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

Output

Tutorialwing Android Dynamic ImageButton Output

Getting Started

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

2. Modify values folder

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

<resources>
	<string name="app_name">DynamicImageButton</string>
	<string name="img_btn_clicked">You clicked ImageButton</string>
</resources>

No other values folders have been modified. So, we are not going to mention them here.

3. 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="match_parent"
	android:gravity="center"
	android:orientation="vertical">

</LinearLayout>

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

4. Create Android ImageButton Programmatically / Dynamically

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

package com.tutorialwing.dynamicimagebutton;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

		final ImageButton imageButton = new ImageButton(this);
		imageButton.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
		imageButton.setImageResource(R.mipmap.ic_launcher);

		imageButton.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				Toast.makeText(MainActivity.this, R.string.img_btn_clicked, Toast.LENGTH_SHORT).show();
			}
		});

		LinearLayout linearLayout = findViewById(R.id.rootContainer);
		// Add ImageButton to LinearLayout
		if (linearLayout != null) {
			linearLayout.addView(imageButton);
		}
	}
}

In MainActivity.java file, we have create imageButton programmatically. Then, we have set layout params and image in it. After that, we have set a listener clickListener to show a toast message when it is clicked. At last, we have added this newly created imageButton in linearLayout, having id rootContainer. Similarly, you can add imageButton in relativeLayout or frameLayout etc.

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.dynamicimagebutton"
		  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 imageButton Programmatically.