✈️

JongHun Lee ChuuMong

✈️

ChuuMong / MainActivity.kt

Created March 16, 2023 03:21

Webview Disable Horizontal Scroll

	webview.setOnTouchListener(object: View.OnTouchListener {
	private var touchDownX: Float = -1f

	override fun onTouch(v: View, event: MotionEvent): Boolean {

	if (event.pointerCount > 1) {
	return true
	}

	when (event.action) {

ChuuMong / select_image_position.java

Created December 20, 2022 05:57

select_image_position.java

	Cursor c = null;
	SubwayDatabaseHelper myDbHelper = new SubwayDatabaseHelper(MainActivity.this); // Reading SQLite database.
	try {
	myDbHelper.createDataBase();
	} catch (IOException ioe) {
	throw new Error("Unable to create database");
	}
	try {
	myDbHelper.openDataBase();
	} catch (SQLException sqle) {

ChuuMong / PaginationScrollListener.kt

Created December 6, 2022 01:42

	abstract class PaginationScrollListener(private val layoutManager: LinearLayoutManager) :
	RecyclerView.OnScrollListener() {

	override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
	super.onScrolled(recyclerView, dx, dy)
	val visibleItemCount: Int = layoutManager.childCount
	val totalItemCount: Int = layoutManager.itemCount
	val firstVisibleItemPosition: Int = layoutManager.findFirstVisibleItemPosition()
	if (!isLoading() && !isLastPage()) {
	if (visibleItemCount + firstVisibleItemPosition >= totalItemCount

ChuuMong / printing_directory_tree.kt

Created March 30, 2022 07:49

printing directory tree

	private fun printDirectoryTree(folder: File): String {
	if (!folder.isDirectory) {
	return String.empty()
	}
	val indent = 0
	val sb = StringBuilder()
	printDirectoryTree(folder, indent, sb)

	return sb.toString()
	}

ChuuMong / EventBus.kt

Last active October 15, 2021 00:08

Flow EventBus

	/**
	* ```
	* // To post an event:
	* EventBus.send(SomeEvent())
	*
	* // To subscribe to an event:
	* EventBus.register(this, SomeEvent::class) { event ->
	* }
	*
	* // To cancel a subscriber:

ChuuMong / layout_test.xml

Last active October 7, 2021 04:28

ConstraintLayout 중앙 TextView 가변 제약 처리

	<androidx.constraintlayout.widget.ConstraintLayout
	android:layout_width="match_parent"
	android:layout_height="wrap_content">

	<TextView
	android:id="@+id/tv_label_1"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="Label 1"
	app:layout_constraintStart_toStartOf="parent"

ChuuMong / EditTextEnglishKoreanFilter.kt

Created June 17, 2020 04:34

EditText 영문, 한글(천지인 키보드 대응) 필터

	et_name.filters = arrayOf(InputFilter { source, start, end, dest, dstart, dend ->
	val pattern = Pattern.compile("^[a-zA-Zㄱ-ㅎ가-힣ㅏ-ㅣ\\u318D\\u119E\\u11A2\\u2022\\u2025a\\u00B7\\uFE55]+$")
	if (pattern.matcher(source).matches()) {
	source
	} else {
	""
	}
	})

ChuuMong / EventBus.kt

Last active January 6, 2021 14:16

Coroutine based event bus


	/**
	* ```
	* // To post an event:
	* EventBus.send(SomeEvent())
	*
	* // To subscribe to an event:
	* EventBus.register(this, Dispatchers.Main, SomeEvent::class) { event ->
	* }
	*

ChuuMong / CustomFragment.kt

Created April 13, 2020 07:13

BackPress handling in Android Fragments

	override fun onCreate(savedInstanceState: Bundle?) {
	super.onCreate(savedInstanceState)
	activity?.onBackPressedDispatcher?.addCallback(this, object : OnBackPressedCallback(true) {
	override fun handleOnBackPressed() {
	// in here you can do logic when backPress is clicked
	}
	})
	}

ChuuMong / CurrencyCrawling.kt

Last active February 24, 2020 02:10

	import com.gargoylesoftware.htmlunit.WebClient
	import com.gargoylesoftware.htmlunit.html.HtmlDivision
	import com.gargoylesoftware.htmlunit.html.HtmlPage
	import org.jsoup.Jsoup
	import kotlin.system.measureTimeMillis

	data class Currency(val code: String, val engName: String)

	fun main() {
	val currencies = mutableListOf<Currency>()