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Kotlin Extensions
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| fun Activity.drawBehindStatusBar() { | |
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { | |
| window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or | |
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | |
| } | |
| } |
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| fun Context.color(@ColorRes colorRes: Int): Int | |
| = ContextCompat.getColor(this, colorRes) | |
| fun Context.drawable(@DrawableRes drawableRes: Int): Drawable? | |
| = AppCompatResources.getDrawable(this, drawableRes) | |
| fun Context.customAnimation(@AnimRes enterResId: Int, @AnimRes exitResId: Int): Bundle | |
| = ActivityOptionsCompat.makeCustomAnimation(this, enterResId, exitResId).toBundle(); | |
| fun RecyclerView.ViewHolder.string(@StringRes stringRes: Int, vararg formatArgs: Any): String | |
| = itemView.context.getString(stringRes, *formatArgs) | |
| fun RecyclerView.ViewHolder.color(@ColorRes colorRes: Int): Int | |
| = ContextCompat.getColor(itemView.context, colorRes) | |
| fun RecyclerView.ViewHolder.drawable(@DrawableRes drawableRes: Int): Drawable? | |
| = AppCompatResources.getDrawable(itemView.context, drawableRes) |
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| // from Kotlin for Android Developers (the book) | |
| object DelegatesExt { | |
| fun <T> preference(context: Context, name: String, default: T) = Preferences(context, name, default) | |
| } | |
| class Preferences<T>(context: Context, val name: String, val default: T) { | |
| val prefs: SharedPreferences by lazy { context.getSharedPreferences("default", Context.MODE_PRIVATE) } | |
| @Suppress("UNCHECKED_CAST") | |
| operator fun getValue(thisRef: Any?, property: KProperty<*>): T = with(prefs) { | |
| val res: Any = when (default) { | |
| is String -> getString(name, default) | |
| is Boolean -> getBoolean(name, default) | |
| is Int -> getInt(name, default) | |
| is Float -> getFloat(name, default) | |
| is Long -> getLong(name, default) | |
| else -> throw IllegalArgumentException("This type can't be saved into Preferences") | |
| } | |
| res as T | |
| } | |
| @SuppressLint("CommitPrefEdits") | |
| operator fun setValue(thisRef: Any?, property: KProperty<*>, value: T) = with(prefs.edit()) { | |
| when (value) { | |
| is String -> putString(name, value) | |
| is Boolean -> putBoolean(name, value) | |
| is Int -> putInt(name, value) | |
| is Float -> putFloat(name, value) | |
| is Long -> putLong(name, value) | |
| else -> throw IllegalArgumentException("This type can't be saved into Preferences") | |
| }.apply() | |
| } | |
| } |
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| fun String.isNumeric(): Boolean = try { | |
| this.toLong() | |
| true | |
| } catch(e: NumberFormatException) { | |
| false | |
| } | |
| fun String.asHtml(): Spanned { | |
| return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { | |
| Html.fromHtml(this, Html.FROM_HTML_MODE_COMPACT) | |
| } else { | |
| Html.fromHtml(this) | |
| } | |
| } | |
| fun Long.toRupiah(): String { | |
| val formatter = NumberFormat.getCurrencyInstance(Locale("id")) as DecimalFormat | |
| with(formatter) { | |
| decimalFormatSymbols = decimalFormatSymbols.apply { currencySymbol = "Rp " } | |
| maximumFractionDigits = 0 | |
| } | |
| return formatter.format(this) | |
| } | |
| // use kotlin's coerceIn function instead | |
| inline fun Int.clampWithin(range: () -> Pair<Int, Int>): Int { | |
| val (min, max) = range() | |
| return Math.min(Math.max(this, min), max) | |
| } |
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| inline fun CompositeDisposable.switch(disposable: Disposable?, f: () -> Disposable): Disposable { | |
| disposable?.let { this.remove(it) } | |
| return f().apply { this@switch += this } | |
| } |
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| inline fun View.visibleIf(block: () -> Boolean) { | |
| this.visibility = if (block()) View.VISIBLE else View.GONE | |
| } | |
| fun View.closeKeyboard() { | |
| val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager | |
| imm.hideSoftInputFromWindow(windowToken, 0) | |
| } | |
| val View.transition: Pair<View, String> | |
| @RequiresApi(Build.VERSION_CODES.LOLLIPOP) | |
| get()= Pair(this, transitionName) | |
| fun ViewGroup.inflate(@LayoutRes layoutRes: Int, attachToRoot: Boolean = false): View { | |
| return LayoutInflater.from(context).inflate(layoutRes, this, attachToRoot) | |
| } |
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