Long_tv_with_Scroll

1. Should use scroll view with Relative or Contraint layout IF text is too long

here tested found that scroll view with direct child of linear layout remove starting text for long string
so instead use Relative or Contraint layout
as Parent

Code 1

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:orientation="vertical"
    tools:context=".MainActivity">


    <ImageView
        android:id="@+id/imageView4"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:contentDescription="@string/pic_1"
        android:src="@drawable/icons8_github_256"
        android:backgroundTint="@color/white"
        />

    <ScrollView
        android:id="@+id/scrollView"
        android:layout_width="match_parent" or //wrap content
        android:layout_height="300dp"
        android:layout_below="@id/imageView4"
        >

        <TextView
            android:id="@+id/textView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="14sp"
            android:text="@string/some_text" />
    </ScrollView>

    <ImageView
        android:id="@+id/imageView3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/java"
        android:layout_below="@+id/scrollView"/>

</RelativeLayout>

2.More than One View Then Use

Scrollview ---> linearLayout or constraintlayout ---> have your textview or imageview

If you have more than ONE VIEW then have your textview or imageview under any layout not directly to the scroll view

in short more than one view should not be direct child of scroll view

As per Documentation

Code 2

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
    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:padding="10dp"
    tools:context=".NewsDetailActivity">

    <com.google.android.material.imageview.ShapeableImageView
        android:id="@+id/newsImage"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:scaleType="centerCrop"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.842"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.03"
        app:srcCompat="@drawable/img1">

    </com.google.android.material.imageview.ShapeableImageView>

    <com.google.android.material.textview.MaterialTextView
        android:id="@+id/newsHeading"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="start"
        android:text="Joe Biden appoints two prominent......"
        android:textSize="23sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.526"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/newsImage"
        app:layout_constraintVertical_bias="0.03">

    </com.google.android.material.textview.MaterialTextView>

    <ScrollView
        android:layout_width="376dp"  //or wrap content
        android:layout_height="200dp" //or 0dp but not match parent or wrap content
        android:layout_marginTop="12dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.742"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/newsHeading"
        app:layout_constraintVertical_bias="0.177">
        >

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/news_content"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:layout_constraintBottom_toBottomOf="parent">
            </TextView>
            
            //Your other view HERE 

        </androidx.constraintlayout.widget.ConstraintLayout>
    </ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>

3. If parent layout is linear layout then dont use layout gravity center in text view inside scroll view

VIDEO

UfbVkBQ.-.Imgur.mp4