How to make a TextView scrollable in a fragment?-CodePudding

I have created fragments inside an activity. Each fragment have a textview. I want to make all the textviews inside the fragments to be scroll-able. Below is my xml and java code. Thanks in advance

<FrameLayout 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"
    tools:context=".chemistry.AtomicNumber">

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

       
        <TextView
            android:id="@ id/atomicNumberDefinition"
            android:text="The atomic number..... "
            android:textAlignment="center"
            android:textColor="#000000"
            android:textSize="24sp"
            android:scrollbars="vertical"
           />


Java Code:

public class AtomicNumber extends Fragment {


    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";


    private String mParam1;
    private String mParam2;

    public AtomicNumber() {

    }


    public static AtomicNumber newInstance(String param1, String param2) {
        AtomicNumber fragment = new AtomicNumber();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_atomic_number, container, false);
    }
}

Please let me know how to write a proper code in the java file.

CodePudding user response：

I would suggest to use ScrollView:

<ScrollView
    android:layout_width="0dp"
    android:layout_height="0dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    android:orientation="vertical">

    <TextView
        android:id="@ id/atomicNumberDefinition"
        android:text="The atomic number..... "
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#000000"
        android:textSize="24sp" />
</ScrollView>

CodePudding user response：

You can using ScrollView or NestedScrollView. Beside RecycleView can using if you need scroll item of list.

CodePudding user response：

In your Fragment, access your TextView and set its MovementMethod to ScrollingMovementMethod.

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
  super.onViewCreated(view, savedInstanceState);
  final TextView textView = view.findViewById(R.id.atomicNumberDefinition);
  textView.setMovementMethod(new ScrollingMovementMethod());
}