Refrain from calculating hardcoded dimensions

mobile/src/main/java/com/github/shadowsocks/acl/CustomRulesFragment.kt

@@ -48,7 +48,6 @@ import com.github.shadowsocks.ToolbarFragment
 import com.github.shadowsocks.bg.BaseService
 import com.github.shadowsocks.utils.Subnet
 import com.github.shadowsocks.utils.asIterable
-import com.github.shadowsocks.utils.dp
 import com.github.shadowsocks.widget.UndoSnackbarManager
 import java.net.IDN
 import java.net.URL
@@ -78,7 +77,8 @@ class CustomRulesFragment : ToolbarFragment(), Toolbar.OnMenuItemClickListener {
 
         init {
             view.setPaddingRelative(view.paddingStart, view.paddingTop,
-                    Math.max(view.paddingEnd, 20f.dp().toInt()), view.paddingBottom)
+                    Math.max(view.paddingEnd, resources.getDimensionPixelSize(R.dimen.fastscroll__bubble_corner)),
+                    view.paddingBottom)
             view.setOnClickListener(this)
             view.setOnLongClickListener(this)
             view.setBackgroundResource(R.drawable.background_selectable)

mobile/src/main/java/com/github/shadowsocks/utils/Utils.kt

@@ -53,8 +53,6 @@ fun thread(start: Boolean = true, isDaemon: Boolean = false, contextClassLoader:
 val URLConnection.responseLength: Long
     get() = if (Build.VERSION.SDK_INT >= 24) contentLengthLong else contentLength.toLong()
 
-fun Float.dp(): Float = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, this, app.resources.displayMetrics)
-
 /**
  * Based on: https://stackoverflow.com/a/15656428/2245107
  */