Butterknife: @BindColor fields must not be private or static (Kotlin)

[Jawnnypoo]

Hey there,

This is an issue that I see when using butterknife with Kotlin. It occurs with the following:

//These are broken, I believe so is @BindFloat
@BindInt(R.integer.some_int) var someInt: Int = 0
@BindDimen(R.dimen.some_dimen) var someDimen: Int = 0
@BindColor(R.color.colorPrimary) var colorPrimary: Int = 0
@BindBool(R.bool.some_bool) var someBool: Boolean = false

Here is a project that produces these errors
https://github.com/Jawnnypoo/ButterknifeBindFailure

[diegomontoya]

We are also having this issue. With latest Android Studio 3.0 preview and latest butterknife release

[Jawnnypoo]

Good to know. Just to confirm, I tested this with a few ButterKnife versions including 8.0.0 and still had the error, so I think this is independent of the version of ButterKnife (past 8.0.0 when this feature was added) and Android Studio.

[Ilya-Gh]

@Jawnnypoo, The issue is the same as described here.

That's a property whose backing field is private. Add @JvmField to generate a public field instead.

[Jawnnypoo]

Ahhh good stuff @Ilya-Gh thanks. Hopefully others will find this issue when they run into this then! 😄

[pedrovarela86]

I defined my var with _lateinit_ and they work..

[erikhuizinga]

Either @JvmField or lateinit work for me, but YMMV if the property must not be nullable.

[theapache64]

I replaced internal var (\w+): (\w+)(\? = null) with lateinit var $1: $2 and it worked xD

[SwishHoopDev]

@BindView(R.id.myView)
@JvmField
var myView: View? = null

or

@BindView(R.id.myView)
lateinit var myView: View