, , , :
layout_width layout_height 0dp .
<ImageView
android:layout_width="0dp"
android:layout_height="0dp" />
minWidth/minHeight .
<ImageView
android:layout_width="0dp"
android:layout_height="0dp"
android:minWidth="@{controller.getDeviceWidthDP()}"
android:minHeight="@{controller.getDeviceWidthDP()}" />
BindingAdapter , Kotlin.
object ViewBindings{
@JvmStatic
@BindingAdapter("android:minWidth")
fun setLayoutWidth(view: View, width: Float) {
val layoutParams = view.layoutParams
layoutParams.width = (width * view.resources.displayMetrics.density).toInt()
view.layoutParams = layoutParams
view.invalidate()
}
@JvmStatic
@BindingAdapter("android:minHeight")
fun setLayoutHeight(view: View, height: Float) {
val layoutParams = view.layoutParams
layoutParams.height = (height * view.resources.displayMetrics.density).toInt()
view.layoutParams = layoutParams
view.invalidate()
}
}
, .
fun Context.getDeviceDimensions(): Pair<Float, Float> {
var widthHeight = Pair(0.0F, 0.0F)
resources.displayMetrics.let {
val dpHeight = it.heightPixels / it.density
val dpWidth = it.widthPixels / it.density
widthHeight = Pair(dpWidth, dpHeight)
}
return widthHeight
}
<data>, .
class SomeController(val someFragment: SomeFragment){
fun getDeviceWidthDP(): Float{
val width = someFragment.context.getDeviceDimensions().first
return width
}
}