MainActivity.kt

package com.example.poftabuna

import android.R
import android.content.Intent
import android.graphics.Color
import android.graphics.drawable.ColorDrawable
import android.os.Bundle
import android.text.Layout
import android.view.View
import android.view.ViewGroup
import android.widget.LinearLayout
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import kotlinx.android.synthetic.main.activity_main.*


class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }

    fun click_proteine(view: View)
    {
        text_proteine.setBackgroundColor(Color.WHITE);

        text_carbohidrati.setBackgroundColor(Color.BLACK);
        text_grasimi.setBackgroundColor(Color.BLACK);
        text_fructe.setBackgroundColor(Color.BLACK);

        val color = (text_cu.getBackground() as ColorDrawable).color
        if(color!=Color.BLACK) {
            text_cu.setBackgroundColor(Color.YELLOW);
        }

        val color2 = (text_fara.getBackground() as ColorDrawable).color
        if(color2!=Color.BLACK) {
            text_cu.setBackgroundColor(Color.YELLOW);
        }

        text_fara.setBackgroundColor(Color.GREEN);
        text_iritanti.setBackgroundColor(Color.GREEN);

        layout_proteine.removeAllViews()

    }
    fun restart(view: View)
    {
        intent = Intent(this, MainActivity::class.java)
        startActivity(intent)
    }



}