Cannot Scroll Using scrollbar in android

Question

I was trying to implement the scrollView and scroll using the scrollbar. But, It isn't working.

This is whole xml file.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" tools:context=".ScrollingActivity"> <ScrollView android:id="@+id/scroll" android:layout_width="wrap_content" android:scrollbars="vertical" android:scrollbarThumbVertical="@color/teal_200" android:scrollbarSize="20dp" android:layout_height="wrap_content"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/large_text"/> </ScrollView> </LinearLayout>

and java is default file.

Main Issue

ScrollBar is appearing and can be seen by user. ScrollBar changes the position as well. But, when User wants to scroll using scrollbar, scrollbar isn't responding. It's like we cannot touch the scrollbar, Instead the textView is selected will be swiped.

My Reasearch

Before anything, I did try to implement GestureDetecter as well as went through several links and google.

These are just two links which is most related to my issue. So, I tried to implement customScrollView as well. Which resulted in app crash. There was use of deprecated api too. So, I didn't bother to solve the issue. Instead I focused on replacing that api and getting that class working. But, unfortunately even I got the replacement it wasn't working. I skipped the file because it was way lengthy.

Yes... It's the default large text from scrolling activity in create new project menu. I first tried that project. But, It wasn't working in that too. So, I simplified it. And kept only needed elements. — Anirudhdhsinh Jadeja
– Anirudhdhsinh Jadeja, Commented Jun 22, 2021 at 4:32

Elango · Accepted Answer · 2021-06-22 07:05:35Z

You no need to use ScrollBar

Try with is

In you XML

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" tools:context=".ScrollingActivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:scrollbars = "vertical" android:text="@string/large_text"/> </LinearLayout>

And in your java

yourtextview.setMovementMethod(new ScrollingMovementMethod());

It's Actually a default large text. Which is too much long. So, textview is scrollable. But, scrollbar is not working. So, textview is indeed exiting the full screen and also scrollable.
This is just a llinear layout layout. It cannot be scrolled....

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