MainActivity.java
package com.cfsuman.androidtutorials;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import androidx.appcompat.app.AlertDialog;
public class MainActivity extends Activity {
private MainActivity mContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Get the context
mContext = this;
// Get the widgets reference from XML layout
Button button = findViewById(R.id.button);
// Button click listener
button.setOnClickListener(v -> {
// Build an AlertDialog
AlertDialog.Builder builder = new AlertDialog
.Builder(mContext);
LayoutInflater inflater = getLayoutInflater();
View dialogView = inflater.inflate(
R.layout.alertdialog_custom_view,
null);
// Set the custom layout as alert dialog view
builder.setView(dialogView);
// Custom alert dialog view widgets reference
Button buttonYes = (Button) dialogView
.findViewById(R.id.buttonYes);
Button buttonNo = (Button) dialogView
.findViewById(R.id.buttonNo);
Button buttonCancel = (Button) dialogView
.findViewById(R.id.buttonCancel);
// Create the alert dialog
AlertDialog dialog = builder.create();
// Set positive/yes button click listener
buttonYes.setOnClickListener(view -> {
// Dismiss the alert dialog
dialog.cancel();
showToast("Yes button clicked");
});
// Set negative/no button click listener
buttonNo.setOnClickListener(view -> {
// Dismiss the alert dialog
dialog.cancel();
showToast("No button clicked");
});
// Set cancel/neutral button click listener
buttonCancel.setOnClickListener(view -> {
// Dismiss/cancel the alert dialog
dialog.cancel();
showToast("Cancel button clicked");
});
// Display the custom alert dialog on interface
dialog.show();
});
}
// Method to show toast message
private void showToast(String message){
Toast.makeText(
mContext,message,Toast.LENGTH_SHORT).show();
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#DCDCDC"
android:padding="32dp">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show AlertDialog"
android:textAllCaps="false"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
alertdialog_custom_view.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#F8F8F8"
android:padding="12dp">
<TextView
android:id="@+id/tvTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Terms."
android:textStyle="bold"
android:textSize="19sp"
android:fontFamily="sans-serif"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/tvMessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:textSize="17sp"
android:fontFamily="sans-serif"
android:text="Are you agree with the terms?"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvTitle" />
<Button
android:id="@+id/buttonYes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:text="Yes"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvMessage" />
<Button
android:id="@+id/buttonNo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:text="No"
app:layout_constraintBottom_toBottomOf="@+id/buttonYes"
app:layout_constraintEnd_toStartOf="@+id/buttonYes" />
<Button
android:id="@+id/buttonCancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cancel"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
