无法在NestedScrollView中完全滚动 [英] Not be able to fully scroll inside a NestedScrollView

问题描述

以某种方式，我无法在NestedScrollView中完全滚动.我的NestedScrollView内部是一个TextView，上面有很多文本，下面有一个按钮.向下滚动时，只能看到按钮的顶部(只有几个像素).它滚动得不够远.

Somehow I'm not able to fully scroll inside my NestedScrollView. Inside my NestedScrollView is a TextView with a lot of text and a button below it. When I scroll down I can only see a the top part of the button (only a few pixels). It doesn't scroll far enough.

这是我的布局:

<?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:id="@+id/appbar"
        android:layout_width="match_parent"
        android:stateListAnimator="@drawable/appbar_always_elevated"
        android:layout_height="128dp">

    <android.support.design.widget.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:contentScrim="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways|exitUntilCollapsed"
            app:toolbarId="@+id/toolbar">

        <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:title="@string/app_name"
                app:layout_collapseMode="pin">

        </android.support.v7.widget.Toolbar>
    </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>


<android.support.v4.widget.NestedScrollView
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

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

        <TextView
                android:id="@+id/textView"
                style="@style/Text.Body1.Medium"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="@dimen/margin"
                android:layout_marginTop="@dimen/margin"
                android:layout_marginEnd="@dimen/margin"
                android:text="@string/large_text"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@id/appbar"/>

        <Button
                android:id="@+id/continueButton"
                style="@style/Widget.Button.Green"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/margin"
                android:layout_marginStart="@dimen/margin"
                android:layout_marginEnd="@dimen/margin"
                android:layout_marginBottom="@dimen/margin"
                android:text="@string/continue_text"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"/>
    </LinearLayout>
   </android.support.v4.widget.NestedScrollView>

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

推荐答案

供大家参考，因为我遇到了同样的问题.这是一个已知问题，已在com.google.android.material:material:1.3.0-alpha04

For everyone's reference, since I just had the same problem. This is a known issue and has been fixed in com.google.android.material:material:1.3.0-alpha04

https://github.com/material-components/material-components-android/commit/a21a30026a33fc20cf7ad699d32d1298b84096c6

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