Fix id resolution. Fix patch and helper

Author: bootstraponline

android_tests/lib/android/specs/android/patch.rb

@@ -1,9 +1,9 @@
 describe 'android/patch.rb' do
   t 'type' do
     # nav to textfield
-    text('app').click
-    text('search').click
-    text('invoke').click
+    find('app').click
+    find('search').click
+    find('invoke').click
 
     ele = first_textfield
     ele.type 'ok'

lib/appium_lib/android/helper.rb

@@ -106,7 +106,9 @@ def current_app
     # @return [Element]
     def id id
       value = resolve_id id
-      raise "Invalid id `#{id}`" unless value
+      # If the id doesn't resolve in strings.xml then use it as is
+      # It's probably a resource id which won't be in strings.xml
+      value = id unless value
       exact    = string_visible_exact '*', value
       contains = string_visible_contains '*', value
       xpath "#{exact} | #{contains}"