Tugas Pertemuan 7 Pemrograman Perangkat Bergerak B

Nama    : Fadaukas Daffa Tajuddin

NRP      : 5025231149

Kelas    : PPB (B)

Membuat Halaman Login

Dalam proyek ini, dilakukan pengerjaan studi kasus pembuatan halaman login menggunakan Jetpack Compose. Halaman ini menyediakan UI untuk pengguna masuk ke akun mereka dengan input email dan password, serta alternatif login melalui Facebook, Google, dan X (Twitter).

1. Code Program

package com.example.loginpage

import android.util.Log
import androidx.compose.foundation.Image
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.material3.Button
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp

@Composable
fun LoginScreen(modifier: Modifier = Modifier) {
    var email by remember {
        mutableStateOf("")
    }

    var password by remember {
        mutableStateOf("")
    }

    Column(
        modifier = modifier.fillMaxSize().padding(20.dp),
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        Image(
            painter = painterResource(id = R.drawable.login),
            contentDescription = "Login Image",
            modifier = Modifier.size(200.dp)
        )

        Text(text = "Welcome Back", fontSize = 28.sp, fontWeight = FontWeight.Bold)

        Spacer(modifier = Modifier.height(4.dp))

        Text(text = "Login to your account", fontSize = 18.sp)

        Spacer(modifier = Modifier.height(4.dp))

        OutlinedTextField(value = email, onValueChange = {

            email = it
        }, label = {
            Text(text = "Email address")
        })

        Spacer(modifier = Modifier.height(4.dp))

        OutlinedTextField(value = password, onValueChange = {
            password = it
        }, label = {
            Text(text = "Password")
        }, visualTransformation = PasswordVisualTransformation())

        Spacer(modifier = Modifier.height(16.dp))

        Button(onClick = {
            Log.i("Credential", "Email: $email, Password: $password")
        }) {
            Text(text = "Login")
        }

        Spacer(modifier = Modifier.height(32.dp))

        Text(text = "Forgot Password?", modifier = Modifier.clickable {

        })

        Spacer(modifier = Modifier.height(32.dp))

        Text(text = "Or sign in with")

        Row (
            modifier = Modifier.fillMaxWidth().padding(40.dp),
            horizontalArrangement = Arrangement.SpaceEvenly
        ) {
            Image(painter = painterResource(
                id = R.drawable.facebook),
                contentDescription = "Facebook",
                modifier = Modifier.size(60.dp).clickable {
                }
            )

            Image(painter = painterResource(
                id = R.drawable.google),
                contentDescription = "Google",
                modifier = Modifier.size(60.dp).clickable {
                }
            )

            Image(painter = painterResource(
                id = R.drawable.x),
                contentDescription = "X",
                modifier = Modifier.size(60.dp).clickable {
                }
            )
        }
    }
}

@Preview(showBackground = true)
@Composable
fun PreviewLoginScreen(){
    LoginScreen() }

Fitur Utama:

• Input text email dan password untuk kredensial login.

• Tombol login untuk memproses input dan mengoutputkan kredensial ke Logcat.

• Text "Forgot Password?" sebagai tautan yang bisa diklik.

• Opsi login menggunakan platform pihak ketiga berupa image yang bisa diklik.

2. Screenshot Aplikasi