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How to programmatically set drawableLeft on Android button?
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• Kotlin Version
Use below snippet to add a drawable left to the button:
val drawable = ContextCompat.getDrawable(context, R.drawable.ic_favorite_white_16dp)
button.setCompoundDrawablesWithIntrinsicBounds(drawable, null, null...
What is the default text size on Android?
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This will return default size of text on button in pixels.
Kotlin
val size = Button(this).textSize
Java
float size = new Button(this).getTextSize();
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Set color of TextView span in Android
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Kotlin + Spannable String solution would look like this stackoverflow.com/questions/4032676/…
– Dmitrii Leonov
Jan 1 at 4:29
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How to remove the last character from a string?
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No it isn't, because "use Java" is a terrible answer to a Kotlin question.
– Mikkel Løkke
Indexes of all occurrences of character in a string
...llectors.toList()) // collect found indices into a list
);
Here's the Kotlin Solution to add this logic as a new a new methods into CharSequence API using extension method:
// Extension method
fun CharSequence.indicesOf(input: String): List<Int> =
Regex(Pattern.quote(input)) // build...
How to set layout_gravity programmatically?
...t = 1.0f;
params.gravity = Gravity.TOP;
button.setLayoutParams(params);
Kotlin
val params = LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT
).apply {
weight = 1.0f
gravity = Gravity.TOP
}
For gravity values and how to se...
开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...g/OTP 编写，这是一种用于构建大规模可扩展软实时系统的编程语言。与 Mosquitto 不同，EMQX 在设计之初即采用了分布式集群架构，可以轻松实现弹性水平扩展，从而稳定承载大规模的 MQTT 客户端接入。最新版本 EMQX 5.0 可在 23 个节...
converting Java bitmap to byte array
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Here is bitmap extension .convertToByteArray wrote in Kotlin.
/**
* Convert bitmap to byte array using ByteBuffer.
*/
fun Bitmap.convertToByteArray(): ByteArray {
//minimum number of bytes that can be used to store this bitmap's pixels
val size = this.byteCount
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Programmatically update widget from activity/service/receiver
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Phaethon's accepted solution in Kotlin:
val intent = Intent(this, MyAppWidgetProvider::class.java)
intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
val ids = AppWidgetManager.getInstance(application).getAppWidgetIds(ComponentName(getApp...
Get root view from current activity
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In Kotlin we can do it a little shorter:
val rootView = window.decorView.rootView
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