有没有办法以编程方式获得Android Q System的颜色重音

Question

As you noticed, Google has included a way to select a system wide color accent in the Android settings:

I first thought this would be impossible to use in my app, but Gboard succeed to use it to theme UI elements accordingly, as we can see in this news: https://9to5google.com/2019/05/08/android-q-gboard-accent-color/

I was then wondering if this is a public API, or of there is a way to get it from one way or another.

Thanks for any idea.

Answer 1

You have to use Theme.DeviceDefault theme as source which independent from AppCompat world.

I tested the follow snippet and it works fine when I changed the accent color on Android Q:

@ColorInt
fun getDeviceAccentColor(context: Context) : Int {
    val value = TypedValue()
    val ctx = ContextThemeWrapper(context, android.R.style.Theme_DeviceDefault)
    ctx.theme.resolveAttribute(android.R.attr.colorAccent, value, true)
    return value.data
}