Fix #192

Add nil check

Fix spam in native context

/cc @DylanLacey

Called get_page on {"name"=>nil, "type"=>"UIAToolbar", "label"=>nil, "value"=>nil, "rect"=>{"origin"=>{"x"=>0, "y"=>568}, "size"=>{"width"=>320, "height"=>44}}, "dom"=>nil, "enabled"=>true, "valid"=>true, "visible"=>false, "children"=>[{"name"=>nil, "type"=>"UIAImage", "label"=>nil, "value"=>nil, "rect"=>{"origin"=>{"x"=>0, "y"=>567.5}, "size"=>{"width"=>320, "height"=>0.5}}, "dom"=>nil, "enabled"=>true, "valid"=>true, "visible"=>false, "children"=>[], "hint"=>nil}, {"name"=>nil, "type"=>"UIAImage", "label"=>nil, "value"=>nil, "rect"=>{"origin"=>{"x"=>0, "y"=>568}, "size"=>{"width"=>320, "height"=>44}}, "dom"=>nil, "enabled"=>true, "valid"=>true, "visible"=>false, "children"=>[], "hint"=>nil}], "hint"=>nil}
Called get_page on {"name"=>nil, "type"=>"UIAImage", "label"=>nil, "value"=>nil, "rect"=>{"origin"=>{"x"=>0, "y"=>567.5}, "size"=>{"width"=>320, "height"=>0.5}}, "dom"=>nil, "enabled"=>true, "valid"=>true, "visible"=>false, "children"=>[], "hint"=>nil}
Called get_page on {"name"=>nil, "type"=>"UIAImage", "label"=>nil, "value"=>nil, "rect"=>{"origin"=>{"x"=>0, "y"=>568}, "size"=>{"width"=>320, "height"=>44}}, "dom"=>nil, "enabled"=>true, "valid"=>true, "visible"=>false, "children"=>[], "hint"=>nil}

Author: bootstraponline

android_tests/appium.txt

@@ -1,6 +1,8 @@
 [caps]
 platformName = "android"
 app = "./api.apk"
+appPackage = ""
+appActivity = ""
 
 [appium_lib]
 sauce_username = ""

lib/appium_lib/ios/helper.rb

@@ -18,7 +18,6 @@ def ios_password length=1
     # @option class_name [String,Symbol] the class name to filter on. case insensitive include match.
     # @return [String]
     def get_page element=source_window(0), class_name=nil
-      puts "Called get_page on #{element}"
       lazy_load_strings # populate @strings_xml
       class_name = class_name.to_s.downcase
 
@@ -131,7 +130,8 @@ def page opts={}
         window_number = -1
         class_name    = opts
       end
-      if current_context.start_with? 'WEBVIEW'
+      # current_context may be nil which breaks start_with
+      if current_context && current_context.start_with?('WEBVIEW')
         s = get_source
         parser = @android_html_parser ||= Nokogiri::HTML::SAX::Parser.new(Common::HTMLElements.new)
         parser.document.reset