Android Application Development Cookbook: 93 Recipes for Building Winning Apps

Recipe 2.14 Using the ScrollView

Android Versions

Level 1 and above

Permissions

None

Source Code to Download from Wrox.com

UsingScrollView.zip

A ScrollView is a special type of FrameLayout in that it enables users to scroll through a list of views that occupy more space than the physical display provides. The ScrollView can contain only one child view or ViewGroup, which normally is a LinearLayout. This recipe shows how to use the ScrollView.

Solution

Assume you have the following code snippet in the activity_main.xml file:

<ScrollView android:layout_width="match_parent" android:layout_height="match_parent" xmlns:android="http://schemas.android.com/apk/res/android" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <Button android:id="@+id/button1" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Button 1" /> <Button android:id="@+id/button2" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Button 2" /> <Button android:id="@+id/button3" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Button 3" /> <EditText android:id="@+id/txt" android:layout_width="match_parent" android:layout_height="600px" /> <Button android:id="@+id/button4" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Button 4" /> <Button android:id="@+id/button5" android:layout_width="match_parent" ...