Android Button is a sub class of TextView .
Android ImageButton is a sub class of ImageView .
XML Layout
file : activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" android:orientation="vertical" android:gravity="center"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button_label" android:id="@+id/button_01"/> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button_label" android:src="@android:drawable/ic_lock_idle_alarm" android:contentDescription="@string/button_label" android:id="@+id/image_button_01"/> </LinearLayout>
Activity
file : MainActivity.kt
package com.tutorialsbuzz.androidbutton import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.Toast import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) button_01.setOnClickListener { Toast.makeText(this@MainActivity, "Button Clicked ..", Toast.LENGTH_SHORT).show() } image_button_01.setOnClickListener { Toast.makeText(this@MainActivity, "Button Clicked ..", Toast.LENGTH_SHORT).show() } } }
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