mjshoaib / alertdialog

alertdialog

xml file-

<androidx.constraintlayout.widget.ConstraintLayout 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="match_parent">

<TextView
    android:id="@+id/txtAlert"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="200dp"
    android:textSize="25sp"
    android:text="Alert Dialog Box"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<Button
    android:id="@+id/btnAlert"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="22dp"
    android:layout_marginStart="20dp"
    android:layout_marginEnd="20dp"
    android:text="Show Alert Dialog"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@id/txtAlert" />

</androidx.constraintlayout.widget.ConstraintLayout>

java file- package com.example.alertdialog;

import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint; import android.content.DialogInterface; import android.os.Bundle; import android.widget.Button; import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

    @SuppressLint({"MissingInflatedId", "LocalSuppress"})
    Button show = findViewById(R.id.btnAlert);

    show.setOnClickListener(view -> {
        showAlertDialog();
    });

}

private void showAlertDialog() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("Alert Dialog");
    builder.setMessage("This is an alert dialog.");

    builder.setPositiveButton("OK", (dialogInterface, i) ->
            Toast.makeText(MainActivity.this,"OK Button Clicked!!",Toast.LENGTH_SHORT).show());

    builder.setNegativeButton("CANCEL", (dialogInterface, i) ->
            Toast.makeText(MainActivity.this, "CANCEL Button Clicked!!", Toast.LENGTH_SHORT).show());

    AlertDialog dialog = builder.create();
    dialog.show();

}

}