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

Output

Tutorialwing Android Dynamic HorizontalScrollView Output

Getting Started

At first, we will create an android application. Then, we will use horizontalScrollView 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 horizontalScrollView programmatically.

2. Modify values folder

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

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

3. Downloaded Drawable Resources Needed

You will need images, stored in res/drawable folder, to be used in the application. These drawable images will be used by horizontalScrollView 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 horizontalScrollView.

5. Create Android HorizontalScrollView Programmatically / Dynamically

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

package com.tutorialwing.dynamichorizontalscrollview;

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

public class MainActivity extends AppCompatActivity {

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

		HorizontalScrollView horizontalScrollView = new HorizontalScrollView(this);
		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
		horizontalScrollView.setLayoutParams(layoutParams);

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

		horizontalScrollView.addView(linearLayout);

		ImageView imageView1 = new ImageView(this);
		LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		params1.setMargins(30, 20, 30, 0);
		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, 20, 30, 0);
		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, 20, 30, 0);
		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, 20, 30, 0);
		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, 20, 30, 0);
		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, 20, 30, 0);
		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(horizontalScrollView);
		}
	}
}

We have defined horizontalScrollView in java file (i.e. in MainActivity.java file). Then, we have set layout params etc. in it. After that, we have created a direct child, i.e. LinearLayout, of horizontalScrollView. Note that horizontalScrollView can have only one direct child. Now, We have defined some imageViews as a child view of linearLayout (that is added as child view of horizontalScrollView). Then, we have added horizontalScrollView into linearLayout, having id rootContainer, defined in xml file.

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.dynamichorizontalscrollview"
		  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 horizontalScrollView Programmatically.