How to make ScrollView in Android or Android Studio

The ScrollView class can be used to contain one View that might be to big too fit on one screen. ScrollView will is this case display a scroll bar to scroll the context.

Of course this View can be a layout which can then contain other elements.

Create an android project  with the activity "ScrollView". Create the following layout and class.

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/LinearLayout01"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/TextView01"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:paddingLeft="8dip"
            android:paddingRight="8dip"
            android:paddingTop="8dip"
            android:text="This is a header"
            android:textAppearance="?android:attr/textAppearanceLarge" >
        </TextView>

        <TextView
            android:id="@+id/TextView02"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="1.0"
            android:text="@+id/TextView02" >
        </TextView>

        <LinearLayout
            android:id="@+id/LinearLayout02"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <Button
                android:id="@+id/Button01"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1.0"
                android:text="Submit" >
            </Button>

            <Button
                android:id="@+id/Button02"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1.0"
                android:text="Cancel" >
            </Button>
        </LinearLayout>
    </LinearLayout>

</ScrollView> 

Now, in Main Class there should be, 

public class ScrollView extends Activity {
    

    @Override
    public void onCreate(Bundle savedInstanceState)
       {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
        TextView textView = (TextView) findViewById(R.id.TextView02);
        String string="";
          for (int i=0; i < 100; i++)
           {
                  string += "PrAndroid,com ";
          }
         textView .setText(string);
        }
   }

The attribute "android:fillViewport="true" ensures that the scrollview

 is set to the full screen even if the elements are smaller  then one

 screen and the "layout_weight" tell the android system thatthese 

elements should be extended.