Glide: GlideExtension in kotlin use of object or companion object ?

[XiaoQiWen]

use kotlin can't implement GlideExtension

[TWiStErRob]

Please provide a bit more info, neither of us are active Kotlin devs. Your code, the error message, versiobs., Grade setup.

[AllanWang]

From the documentation, glide extensions are annotated classes with annotated static methods. Since kotlin doesn't really have static methods, the generated api may not work.

I haven't tried the extension annotations, but in the case of kotlin, you can already make extension functions directly yourself.

Consider trying something along the lines of

fun RequestOptions.newFun() {
    //action here
}

Another example of an extension function is

fun <T> RequestBuilder<T>.withRoundIcon() = apply(RequestOptions().transform(CircleCrop()))

[XiaoQiWen]

@AllanWang Thank you ,This is a good way to achieve

[TWiStErRob]

how about https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.jvm/-jvm-static/index.html ?

[AllanWang]

That does exist but it needs to be wrapped in an object so I'm not sure how glide would deal with it. But again since kotlin supports extensions already you my as well just use that as opposed to generating the extension code

[stale[bot]]

This issue has been automatically marked as stale because it has not had activity in the last seven days. It will be closed if no further activity occurs within the next seven days. Thank you for your contributions.

[samuel22gj]

Inspired by @AllanWang . I wrote a sample to present how to use Kotlin Extension to achieve Glide v4 Extension.

fun <T> GlideRequest<T>.removePlaceholders(): GlideRequest<T> {
    val options = RequestOptions()
            .placeholder(android.R.color.transparent)
            .fallback(android.R.color.transparent)
            .error(android.R.color.transparent)
    return apply(options)
}

[stale[bot]]

This issue has been automatically marked as stale because it has not had activity in the last seven days. It will be closed if no further activity occurs within the next seven days. Thank you for your contributions.

[JasonHezz]

user JvmStatic

sample

@GlideExtension
object MyAppExtension {

  private val MINI_THUMB_SIZE = 100

  @GlideOption
  @JvmStatic
  fun miniThumb(options: RequestOptions) {
    options
        .fitCenter()
        .override(MINI_THUMB_SIZE)
  }
}