Tablas de multiplicar en Android Studio con material3 – Operating systems, scripting, PowerShell and security

Android

package com.example.myapplication

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.core.tween
import androidx.compose.animation.fadeIn
import androidx.compose.animation.slideInVertically
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.itemsIndexed
import androidx.compose.material3.*
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.example.myapplication.ui.theme.MyApplicationTheme
import kotlinx.coroutines.delay

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

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun MultiplicationApp() {
    var number by remember { mutableStateOf("") }
    var table by remember { mutableStateOf<List<String>>(emptyList()) }
    var visibleItems by remember { mutableStateOf(0) }

    Scaffold(
        topBar = {
            TopAppBar(
                title = { Text("Tablas de multiplicar", fontWeight = FontWeight.Bold) },
                colors = TopAppBarDefaults.topAppBarColors(
                    containerColor = MaterialTheme.colorScheme.primaryContainer,
                    titleContentColor = MaterialTheme.colorScheme.onPrimaryContainer
                )
            )
        }
    ) { innerPadding ->
        Column(
            modifier = Modifier
                .padding(innerPadding)
                .padding(16.dp)
                .fillMaxSize(),
            horizontalAlignment = Alignment.CenterHorizontally
        ) {
            Text(
                text = "Introduce un número para ver su tabla de multiplicar:",
                fontSize = 18.sp,
                modifier = Modifier.padding(bottom = 8.dp)
            )

            OutlinedTextField(
                value = number,
                onValueChange = { input ->
                    if (input.all { it.isDigit() }) number = input
                },
                label = { Text("Número") },
                singleLine = true,
                modifier = Modifier.fillMaxWidth()
            )

            Spacer(modifier = Modifier.height(12.dp))

            Button(
                onClick = {
                    val n = number.toIntOrNull()
                    if (n != null) {
                        table = (1..10).map { "$n × $it = ${n * it}" }
                        visibleItems = 0
                    } else {
                        table = emptyList()
                    }
                },
                modifier = Modifier.fillMaxWidth(),
                enabled = number.isNotEmpty()
            ) {
                Text("Generar tabla")
            }

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

            if (table.isNotEmpty()) {
                Text(
                    text = "Tabla del ${number.toInt()}",
                    fontSize = 22.sp,
                    fontWeight = FontWeight.Bold,
                    color = MaterialTheme.colorScheme.primary
                )

                Spacer(modifier = Modifier.height(8.dp))

                LazyColumn(
                    modifier = Modifier
                        .fillMaxWidth()
                        .weight(1f),
                    horizontalAlignment = Alignment.CenterHorizontally
                ) {
                    itemsIndexed(table) { index, item ->
                        // Animar la aparición progresiva de cada línea
                        LaunchedEffect(table) {
                            delay(index * 100L)
                            visibleItems = index + 1
                        }

                        AnimatedVisibility(
                            visible = index < visibleItems,
                            enter = fadeIn(animationSpec = tween(400)) +
                                    slideInVertically(initialOffsetY = { it / 2 }, animationSpec = tween(400))
                        ) {
                            Card(
                                modifier = Modifier
                                    .padding(vertical = 4.dp)
                                    .fillMaxWidth(),
                                colors = CardDefaults.cardColors(
                                    containerColor = MaterialTheme.colorScheme.surfaceVariant
                                ),
                                elevation = CardDefaults.cardElevation(defaultElevation = 2.dp)
                            ) {
                                Text(
                                    text = item,
                                    fontSize = 20.sp,
                                    modifier = Modifier
                                        .padding(12.dp)
                                        .align(Alignment.CenterHorizontally)
                                )
                            }
                        }
                    }
                }
            } else {
                Text(
                    text = "Aún no has generado ninguna tabla.",
                    fontSize = 16.sp,
                    color = MaterialTheme.colorScheme.onSurfaceVariant,
                    modifier = Modifier.padding(top = 16.dp)
                )
            }
        }
    }
}

