IhwanID

void main() {
 isOddOrEven(18);
}

void isOddOrEven(int number){
  if(number % 2 == 0){
    print("$number is even");
  }else{
    print("$number is odd");
  }

IhwanID

void main() {
  List<int> primeNumber = [2,3,5,7];
  primeNumber.addAll([11, 13, 17, 19]);
  primeNumber.add(23);
  print(primeNumber);
  
  //map
  var person = <String, dynamic>{
    'name' : 'Dewi',
    'age' : 17,

IhwanID

void main() {
  final person = Person(name: 'Arin', height: 160.0, weight: 55.0);
  print(person.bmi);
}

mixin BMI{
  double calculate(double height, double weight){
    return weight / (height * height);
  }
}

IhwanID

import 'dart:math';

void main() {

  final square = Square(side: 2.0);
  print(square.area);
  final circle = Circle(radius:14.0);
  printArea(circle);
}

IhwanID

package com.example.myapplication

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.content.Intent

class SplashActivity : AppCompatActivity() {

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

IhwanID

Keybase proof

I hereby claim:

• I am ihwanid on github.
• I am ihwanid (https://keybase.io/ihwanid) on keybase.
• I have a public key ASC2CF9mXFR2wuDupH3cLmZ4HmUcSTM9RHeMDfrgdOWTYAo

To claim this, I am signing this object:

IhwanID

try {
                    val sendIntent = Intent().apply {
                        action = Intent.ACTION_SEND
                        putExtra(Intent.EXTRA_TEXT, "Hello Swapz")
                        putExtra("jid", "${data.phone}@s.whatsapp.net")
                        type = "text/plain"
                        setPackage("com.whatsapp")
                    }
                    startActivity(sendIntent)
                }catch (e: Exception){

IhwanID

Principle of Navigation (Android Architecture Component / Jetpack)

1. There's Always Starting Place
2. You can always go back
3. Up goes back (mostly)

IhwanID

// Hide the keyboard.
val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
imm.hideSoftInputFromWindow(view.windowToken, 0)

IhwanID

import android.graphics.Color
import android.graphics.drawable.ColorDrawable
import android.graphics.drawable.GradientDrawable
import android.graphics.drawable.ShapeDrawable
import android.os.Build
import android.text.Html
import android.view.View
import android.widget.ImageView
import android.widget.TextView
import androidx.cardview.widget.CardView