Generar un número aleatorio pulsando un botón en Android Studio | Operating systems, scripting, PowerShell and security

Android, Kotlin

package com.example.myapplication

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Button
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

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

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun MyApp() {
    Surface(
        modifier = Modifier.fillMaxSize(),
        color = MaterialTheme.colorScheme.background
    ) {
        Column(
            modifier = Modifier.fillMaxSize(),
            horizontalAlignment = Alignment.CenterHorizontally,
            verticalArrangement = androidx.compose.foundation.layout.Arrangement.Center
        ) {
            val (numberText, setNumberText) = remember { mutableStateOf("") }
            val (generatedNumber, setGeneratedNumber) = remember { mutableStateOf("") }

            TextField(
                value = numberText,
                onValueChange = {
                    // Mantén el número introducido en la caja de texto
                    setNumberText(it.takeIf { it.all { char -> char.isDigit() } } ?: "")
                },
                label = { Text("Introduce un número") },
                modifier = Modifier.padding(16.dp)
            )

            Button(
                onClick = {
                    val maxNumber = numberText.toIntOrNull()

                    if (maxNumber != null && maxNumber > 0) {
                        val randomNumber = (1..maxNumber).random()
                        // Actualiza el texto con el número aleatorio generado
                        setGeneratedNumber("Número Aleatorio: $randomNumber")
                    } 
                },
                modifier = Modifier.padding(16.dp)
            ) {
                Text("Generar número aleatorio")
            }

            Text(
                text = generatedNumber,
                modifier = Modifier.padding(16.dp)
            )
        }
    }
}

package com.example.myapplication

import android.os.Bundle

import androidx.activity.ComponentActivity

import androidx.activity.compose.setContent

import androidx.compose.foundation.layout.Column

import androidx.compose.foundation.layout.fillMaxSize

import androidx.compose.foundation.layout.padding

import androidx.compose.material3.Button

import androidx.compose.material3.ExperimentalMaterial3Api

import androidx.compose.material3.MaterialTheme

import androidx.compose.material3.Surface

import androidx.compose.material3.Text

import androidx.compose.material3.TextField

import androidx.compose.runtime.Composable

import androidx.compose.runtime.mutableStateOf

import androidx.compose.runtime.remember

import androidx.compose.ui.Alignment

import androidx.compose.ui.Modifier

import androidx.compose.ui.tooling.preview.Preview

import androidx.compose.ui.unit.dp

class MainActivity : ComponentActivity() {

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContent {

MyApp()

}

@OptIn(ExperimentalMaterial3Api::class)

@Composable

fun MyApp() {

Surface(

modifier = Modifier.fillMaxSize(),

color = MaterialTheme.colorScheme.background

) {

Column(

modifier = Modifier.fillMaxSize(),

horizontalAlignment = Alignment.CenterHorizontally,

verticalArrangement = androidx.compose.foundation.layout.Arrangement.Center

) {

val (numberText, setNumberText) = remember { mutableStateOf("") }

val (generatedNumber, setGeneratedNumber) = remember { mutableStateOf("") }

TextField(

value = numberText,

onValueChange = {

// Mantén el número introducido en la caja de texto

setNumberText(it.takeIf { it.all { char -> char.isDigit() } } ?: "")

label = { Text("Introduce un número") },

modifier = Modifier.padding(16.dp)

)

Button(

onClick = {

val maxNumber = numberText.toIntOrNull()

if (maxNumber != null && maxNumber > 0) {

val randomNumber = (1..maxNumber).random()

// Actualiza el texto con el número aleatorio generado

setGeneratedNumber("Número Aleatorio: $randomNumber")

}

modifier = Modifier.padding(16.dp)

) {

Text("Generar número aleatorio")

}

Text(

text = generatedNumber,

modifier = Modifier.padding(16.dp)

)

}

Publicado el día 2 de diciembre de 2023

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Android, Kotlin

Generar un número aleatorio pulsando un botón en Android Studio (Kotlin, Android)

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