Program JAVA: Metode Aritmatika Di Android Studio

Pada kesempatan kali ini kita akan membahas metode aritmatika pada Android Studio dengan projek membuat  Aplikasi Android Studio

Desain UI

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#5C0063"
        android:padding="20dp"
        android:text="APP SEKARANG"
        android:textAlignment="center"
        android:textAllCaps="true"
        android:textColor="#FFFFFF"
        android:textSize="20dp"
        android:textStyle="bold"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Data Peminjaman"
        android:textSize="24dp"
        android:layout_marginTop="20dp"
        app:layout_constraintTop_toBottomOf="@+id/textView"
        tools:layout_editor_absoluteX="0dp" />

    <EditText
        android:id="@+id/txtNomor"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="12dp"
        android:hint="Nomor Anggota"
        app:layout_constraintTop_toBottomOf="@+id/textView2"
        tools:layout_editor_absoluteX="0dp" />

    <EditText
        android:id="@+id/txtNama"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:hint="Nama Anggota"
        app:layout_constraintTop_toBottomOf="@+id/txtNomor"
        tools:layout_editor_absoluteX="0dp" />

    <EditText
        android:id="@+id/txtJmlPinjam"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:hint="Ansuran"
        android:inputType="number"
        app:layout_constraintTop_toBottomOf="@+id/txtNama"
        tools:layout_editor_absoluteX="0dp" />

    <EditText
        android:id="@+id/txtLamaAnsuran"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:hint="Lama Ansuran"
        android:inputType="number"
        app:layout_constraintTop_toBottomOf="@+id/txtJmlPinjam"
        tools:layout_editor_absoluteX="0dp" />

    <Button
        android:id="@+id/button"
        android:layout_width="122dp"
        android:layout_height="45dp"
        android:layout_marginTop="52dp"
        android:layout_marginEnd="144dp"
        android:onClick="Kirim"
        android:text="Kirim"
        android:textSize="20dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtLamaAnsuran" />

    <TextView
        android:id="@+id/lblBunga"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:text="Bunga : "
        app:layout_constraintTop_toBottomOf="@+id/button"
        tools:layout_editor_absoluteX="0dp" />

    <TextView
        android:id="@+id/lblAnsuran"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:text="Ansuran : "
        app:layout_constraintTop_toBottomOf="@+id/lblBunga"
        tools:layout_editor_absoluteX="0dp" />

    <TextView
        android:id="@+id/lblPembayaran"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:text="Bayar : "
        app:layout_constraintTop_toBottomOf="@+id/lblAnsuran"
        tools:layout_editor_absoluteX="0dp" />

</androidx.constraintlayout.widget.ConstraintLayout>

Program utuh :

package com.example.rpl_1;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

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

    public void Kirim(View view) {
        EditText Pinjaman = findViewById(R.id.txtJmlPinjam);
        EditText LamaAnsuran = findViewById(R.id.txtLamaAnsuran);

        TextView lBunga = findViewById(R.id.lblBunga);
        TextView lAnsuran = findViewById(R.id.lblAnsuran);
        TextView lBayar = findViewById(R.id.lblPembayaran);

        int pinjam = Integer.parseInt(Pinjaman.getText().toString());
        int lama = Integer.parseInt(LamaAnsuran.getText().toString());

        double bunga = 0.04 * pinjam;
        int ansuran = pinjam / lama;
//        bunga = Integer.parseInt(String.valueOf(bunga));
        double bayar = ansuran + bunga;


        lBunga.setText(Double.toString(bunga));
        lAnsuran.setText(Integer.toString(ansuran));
        lBayar.setText(Double.toString(bayar));
    }
}