[PPB] Tugas 6 - Membuat Aplikasi Kalkulator Sederhana

Nama : Ichlasul Hasanat

NRP : 5025201091

Kelas : PPB - I

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Pada pertemuan kali ini, kami diberikan tugas untuk membuat sistem kalkulator sederhana menggunakan Jetpack Compose dengan Android Studio. Berikut hasil source code beserta video demo dari aplikasi tersebut:

Github: Repository

Source Code:

MainActivity.kt

package com.example.tugasppb6

import android.os.Bundle
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.width
import androidx.compose.material3.Button
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.ui.Modifier
import androidx.compose.runtime.*
import androidx.compose.ui.unit.dp

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {

            var num1 by remember{
                mutableStateOf("0")
            }

            var num2 by remember{
                mutableStateOf("0")
            }
            Column {
                TextField(
                    value = num1,
                    onValueChange = { num1 = it; }
                )
                TextField(value = num2,
                    onValueChange = { num2 = it; }
                )
                Row{
                    Button(onClick ={
                        var result = num1.toInt() + num2.toInt()
                        Toast.makeText(applicationContext, 
                            "Result is $result",Toast.LENGTH_SHORT).show()
                    }){
                        Text(text="Add")
                    }
                    Spacer(modifier=Modifier.width(16.dp))
                    Button(onClick ={
                        var result = num1.toInt() - num2.toInt()
                        Toast.makeText(applicationContext, 
                            "Result is $result",Toast.LENGTH_SHORT).show()
                    }){
                        Text(text="Subtract")
                    }
                    Spacer(modifier=Modifier.width(16.dp))
                    Button(onClick ={
                        var result = num1.toInt() * num2.toInt()
                        Toast.makeText(applicationContext, 
                            "Result is $result",Toast.LENGTH_SHORT).show()
                    }){
                        Text(text="Multiply")
                    }
                    Spacer(modifier=Modifier.width(16.dp))
                    Button(onClick ={
                        var result = num1.toInt() / num2.toInt()
                        Toast.makeText(applicationContext, 
                            "Result is $result",Toast.LENGTH_SHORT).show()
                    }){
                        Text(text="Divide")
                    }
                }
            }
        }
    }
}

Video Demo: