ui: Use KiB instead of KB for free space

Fixes #19.

app-common/src/main/java/im/angry/openeuicc/ui/ProfileDownloadFragment.kt

@@ -5,7 +5,6 @@ import android.app.Dialog
 import android.content.DialogInterface
 import android.os.Bundle
 import android.text.Editable
-import android.text.format.Formatter
 import android.util.Log
 import android.view.*
 import android.widget.ProgressBar
@@ -131,7 +130,7 @@ class ProfileDownloadFragment : BaseMaterialDialogFragment(),
             // Fetch remaining NVRAM
             val str = channel.lpa.euiccInfo2?.freeNvram?.also {
                 freeNvram = it
-            }?.let { Formatter.formatShortFileSize(requireContext(), it.toLong()) }
+            }?.let { formatFreeSpace(it) }
 
             withContext(Dispatchers.Main) {
                 profileDownloadFreeSpace.text = getString(R.string.profile_download_free_space,

app-common/src/main/java/im/angry/openeuicc/util/StringUtils.kt

@@ -19,4 +19,12 @@ fun ByteArray.encodeHex(): String {
         sb.append(String.format("%02X", this[i]))
     }
     return sb.toString()
-}
+}
+
+fun formatFreeSpace(size: Int): String =
+    // SIM cards probably won't have much more space anytime soon.
+    if (size >= 1024) {
+        "%.2f KiB".format(size.toDouble() / 1024)
+    } else {
+        "$size B"
+    }