Handle malformed requests in TaskerActivity

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

@@ -82,6 +82,11 @@ class TaskerActivity extends AppCompatActivity {
 
   override def onCreate(savedInstanceState: Bundle) {
     super.onCreate(savedInstanceState)
+    try taskerOption = TaskerSettings.fromIntent(getIntent) catch {
+      case _: Exception =>
+        finish()
+        return
+    }
     setContentView(R.layout.layout_tasker)
 
     val toolbar = findViewById(R.id.toolbar).asInstanceOf[Toolbar]
@@ -89,7 +94,6 @@ class TaskerActivity extends AppCompatActivity {
     toolbar.setNavigationIcon(R.drawable.ic_navigation_close)
     toolbar.setNavigationOnClickListener(_ => finish())
 
-    taskerOption = TaskerSettings.fromIntent(getIntent)
     switch = findViewById(R.id.serviceSwitch).asInstanceOf[Switch]
     switch.setChecked(taskerOption.switchOn)
     val profilesList = findViewById(R.id.list).asInstanceOf[RecyclerView]

mobile/src/main/scala/com/github/shadowsocks/utils/TaskerSettings.scala

@@ -30,8 +30,7 @@ object TaskerSettings {
   private val KEY_SWITCH_ON = "switch_on"
   private val KEY_PROFILE_ID = "profile_id"
 
-  def fromIntent(intent: Intent) = new TaskerSettings(if (intent.hasExtra(ApiIntent.EXTRA_BUNDLE))
-    intent.getBundleExtra(ApiIntent.EXTRA_BUNDLE) else Bundle.EMPTY)
+  def fromIntent(intent: Intent) = new TaskerSettings(intent.getBundleExtra(ApiIntent.EXTRA_BUNDLE))
 }
 
 class TaskerSettings(bundle: Bundle) {