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Specifying an Index (Non-Unique Key) Using JPA
...orm.annot.Column, index and uniqueIndex properties;
requery (GitHub. Java, Kotlin, Android): Annotation io.requery.Index;
Exposed (Kotlin SQL Library): org.jetbrains.exposed.sql.Index, org.jetbrains.exposed.sql.Table#index(). Example:
object Persons : IdTable() {
val code = varchar("code", 50...
Why doesn't RecyclerView have onItemClickListener()?
...by making use of RecyclerView.OnChildAttachStateChangeListener.
Edit 2019: kotlin version by me, java one, from Hugo Visser, kept below
Kotlin / Java
Create a file values/ids.xml and put this in it:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<item name="item_click_support"...
Convert String to Uri
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If you are using Kotlin and Kotlin android extensions, then there is a beautiful way of doing this.
val uri = myUriString.toUri()
To add Kotlin extensions (KTX) to your project add the following to your app module's build.gradle
reposit...
runOnUiThread in fragment
...
Use a Kotlin extension function
fun Fragment?.runOnUiThread(action: () -> Unit) {
this ?: return
if (!isAdded) return // Fragment not attached to an Activity
activity?.runOnUiThread(action)
}
Then, in any Fragment...
Mock static methods from multiple class using PowerMock
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in kotlin @PrepareForTest(Class1::class, Class2::class))
– Ryhan
Sep 13 '17 at 20:40
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How to use stringstream to separate comma separated strings [duplicate]
...a good practice to have a method outside of a class? Modern languages like Kotlin don't even allow static methods.
– Dmitry Gusarov
Oct 16 '19 at 2:00
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Get Bitmap attached to ImageView
...
drawingCache is deprecated in Kotlin
– Raju yourPepe
Oct 5 '18 at 13:38
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@UniqueConstraint annotation in Java
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Note: In Kotlin the syntax for declaring the arrays in annotations uses arrayOf(...) instead of {...}
@Entity
@Table(uniqueConstraints=arrayOf(UniqueConstraint(columnNames=arrayOf("book", "chapter_number"))))
class Chapter(@ManyToOne...
Android: checkbox listener
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for kotlin satView.setOnCheckedChangeListener { buttonView, _ -> if (buttonView.isChecked) { // perform action } else { // perform action } }
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Android - How to get application name? (Not package name)
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In Kotlin, use the following codes to get Application Name:
// Get App Name
var appName: String = ""
val applicationInfo = this.getApplicationInfo()
val stringId = applicationInfo.labelRes
...