ScrollView in Android
Scrollview is used to define the content on the screen. It provides the platform in which content is adjustable according to the content display in a view. ScrollView has several attributes and methods which is helpful in developing the interactive user interface and data.
Attributes
• Android: viewport: It defines the content is either filled to the Viewport or not.
Methods
• arrowScroll(): it provides Up and down arrow view on screen to scroll the content.
• computeScroll(): it called by a parent to upgrade their child with maximum(x,y) coordinates for computing the number of scrolled event.
• FullScroll(): it can respond to Home/End which means it can move up and down with immediate action.
• PageScroll() : It can generate response on PageUp/PageDown keystroke.
• ScoreTo() : it can provide a view in which user can move along x-axis and y-axis of a screen.
• isViewPort() : it checks whether the viewport is enabled.
Android_Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mapsample.msclient009.scrollview">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Main_Activity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:orientation="vertical"
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="com.mapsample.msclient009.scrollview.MainActivity">
<ScrollView
android:id="@+id/SView"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:background="#F0E991"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:padding="20dp"
android:id="@+id/tv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="20dp"
android:textColor="#FF0066"
android:text="RED"/>
<TextView
android:padding="20dp"
android:textColor="#199119"
android:textSize="20dp"
android:text="Green"
android:gravity="center"
android:id="@+id/tv2"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:padding="20dp"
android:textColor="#0090FF"
android:textSize="20dp"
android:text="Blue"
android:gravity="center"
android:id="@+id/tv3"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:padding="20dp"
android:textColor="#000"
android:textSize="20dp"
android:text="Black"
android:gravity="center"
android:id="@+id/tv4"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:padding="20dp"
android:background="#A9DFAD"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btn"
android:text="First"/>
<Button
android:padding="20dp"
android:background="#999989"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btn1"
android:text="second"/>
<Button
android:padding="20dp"
android:background="#FF90AA"
android:id="@+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Third" />
<Button
android:padding="20dp"
android:background="#11AAFF"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btn3"
android:text="fourth"/>
<Button
android:padding="20dp"
android:background="#22AA22"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btn4"
android:text="fifth"/>
</LinearLayout>
</ScrollView>
</LinearLayout>
Main_Activity.java
package com.mapsample.msclient009.scrollview;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate ( savedInstanceState );
setContentView ( R.layout.activity_main );
}
}
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