Hello Readers! In this post, we are going to learn how to create and use android scrollView programmatically in any android application. We will also learn to add scrollView in linearLayout programmatically in any application.

Output

Tutorialwing Android Dynamic ScrollView Output

Getting Started

At first, we will create an android application. Then, we will use scrollView widget in the application.

1. Creating New Project

Follow the steps below to create a new project. Please ignore the steps if you have already created a new project.

Now, we will modify xml and java file to use android scrollView programmatically.

2. Modify values folder

Open res/values/strings.xml file and add below code into it.

<resources>
	<string name="app_name">DynamicScrollView</string>
</resources>

3. Download Drawable Resources Needed

You need some images, stored in res/drawable folder, that will be used in the application. These drawable images will be used by scrollView created dynamically in the application.

4. Modify Layout Folder

Open res/layout/activity_main.xml file. Then, add below code into it.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
	android:id="@+id/rootContainer"
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:orientation="vertical">

</LinearLayout>

In activity_main.xml file, we have defined linearLayout, with id rootContainer, that will act as container for the scrollView widget created programmatically in the application.

5. Create Android ScrollView Programmatically / Dynamically

Open app/src/main/java/com.tutorialwing.dynamicscrollview/MainActivity.java file and add below code into it.

package com.tutorialwing.dynamicscrollview;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;

public class MainActivity extends AppCompatActivity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		ScrollView scrollView = new ScrollView(this);
		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
		scrollView.setLayoutParams(layoutParams);

		LinearLayout linearLayout = new LinearLayout(this);
		LinearLayout.LayoutParams linearParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		linearLayout.setOrientation(LinearLayout.VERTICAL);
		linearLayout.setLayoutParams(linearParams);

		scrollView.addView(linearLayout);

		ImageView imageView1 = new ImageView(this);
		LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		params1.setMargins(0, 30, 0, 30);
		params1.gravity = Gravity.CENTER;
		imageView1.setLayoutParams(params1);
		imageView1.setImageResource(R.drawable.guava);
		linearLayout.addView(imageView1);

		ImageView imageView2 = new ImageView(this);
		LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		params2.setMargins(0, 0, 0, 30);
		params2.gravity = Gravity.CENTER;
		imageView2.setLayoutParams(params2);
		imageView2.setImageResource(R.drawable.jackfruit);
		linearLayout.addView(imageView2);

		ImageView imageView3 = new ImageView(this);
		LinearLayout.LayoutParams params3 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		params3.setMargins(0, 0, 0, 30);
		params3.gravity = Gravity.CENTER;
		imageView3.setLayoutParams(params3);
		imageView3.setImageResource(R.drawable.mix_fruit);
		linearLayout.addView(imageView3);

		ImageView imageView4 = new ImageView(this);
		LinearLayout.LayoutParams params4 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		params4.setMargins(0, 0, 0, 30);
		params4.gravity = Gravity.CENTER;
		imageView4.setLayoutParams(params4);
		imageView4.setImageResource(R.drawable.pomegranate);
		linearLayout.addView(imageView4);

		ImageView imageView5 = new ImageView(this);
		LinearLayout.LayoutParams params5 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		params5.setMargins(0, 0, 0, 30);
		params5.gravity = Gravity.CENTER;
		imageView5.setLayoutParams(params5);
		imageView5.setImageResource(R.drawable.strawberry);
		linearLayout.addView(imageView5);

		ImageView imageView6 = new ImageView(this);
		LinearLayout.LayoutParams params6 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		params6.setMargins(0, 0, 0, 30);
		params6.gravity = Gravity.CENTER;
		imageView6.setLayoutParams(params6);
		imageView6.setImageResource(R.drawable.zespri_kiwi);
		linearLayout.addView(imageView6);

		LinearLayout linearLayout1 = findViewById(R.id.rootContainer);
		if (linearLayout1 != null) {
			linearLayout1.addView(scrollView);
		}
	}
}

We have created scrollView in java file (i.e. in MainActivity.java file). Then, we have created and added a linearLayout as direct child in scrollView. After that we have created and added 6 imageView widgets in that linearLayout. After that, we have added scrollView into linearLayout, having id rootContainer.

Since AndroidManifest.xml file is very important in any android project. We are also going to see the content inside this file.

AndroidManifest.xml file

Code inside src/main/AndroidManifest.xml file would look like below –

<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.tutorialwing.dynamicscrollview"
		  xmlns:android="http://schemas.android.com/apk/res/android">

	<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>

When we run the application, we will get output as shown above.

That’s the end of tutorial on Creating Android ScrollView Programmatically.