CodeDepthActivity.kt

package com.leonidivankin.draftandroid.articles.benchmark

import android.graphics.Color
import android.os.Bundle
import android.util.Log
import android.widget.FrameLayout
import androidx.appcompat.app.AppCompatActivity


class CodeDepthActivity : AppCompatActivity() {
    var time = 0L

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        title = "code, depth"
        val myDensity = 3
        val colors = listOf(
            "#F44336",
            "#E91E63",
            "#9C27B0",
            "#673AB7",
            "#3F51B5",
            "#2196F3",
            "#03A9F4",
            "#00BCD4",
            "#009688",
            "#4CAF50",
            "#8BC34A",
            "#CDDC39",
            "#FFEB3B",
            "#FFC107",
            "#FF9800",
            "#FF5722",
        )
            .map { Color.parseColor(it) }

        time = System.currentTimeMillis()

        val head = FrameLayout(this)
        head.setBackgroundColor(colors[0])
        head.setPadding(4 * myDensity, 4 * myDensity, 4 * myDensity, 4 * myDensity)
        var tail = head
        for (i in 1..48) {
            val layout = FrameLayout(this)
            layout.setBackgroundColor(colors[i % colors.size])
            layout.setPadding(4 * myDensity, 4 * myDensity, 4 * myDensity, 4 * myDensity)
            tail.addView(layout)
            tail = layout
        }

        setContentView(head)
    }

    override fun onResume() {
        super.onResume()
        Log.d("Benchmark", "CodeDepthActivity onResume: ${System.currentTimeMillis() - time}")
    }

    override fun onWindowFocusChanged(hasFocus: Boolean) {
        super.onWindowFocusChanged(hasFocus)
        if (hasFocus) {
            Log.d(
                "Benchmark",
                "CodeDepthActivity onWindowFocusChanged: ${System.currentTimeMillis() - time}"
            )
        }
    }
}