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| fun RecyclerView.setItemCount(
columns: Int,
rows: Int
) {
if (adapter != null && adapter is BaseListAdapter<*, *>) {
(adapter as BaseListAdapter<*, *>).width = width / columns
(adapter as BaseListAdapter<*, *>).height = height / rows
}
}
inline fun RecyclerView.waitForLayout(crossinline f: () -> Unit) = with(viewTreeObserver) {
addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
override fun onGlobalLayout() {
removeOnGlobalLayoutListener(this)
f()
}
})
}
inline fun RecyclerView.waitForLayout2(crossinline f: () -> Unit) {
viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
override fun onGlobalLayout() {
viewTreeObserver.removeOnGlobalLayoutListener(this)
f()
}
})
}
// 最终还是这个好用
inline fun RecyclerView.waitForLayout3(crossinline f: () -> Unit) {
viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
override fun onGlobalLayout() {
if (measuredWidth > 0 && measuredHeight > 0) {
viewTreeObserver.removeOnGlobalLayoutListener(this)
f()
if (adapter != null && adapter is BaseListAdapter<*, *>) {
(adapter as BaseListAdapter<*, *>).width = width / 10
(adapter as BaseListAdapter<*, *>).height = height / 1
(adapter as BaseListAdapter<*, *>).notifyDataSetChanged()
}
}
}
})
}
inline fun <T: View> T.afterMeasured(crossinline f: T.() -> Unit) {
viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
override fun onGlobalLayout() {
if (measuredWidth > 0 && measuredHeight > 0) {
viewTreeObserver.removeOnGlobalLayoutListener(this)
f()
}
}
})
}
|