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package com.example.myapplication

import android.os.Bundle

import androidx.activity.ComponentActivity

import androidx.activity.compose.setContent

import androidx.activity.enableEdgeToEdge

import androidx.compose.animation.AnimatedVisibility

import androidx.compose.animation.core.tween

import androidx.compose.animation.fadeIn

import androidx.compose.animation.slideInVertically

import androidx.compose.foundation.layout.*

import androidx.compose.foundation.lazy.LazyColumn

import androidx.compose.foundation.lazy.itemsIndexed

import androidx.compose.material3.*

import androidx.compose.runtime.*

import androidx.compose.ui.Alignment

import androidx.compose.ui.Modifier

import androidx.compose.ui.text.font.FontWeight

import androidx.compose.ui.unit.dp

import androidx.compose.ui.unit.sp

import com.example.myapplication.ui.theme.MyApplicationTheme

import kotlinx.coroutines.delay

class MainActivity : ComponentActivity() {

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

enableEdgeToEdge()

setContent {

MyApplicationTheme {

MultiplicationApp()

}

@OptIn(ExperimentalMaterial3Api::class)

@Composable

fun MultiplicationApp() {

var number by remember { mutableStateOf("") }

var table by remember { mutableStateOf<List<String>>(emptyList()) }

var visibleItems by remember { mutableStateOf(0) }

Scaffold(

topBar = {

TopAppBar(

title = { Text("Tablas de multiplicar", fontWeight = FontWeight.Bold) },

colors = TopAppBarDefaults.topAppBarColors(

containerColor = MaterialTheme.colorScheme.primaryContainer,

titleContentColor = MaterialTheme.colorScheme.onPrimaryContainer

)

}

) { innerPadding ->

Column(

modifier = Modifier

.padding(innerPadding)

.padding(16.dp)

.fillMaxSize(),

horizontalAlignment = Alignment.CenterHorizontally

) {

Text(

text = "Introduce un número para ver su tabla de multiplicar:",

fontSize = 18.sp,

modifier = Modifier.padding(bottom = 8.dp)

)

OutlinedTextField(

value = number,

onValueChange = { input ->

if (input.all { it.isDigit() }) number = input

label = { Text("Número") },

singleLine = true,

modifier = Modifier.fillMaxWidth()

)

Spacer(modifier = Modifier.height(12.dp))

Button(

onClick = {

val n = number.toIntOrNull()

if (n != null) {

table = (1..10).map { "$n × $it = ${n * it}" }

visibleItems = 0

} else {

table = emptyList()

}

modifier = Modifier.fillMaxWidth(),

enabled = number.isNotEmpty()

) {

Text("Generar tabla")

}

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

if (table.isNotEmpty()) {

Text(

text = "Tabla del ${number.toInt()}",

fontSize = 22.sp,

fontWeight = FontWeight.Bold,

color = MaterialTheme.colorScheme.primary

)

Spacer(modifier = Modifier.height(8.dp))

LazyColumn(

modifier = Modifier

.fillMaxWidth()

.weight(1f),

horizontalAlignment = Alignment.CenterHorizontally

) {

itemsIndexed(table) { index, item ->

// Animar la aparición progresiva de cada línea

LaunchedEffect(table) {

delay(index * 100L)

visibleItems = index + 1

}

AnimatedVisibility(

visible = index < visibleItems,

enter = fadeIn(animationSpec = tween(400)) +

slideInVertically(initialOffsetY = { it / 2 }, animationSpec = tween(400))

) {

Card(

modifier = Modifier

.padding(vertical = 4.dp)

.fillMaxWidth(),

colors = CardDefaults.cardColors(

containerColor = MaterialTheme.colorScheme.surfaceVariant

elevation = CardDefaults.cardElevation(defaultElevation = 2.dp)

) {

Text(

text = item,

fontSize = 20.sp,

modifier = Modifier

.padding(12.dp)

.align(Alignment.CenterHorizontally)

)

}

} else {

Text(

text = "Aún no has generado ninguna tabla.",

fontSize = 16.sp,

color = MaterialTheme.colorScheme.onSurfaceVariant,

modifier = Modifier.padding(top = 16.dp)

)

}

Tablas de multiplicar en Android Studio con material3 (Android)

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