android custom alert dialog code example

Example 1: android custom AlertDialog theme

val builder: AlertDialog.Builder = AlertDialog.Builder(ContextThemeWrapper(this, R.style.AlertDialogTheme))
        
<!-- AlertDialog Style-->
<style name="AlertDialogTheme">
  <item name="android:background">@drawable/dialog_background</item>
</style>

Example 2: custom alert dialog in android kotlin

You can use below code for a custom Dialog. It's my working code.

 private fun showDialog(title: String) {
    val dialog = Dialog(activity)
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
    dialog.setCancelable(false)
    dialog.setContentView(R.layout.custom_layout)
    val body = dialog.findViewById(R.id.body) as TextView
    body.text = title
    val yesBtn = dialog.findViewById(R.id.yesBtn) as Button
    val noBtn = dialog.findViewById(R.id.noBtn) as TextView
    yesBtn.setOnClickListener {
        dialog.dismiss()
    }
    noBtn.setOnClickListener { dialog.dismiss() }
    dialog.show()

}

Example 3: custom dialog in android

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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="250dp"
    android:layout_gravity="center"
    android:layout_marginLeft="55dp"
    android:layout_marginRight="55dp"
    android:gravity="center">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center_vertical"
        android:gravity="center_vertical"
        android:orientation="vertical">

        <android.support.v7.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="165dp"
            android:layout_gravity="center"
            android:layout_marginEnd="60dp"
            android:layout_marginStart="60dp"
            app:cardCornerRadius="8dp"
            app:cardElevation="15dp">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="14dp"
                android:gravity="center"
                android:text="Quit Earning?"
                android:textColor="@android:color/black"
                android:textSize="20dp"
                android:textStyle="bold" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:layout_marginEnd="20dp"
                android:layout_marginStart="20dp"
                android:gravity="center"
                android:text="You are 400pts. away from \n unlocking rewards. quit Earning?"
                android:textSize="18dp"
                android:textStyle="bold" />

        </android.support.v7.widget.CardView>
    </LinearLayout>

    <FrameLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:id="@+id/frmNo"
        android:layout_marginRight="45dp"
        android:layout_marginTop="75dp">

        <android.support.design.widget.FloatingActionButton
            android:layout_width="60dp"
            android:layout_height="60dp"
            android:src="@android:color/transparent"
            app:backgroundTint="@color/fab2" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:elevation="6dp"
            android:text="No"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textColor="@android:color/white"
            android:textStyle="bold" />
    </FrameLayout>

    <FrameLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:id="@+id/frmOk"
        android:layout_marginLeft="50dp"
        android:layout_marginTop="75dp">

        <android.support.design.widget.FloatingActionButton
            android:layout_width="60dp"
            android:layout_height="60dp"
            android:src="@android:color/transparent"
            app:backgroundTint="@color/fab1" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:elevation="6dp"
            android:text="Ok"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textColor="@android:color/white"
            android:textStyle="bold" />
    </FrameLayout>
</FrameLayout>