fix two potential FCs

src/main/scala/com/github/shadowsocks/AppManager.scala

@@ -61,6 +61,7 @@ import com.nostra13.universalimageloader.core.{DisplayImageOptions, ImageLoader,
 import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer
 import com.github.shadowsocks.utils.{Utils, Scheme, Key}
 
+import scala.concurrent.ops._
 import scala.language.implicitConversions
 
 case class ProxiedApp(uid: Int, name: String, packageName: String, var proxied: Boolean)
@@ -245,18 +246,17 @@ class AppManager extends Activity with OnCheckedChangeListener with OnClickListe
       }
     })
     bypassSwitch.setChecked(prefs.getBoolean(Key.isBypassApps, false))
+
+    appListView = findViewById(R.id.applistview).asInstanceOf[ListView]
   }
 
   protected override def onResume() {
     super.onResume()
-    new Thread {
-      override def run() {
-        handler.post(loadStartRunnable)
-        appListView = findViewById(R.id.applistview).asInstanceOf[ListView]
-        if (!appsLoaded) loadApps()
-        handler.post(loadFinishRunnable)
-      }
-    }.start()
+    spawn {
+      handler.post(loadStartRunnable)
+      if (!appsLoaded) loadApps()
+      handler.post(loadFinishRunnable)
+    }
   }
 
   def saveAppSettings(context: Context) {

src/main/scala/com/github/shadowsocks/utils/Utils.scala

@@ -181,20 +181,24 @@ object Utils {
   }
 
   def resolve(host: String, addrType: Int): Option[String] = {
-    val lookup = new Lookup(host, addrType)
-    val resolver = new SimpleResolver("114.114.114.114")
-    resolver.setTimeout(5)
-    lookup.setResolver(resolver)
-    val result = lookup.run()
-    if (result == null) return None
-    val records = scala.util.Random.shuffle(result.toList)
-    for (r <- records) {
-      addrType match {
-        case Type.A =>
-          return Some(r.asInstanceOf[ARecord].getAddress.getHostAddress)
-        case Type.AAAA =>
-          return Some(r.asInstanceOf[AAAARecord].getAddress.getHostAddress)
+    try {
+      val lookup = new Lookup(host, addrType)
+      val resolver = new SimpleResolver("114.114.114.114")
+      resolver.setTimeout(5)
+      lookup.setResolver(resolver)
+      val result = lookup.run()
+      if (result == null) return None
+      val records = scala.util.Random.shuffle(result.toList)
+      for (r <- records) {
+        addrType match {
+          case Type.A =>
+            return Some(r.asInstanceOf[ARecord].getAddress.getHostAddress)
+          case Type.AAAA =>
+            return Some(r.asInstanceOf[AAAARecord].getAddress.getHostAddress)
+        }
       }
+    } catch {
+      case e: Exception => None
     }
     None
   }