Smooth scrolling in scrollView

Question

I am new to android and I have created a simple block of code which has a scrollView and an image. I want this scrollview to scroll smoothly. What do I have to do for that ? I have gone through many materials over internet, but all of those use hard terminologies which I'm not able to understand. Can someone please help me ? Thanks.

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" xmlns:android="http://schemas.android.com/apk/res/android" > <ScrollView android:id="@+id/scroll_view" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/colorPrimaryDark"> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/text_view" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/top_string" android:textColor="@android:color/white" android:textSize="16dp" android:textScaleX="1.5" /> <ImageView android:id="@+id/img" android:layout_width="300dp" android:layout_height="150dp" android:src="@drawable/dg_truck_main" android:layout_gravity="center_horizontal" android:background="@android:color/holo_blue_light" android:layout_marginTop="10dp" android:layout_centerHorizontal="true" android:layout_below="@id/text_view" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/top_string2" android:textColor="@android:color/white" android:textSize="16dp" android:textScaleX="1.5" android:layout_marginTop="50dp" android:layout_below="@id/img" /> </RelativeLayout> </ScrollView> </RelativeLayout>

Set android:fillViewPort="true" for it. But my advise to use NestedScrollView. — Piyush
– Piyush, Commented Oct 5, 2018 at 7:12

Pranay Soni · Accepted Answer · 2018-10-05 07:14:57Z

You have added ScrollView inside RelativeLayout, what I suggest is that you should place RelativeLayout inside ScrollView tag. Please go through below code,

<?xml version="1.0" encoding="utf-8"?> <ScrollView android:id="@+id/scroll_view" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/colorPrimaryDark"> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" xmlns:android="http://schemas.android.com/apk/res/android"> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/text_view" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/top_string" android:textColor="@android:color/white" android:textSize="16dp" android:textScaleX="1.5" /> <ImageView android:id="@+id/img" android:layout_width="300dp" android:layout_height="150dp" android:src="@drawable/dg_truck_main" android:layout_gravity="center_horizontal" android:background="@android:color/holo_blue_light" android:layout_marginTop="10dp" android:layout_centerHorizontal="true" android:layout_below="@id/text_view" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/top_string2" android:textColor="@android:color/white" android:textSize="16dp" android:textScaleX="1.5" android:layout_marginTop="50dp" android:layout_below="@id/img" /> </RelativeLayout> </RelativeLayout> </ScrollView>

okay Pranay I changed my code to what you suggested, what's next ?
@constant_learner Please run this project on the device and try to scroll on this screen.
@constant_learner an upvote to this would be help me contribute more.

Priyavrat Talyan · Accepted Answer · 2022-08-29 05:45:20Z

I had a hard time resolving this issue. Finally found a solution very simple and very smooth outcome. In your recycler view set nested scrolling to false. Two ways to achieve it.

Through xml file -

android:nestedScrollingEnabled="false"
Through java code -

recyclerView.isNestedScrollingEnabled = false

this answer is the simplest and best way to make smoothing more responsive and smoother!

Jane · Accepted Answer · 2018-10-05 09:35:01Z

Okay I got my answer. Since I was new to android, I thought that "smooth scroll" is something else and we have to integrate it into our project. But a scrollView already gives smooth scrolling and so we do not need to write any extra code for that.

To improve your own answer, post the result of the scroll view with the smoothScroll function being called

Mazhar Iqbal · Accepted Answer · 2021-03-25 09:24:54Z

//to make the scrollview faster //add the below line in xml

 android:fillViewport="true"

//also add the following line to your java class // to make the scroll view faster

 scrollView.fullScroll(View.FOCUS_DOWN); scrollView.setSmoothScrollingEnabled(true);

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