大约有 366 项符合查询结果（耗时：0.0259秒） [XML]
How to set OnClickListener on a RadioButton in Android?
... question isn't specific to Java, I would like to add how you can do it in Kotlin:
radio_group_id.setOnCheckedChangeListener({ radioGroup, optionId -> {
when (optionId) {
R.id.radio_button_1 -> {
// do something when radio button 1 is selected
}...
Android Use Done button on Keyboard to click button
...
Kotlin Solution
The base way to handle the done action in Kotlin is:
edittext.setOnEditorActionListener { _, actionId, _ ->
if (actionId == EditorInfo.IME_ACTION_DONE) {
// Call your code here
true
...
How set the android:gravity to TextView from Java side in Android
...
labelTV.setGravity(Gravity.CENTER | Gravity.BOTTOM);
Kotlin version (thanks to Thommy)
labelTV.gravity = Gravity.CENTER_HORIZONTAL or Gravity.BOTTOM
Also, are you talking about gravity or about layout_gravity? The latter won't work in a RelativeLayout.
...
Android: ScrollView force to bottom
...ew.FOCUS_DOWN) also should work.
Put this in a scroll.Post(Runnable run)
Kotlin Code
scrollView.post {
scrollView.fullScroll(View.FOCUS_DOWN)
}
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In Android EditText, how to force writing uppercase?
...
Or in Kotlin just editText.filters = editText.filters + InputFilter.AllCaps()
– Ilia Kurtov
Sep 27 '18 at 16:35
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Android: How to put an Enum in a Bundle?
...
I use kotlin.
companion object {
enum class Mode {
MODE_REFERENCE,
MODE_DOWNLOAD
}
}
then put into Intent:
intent.putExtra(KEY_MODE, Mode.MODE_DOWNLOAD.name)
when you net to get value:...
How to determine MIME type of file in android?
...lowercase!
Update (19.03.2018)
Bonus: Above methods as a less verbose Kotlin extension function:
fun File.getMimeType(fallback: String = "image/*"): String {
return MimeTypeMap.getFileExtensionFromUrl(toString())
?.run { MimeTypeMap.getSingleton().getMimeTypeFromExtension(toLow...
How to get hosting Activity from a view?
...
I like this solution written in Kotlin
tailrec fun Context?.getActivity(): Activity? = when (this) {
is Activity -> this
else -> (this as? ContextWrapper)?.baseContext?.getActivity()
}
Usage in View class
context.getActivity()
Decompiled cod...
Pick a random value from an enum?
...
Simple Kotlin Solution
MyEnum.values().random()
random() is a default extension function included in base Kotlin on the Collection object. Kotlin Documentation Link
If you'd like to simplify it with an extension function, try th...
Gson - convert from Json to a typed ArrayList
...arameters, such as Class<?> or List<? extends CharSequence>.
Kotlin:
If you need to do it in Kotlin you can do it like this:
val myType = object : TypeToken<List<JsonLong>>() {}.type
val logs = gson.fromJson<List<JsonLong>>(br, myType)
Or you can see this a...