Automatická registrácia - AJUVA B.Bystrica

package com.example.pressurecalc import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val pInput = findViewById(R.id.inputPressure) val dInput = findViewById(R.id.inputDiameter) val sInput = findViewById(R.id.inputStress) val eInput = findViewById(R.id.inputEfficiency) val btn = findViewById(R.id.btnCalculate) val output = findViewById(R.id.outputThickness) btn.setOnClickListener { val p = pInput.text.toString().toDouble() * 0.1 // bar → MPa val D = dInput.text.toString().toDouble() / 1000 // mm → m val sigma = sInput.text.toString().toDouble() val eta = eInput.text.toString().toDouble() val t = (p * D) / (2 * sigma * eta - p) // základný vzorec output.text = "Hrúbka steny: ${(t * 1000).format(2)} mm" } } fun Double.format(digits: Int) = "%.${digits}f".format(this) }