dandvl

import android.util.Log
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.Scaffold
import androidx.compose.material.SnackbarResult
import androidx.compose.material.rememberScaffoldState
import androidx.compose.material3.Button
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.rememberCoroutineScope

dandvl

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.async
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlin.system.measureTimeMillis

class MainActivity : AppCompatActivity() {

dandvl

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlin.system.measureTimeMillis

class MainActivity : AppCompatActivity() {

dandvl

class MainActivity : AppCompatActivity() {

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

        val constraints = Constraints.Builder()
            .setRequiredNetworkType(NetworkType.CONNECTED)
            .setRequiresStorageNotLow(true)
            .build()

dandvl

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import androidx.work.*

class MainActivity : AppCompatActivity() {

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

dandvl

fun main() = runBlocking(Dispatchers.Default) { 

    val j = GlobalScope.launch {
        val m = measureTimeMillis {
            val answer1 = async { networkCall() }
            val answer2 = async { networkCall2() }
            println(answer1.await())
            println(answer2.await())
        }
        println("m: $m")

dandvl

In the begging android had the Action Bar as an App bar (that's why remove on the manifest) but more features were added to the Toolbar. available now in this library. 'androidx.appcompat:appcompat:1.4.1'

dandvl

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.view.View
import com.google.android.material.snackbar.Snackbar

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

dandvl

class MyViewModel {
  val result = liveData {
    emit(doComputation)
  }
}

//implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.3.0"

dandvl

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

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General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules