent="60%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="105%"
            app:layout_marginLeftPercent="30%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/textView8"
            android:text="Espécie"
            android:textSize="14dp"
            app:layout_widthPercent="25%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="85%"
            app:layout_marginLeftPercent="5%"
 />

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/textView7"
            app:layout_widthPercent="25%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="95%"
            app:layout_marginLeftPercent="5%"
            android:text="Género"
            android:textSize="14dp" />

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/Family"
            app:layout_widthPercent="25%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="105%"
            app:layout_marginLeftPercent="5%"
            android:text="Familia"
            android:textSize="14dp" />

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/specieDescription"
            android:textSize="14dp"
            app:layout_widthPercent="90%"
            android:layout_height="wrap_content"
            app:layout_marginTopPercent="120%"
            app:layout_marginLeftPercent="5%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/descricaoTit"
            android:text="Descrição"
            android:textSize="14dp"
            app:layout_widthPercent="30%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="115%"
            app:layout_marginLeftPercent="5%"/>

        <ImageView
            android:id="@+id/plantImage"
            android:adjustViewBounds="true"
            android:scaleType="fitXY"
            app:layout_widthPercent="80%"
            app:layout_heightPercent="50%"
            app:layout_marginTopPercent="10%"
            app:layout_marginLeftPercent="10%"
            app:srcCompat="@drawable/color_cursor_white" />

        <android.support.v7.widget.RecyclerView
            android:id="@+id/gallery"
            app:layout_widthPercent="100%"
            app:layout_heightPercent="10%"
            app:layout_marginTopPercent="62%"
            app:layout_marginLeftPercent="0%" />

        <RelativeLayout
            app:layout_widthPercent="40%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="75%"
            app:layout_marginLeftPercent="5%"
            android:onClick="showMap">

            <TextView
                android:id="@+id/googleMapsText"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_toRightOf="@+id/imageView6"
                android:layout_alignBottom="@+id/imageView6"
                android:text="Ver no mapa" />

            <ImageView
                android:id="@+id/imageView6"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_facebook_placeholder_for_locate_places_on_maps"
                android:tint="#F90101" />
        </RelativeLayout>

    </android.support.percent.PercentRelativeLayout>
        </LinearLayout>
</ScrollView>

我试图用线性布局包围我的布局，尝试遵循stackoverflow用户的sugested方法，但是不起作用。

有什么想法吗？

Answer 1

试一试。我不确定它是否会起作用，因为我不知道你的百分比布局。

<android.support.v4.widget.NestedScrollView 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:fillViewport="true">


        <LinearLayout android:layout_width="match_parent"
            android:layout_height="match_parent">

<android.support.percent.PercentRelativeLayout 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="wrap_content">


        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fab"
            app:srcCompat="@android:drawable/ic_menu_camera"
            android:elevation="2dp"
            app:layout_widthPercent="90%"
            app:layout_heightPercent="10%"
            app:layout_marginTopPercent="90%"
            app:layout_marginLeftPercent="80%"
            app:backgroundTint="#f1c40f"
            android:onClick="capture"/>

        <include
            layout="@layout/custom_toolbar"
            android:id="@+id/my_toolbar"
            app:layout_widthPercent="100%"
            app:layout_heightPercent="8%"
            app:layout_marginTopPercent="0%"
            app:layout_marginLeftPercent="0%" />



        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/SpecieName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="@color/nephritis"
            android:textSize="14dp"
            app:layout_widthPercent="60%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="85%"
            app:layout_marginLeftPercent="30%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/GenreName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="genrePressed"
            android:textColor="@color/nephritis"
            android:textSize="14dp"
            app:layout_widthPercent="60%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="95%"
            app:layout_marginLeftPercent="30%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/FamilyName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="familyPressed"
            android:textColor="@color/nephritis"
            android:textSize="14dp"
            app:layout_widthPercent="60%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="105%"
            app:layout_marginLeftPercent="30%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/textView8"
            android:text="Espécie"
            android:textSize="14dp"
            app:layout_widthPercent="25%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="85%"
            app:layout_marginLeftPercent="5%"
 />

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/textView7"
            app:layout_widthPercent="25%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="95%"
            app:layout_marginLeftPercent="5%"
            android:text="Género"
            android:textSize="14dp" />

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/Family"
            app:layout_widthPercent="25%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="105%"
            app:layout_marginLeftPercent="5%"
            android:text="Familia"
            android:textSize="14dp" />

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/specieDescription"
            android:textSize="14dp"
            app:layout_widthPercent="90%"
            android:layout_height="wrap_content"
            app:layout_marginTopPercent="120%"
            app:layout_marginLeftPercent="5%"/>

        <com.example.afcosta.inesctec.pt.android.Helpers.OpenSansMedium
            android:id="@+id/descricaoTit"
            android:text="Descrição"
            android:textSize="14dp"
            app:layout_widthPercent="30%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="115%"
            app:layout_marginLeftPercent="5%"/>

        <ImageView
            android:id="@+id/plantImage"
            android:adjustViewBounds="true"
            android:scaleType="fitXY"
            app:layout_widthPercent="80%"
            app:layout_heightPercent="50%"
            app:layout_marginTopPercent="10%"
            app:layout_marginLeftPercent="10%"
            app:srcCompat="@drawable/color_cursor_white" />

        <android.support.v7.widget.RecyclerView
            android:id="@+id/gallery"
            app:layout_widthPercent="100%"
            app:layout_heightPercent="10%"
            app:layout_marginTopPercent="62%"
            app:layout_marginLeftPercent="0%" />

        <RelativeLayout
            app:layout_widthPercent="40%"
            app:layout_heightPercent="5%"
            app:layout_marginTopPercent="75%"
            app:layout_marginLeftPercent="5%"
            android:onClick="showMap">

            <TextView
                android:id="@+id/googleMapsText"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_toRightOf="@+id/imageView6"
                android:layout_alignBottom="@+id/imageView6"
                android:text="Ver no mapa" />

            <ImageView
                android:id="@+id/imageView6"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_facebook_placeholder_for_locate_places_on_maps"
                android:tint="#F90101" />
        </RelativeLayout>

    </android.support.percent.PercentRelativeLayout>
        </LinearLayout>
</android.support.v4.widget.NestedScrollView>

Answer 2

ScrollView的子视图应设置为wrap_content。如果将其设置为match_parent，它将填充ScrollView的区域并且永不滚动，因为它不会比ScrollView大。

尝试将子LinearLayout layout_height更改为wrap_content或特定大小（以dp为单位）而不是match_parent。

修改

另外，尝试将滚动视图的高度从match_parent更改为wrap_content。因为滚动视图仅在其总高度大于父视图的高度时才启用滚动。

ScrollView无法在其他设备上运行

2 个答案: