Why doesn't my ScrollView scroll?

  • Thread starter Darkmisc
  • Start date
In summary, the conversation discusses a problem with a ConstrainedLayout in a ScrollView not being able to scroll. The person has tried adjusting the height and removing constraints, but it did not help. They also provide the XML code for reference. However, the solution is found to be setting the height of the radio group to "wrap_content".
  • #1
Darkmisc
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TL;DR Summary
I've used a ConstrainedLayout within a ScrollView and it's not scrolling at all.
Hi everyone

I've used a ConstrainedLayout in a ScrollView, and it won't scroll at all. Does anyone know that I've done wrong?

I've tried making the height 0dp and removing both instances of app:layout_constraintBottom_toBottomOf="parent", but it doesn't help. Below is the xml.

Thanks

Menu:
<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true"
    tools:context=".Menu">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/textView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_constraintTop_toTopOf="parent"
            android:text="Choose characters" />

        <RadioGroup
            android:layout_width="227dp"
            android:layout_height="721dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent">

            <CheckBox
                android:id="@+id/a"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ア a    イ i    ウ u    エ e    オ o" />

            <CheckBox
                android:id="@+id/k"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="カ ka    キ ki    ク ku    ケ ke    コ ko    キャ kya    キュ kyu    キョ kyo
" />

            <CheckBox
                android:id="@+id/s"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="サ sa    シ shi    ス su    セ se    ソ so    シャ sha    シュ shu    ショ sho
" />

            <CheckBox
                android:id="@+id/ta"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="タ ta    チ chi    ツ tsu    テ te    ト to    チャ cha    チュ chu    チョ cho" />

            <CheckBox
                android:id="@+id/na"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ナ na    ニ ni    ヌ nu    ネ ne    ノ no    ニャ nya    ニュ nyu    ニョ nyo" />

            <CheckBox
                android:id="@+id/h"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ハ ha    ヒ hi    フ fu    ヘ he    ホ ho    ヒャ hya    ヒュ hyu    ヒョ hyo" />

            <CheckBox
                android:id="@+id/m"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="マ ma    ミ mi ム mu    メ me    モ mo    ミャ mya    ミュ myu    ミョ myo" />

            <CheckBox
                android:id="@+id/y"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ヤ ya    ユ yu ヨ yo" />

            <CheckBox
                android:id="@+id/r"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ラ ra    リ ri    ル ru    レ re    ロ ro    リャ rya    リュ ryu    リョ ryo" />

            <CheckBox
                android:id="@+id/wa"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ワ wa" />

            <CheckBox
                android:id="@+id/n"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ン n" />            <CheckBox
                android:id="@+id/g"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ガ ga    ギ gi    グ gu    ゲ ge    ゴ go    ギャ gya    ギュ guy    ギョ gyo" />

            <CheckBox
                android:id="@+id/z"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ザ za    ジ ji    ズ zu    ゼ ze    ゾ zo    ジャ ja    ジュ ju    ジョ jo" />

            <CheckBox
                android:id="@+id/d"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ダ da    ヂ (ji)    ヅ (zu)    デ de    ド do" />

            <CheckBox
                android:id="@+id/b"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="バ ba    ビ bi    ブ bu    ベ be    ボ bo    ビャ bya    ビュ byu    ビョ byo" />

            <CheckBox
                android:id="@+id/p"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="パ pa    ピ pi    プ pu    ペ pe    ポ po    ピャ pya    ピュ pyu    ピョ pyo" />

            <CheckBox
                android:id="@+id/f"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ファ fa    フィ fi         フェ fe    フォ fo" />
            <CheckBox
                android:id="@+id/t"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ツァ tsa    ティ ti    トゥ tu" />

            <CheckBox
                android:id="@+id/w"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="ウェ we    ウォ wo" />

            <CheckBox
                android:id="@+id/all"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="all" />        </RadioGroup>

        <Button
            android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            android:text="Button"
            android:onClick="onClick"
            tools:layout_editor_absoluteX="18dp"
            tools:layout_editor_absoluteY="582dp" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</ScrollView>
 
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  • #2
I found the error.

The height of the radio group needed to be:
android:layout_height="wrap_content"
 
  • Informative
Likes berkeman

FAQ: Why doesn't my ScrollView scroll?

1. Why is my ScrollView not scrolling?

One common reason for a ScrollView not scrolling is that the content inside the ScrollView does not exceed the height of the ScrollView itself. Make sure that the content is larger than the ScrollView in order for scrolling to be enabled.

2. How can I enable scrolling in my ScrollView?

To enable scrolling in a ScrollView, you need to make sure that the content inside the ScrollView is larger than the ScrollView itself. This can be achieved by adding more content or increasing the size of the existing content.

3. Why is my ScrollView scrolling horizontally instead of vertically?

If your ScrollView is scrolling horizontally instead of vertically, it may be due to the layout or content inside the ScrollView. Check the orientation of the ScrollView and ensure that the content is set up to scroll in the desired direction.

4. Can I customize the scrolling behavior of my ScrollView?

Yes, you can customize the scrolling behavior of a ScrollView by adjusting properties such as scroll speed, scroll sensitivity, or scroll direction. You can also implement custom scrolling animations or effects to enhance the user experience.

5. What are some common pitfalls to avoid when working with ScrollViews?

Some common pitfalls to avoid when working with ScrollViews include not setting the correct content size, nesting multiple ScrollViews within each other, or using ScrollView within a layout that does not support scrolling. Make sure to carefully design and test your ScrollView to avoid these issues.

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