Some bugfixes for new UI

mobile/src/main/scala/com/github/shadowsocks/ProfileConfigFragment.scala

@@ -105,6 +105,7 @@ class ProfileConfigFragment extends PreferenceFragment with OnMenuItemClickListe
     pluginConfiguration = new PluginConfiguration(app.settings.getString(Key.plugin, null))
     plugin.setValue(pluginConfiguration.selected)
     plugin.checkSummary()
+    pluginConfigure.setEnabled(!TextUtils.isEmpty(pluginConfiguration.selected))
     pluginConfigure.setText(pluginConfiguration.selectedOptions.toString)
   }
 

mobile/src/main/scala/com/github/shadowsocks/plugin/PluginConfiguration.scala

@@ -10,7 +10,7 @@ import scala.collection.mutable
   */
 class PluginConfiguration(val pluginsOptions: Map[String, PluginOptions], val selected: String) {
   private def this(plugins: Array[PluginOptions]) =
-    this(plugins.map(opt => opt.id -> opt).toMap, if (plugins.isEmpty) "" else plugins(0).id)
+    this(plugins.filter(_.id.nonEmpty).map(opt => opt.id -> opt).toMap, if (plugins.isEmpty) "" else plugins(0).id)
   def this(plugin: String) = this(if (plugin == null) Array[PluginOptions]() else plugin.split("\n").map {
     case line if line.startsWith("kcptun ") =>
       val opt = new PluginOptions()
@@ -30,7 +30,8 @@ class PluginConfiguration(val pluginsOptions: Map[String, PluginOptions], val se
     case line => new PluginOptions(line)
   })
 
-  def selectedOptions: PluginOptions = pluginsOptions(selected)
+  def getOptions(id: String): PluginOptions = if (id.isEmpty) new PluginOptions() else pluginsOptions(id)
+  def selectedOptions: PluginOptions = getOptions(selected)
 
   override def toString: String = {
     val result = new mutable.ListBuffer[PluginOptions]()

mobile/src/main/scala/com/github/shadowsocks/preference/BottomSheetPreferenceDialogFragment.scala

@@ -34,7 +34,7 @@ final class BottomSheetPreferenceDialogFragment extends PreferenceDialogFragment
     dialog
   }
 
-  def onDialogClosed(positiveResult: Boolean): Unit = if (clickedIndex >= 0) {
+  def onDialogClosed(positiveResult: Boolean): Unit = if (clickedIndex >= 0 && clickedIndex != index) {
     val value = preference.getEntryValues()(clickedIndex).toString
     if (preference.callChangeListener(value)) preference.setValue(value)
   }