diff --git a/app/api/mobile/entities/course_dynamic.rb b/app/api/mobile/entities/course_dynamic.rb
index 5e22e3df7..aa8aadbb6 100644
--- a/app/api/mobile/entities/course_dynamic.rb
+++ b/app/api/mobile/entities/course_dynamic.rb
@@ -1,9 +1,15 @@
 module Mobile
   module Entities
     class CourseDynamic < Grape::Entity
+      include Redmine::I18n
       def self.course_dynamic_expose(field)
         expose field do |c,opt|
-          c[field] if (c.is_a?(Hash) && c.key?(field))
+          if field == :update_time
+            (format_time(c[field]) if (c.is_a?(Hash) && c.key?(field)))
+          else
+            c[field] if (c.is_a?(Hash) && c.key?(field))
+          end
+
         end
       end
       course_dynamic_expose :type
@@ -11,6 +17,8 @@ module Mobile
       course_dynamic_expose :course_name
       course_dynamic_expose :course_id
       course_dynamic_expose :course_img_url
+      course_dynamic_expose :message
+      course_dynamic_expose :update_time
     end
   end
 end
\ No newline at end of file
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 06e5dac30..1c26ec07e 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -177,6 +177,22 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  def logged_user_by_apptoken
+    #从手机端传来apptoken则将当前登陆用户变为对应的用户
+    if params[:apptoken]
+      token = ApiKey.where(access_token: params[:apptoken]).first
+      if token && !token.expired?
+        @current_user = User.find(token.user_id)
+      end
+      unless @current_user.nil?
+        self.logged_user = @current_user
+        if @current_user
+          @current_user.update_column(:last_login_on, Time.now)
+        end
+      end
+    end
+  end
+
   # Logs out current user
   def logout_user
     if User.current.logged?
diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 8fae547c4..9b66c047f 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -17,6 +17,7 @@ class CoursesController < ApplicationController
   menu_item l(:label_sort_by_influence), :only => :index
 
   before_filter :can_show_course, :except => []
+  before_filter :logged_user_by_apptoken,:only => [:show,:new_homework,:feedback]
   before_filter :find_course, :except => [ :index, :search,:list, :new,:join,:unjoin, :create, :copy, :statistics, :new_join, :course, :enterprise_course, :course_enterprise,:view_homework_attaches,:join_private_courses]
   before_filter :authorize_course, :only => [:show, :settings, :edit, :update, :modules, :close, :reopen, :view_homework_attaches, :course]
   before_filter :authorize_course_global, :only => [:view_homework_attaches, :new,:create]
diff --git a/app/controllers/homework_attach_controller.rb b/app/controllers/homework_attach_controller.rb
index 2c943e778..ba7e92467 100644
--- a/app/controllers/homework_attach_controller.rb
+++ b/app/controllers/homework_attach_controller.rb
@@ -6,7 +6,7 @@ class HomeworkAttachController < ApplicationController
   ###############################
   before_filter :can_show_course,except: []
   #判断当前角色权限时需先找到当前操作的project
-  before_filter :find_course_by_bid_id, :only => [:new]
+  before_filter :logged_user_by_apptoken,:find_course_by_bid_id, :only => [:new]
   before_filter :find_bid_and_course,:only => [:get_not_batch_homework,:get_batch_homeworks,:get_homeworks,:get_homework_jours, :get_student_batch_homework, :get_my_homework]
   before_filter :find_course_by_hoemwork_id, :only => [:edit,:update,:destroy,:show,:add_homework_users,:destory_homework_users, :praise_homework]
   #判断当前角色是否有操作权限
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 48c08e2fc..e6171bf81 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -19,6 +19,7 @@ class UsersController < ApplicationController
   layout :setting_layout
   #Added by young
   before_filter :auth_login1, :only => [:show, :user_activities, :user_newfeedback]
+  before_filter :logged_user_by_apptoken, :only => [:show,:user_newfeedback]
   menu_item :activity
   menu_item :user_information, :only => :info
   menu_item :user_course, :only => :user_courses
diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
index 46b59ef08..c0d3d2f83 100644
--- a/app/services/courses_service.rb
+++ b/app/services/courses_service.rb
@@ -1,3 +1,4 @@
+#coding=utf-8
 class CoursesService
   include ApplicationHelper
   include CoursesHelper
@@ -344,27 +345,67 @@ class CoursesService
     else
       membership = @user.coursememberships.all(:conditions => Course.visible_condition(current_user))
     end
+    if membership.nil? || membership.count == 0
+      raise l(:label_no_courses,:locale => current_user.language.nil? ? 'zh':current_user.language)
+    end
     membership.sort! {|older, newer| newer.created_on <=> older.created_on }
     result = []
     membership.each do |mp|
       course = mp.course
-      unless current_user.nil? || !(current_user.admin? || course.is_public == 1 || (course.is_public == 0 && current_user.member_of_course?(course)))
-        count,is_teacher = get_course_anonymous_evaluation current_user,course
-        if is_teacher
-          student_commit_number = count
-        else
-          need_anonymous_comments_count = count
+      latest_course_dynamics = []
+      latest_news = course.news.order("created_on desc").first
+      unless latest_news.nil?
+        latest_course_dynamics << {:type => 1,:time => latest_news.created_on,:message => '最近更新了通知' }#l(:label_recently_updated_notification,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+      end
+      latest_message = course.journals_for_messages.order("created_on desc").first
+      unless latest_message.nil?
+        latest_course_dynamics << {:type => 2,:time => latest_message.created_on,:message => '最近更新了留言'}#l(:label_recently_updated_message,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+      end
+      latest_attachment = course.attachments.order("created_on desc").first
+      unless latest_attachment.nil?
+        latest_course_dynamics << {:type => 3,:time => latest_attachment.created_on,:message => '最近更新了课件'}#l(:label_recently_updated_courseware,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+      end
+      latest_bid = course.homeworks.order('updated_on DESC').first
+      unless latest_bid.nil?
+        latest_course_dynamics << {:type => 4,:time => latest_bid.updated_on,:message => '最近更新了作业'}#l(:label_recently_updated_homework,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+      end
+      #每个作业中的最新留言
+      messages = []
+      course.homeworks.each do |bid|
+        jour = bid.journals_for_messages.order("created_on desc").first
+        unless jour.nil?
+          messages << jour
         end
-        news_count = course.news.count
-        message_count = course.journals_for_messages.count
-
-        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 1,:count => message_count}
-        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 2,:count => need_anonymous_comments_count}
-        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 3,:count => student_commit_number}
-        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 4,:count => news_count}
-        #{:course_name => course.name,:need_anonymous_comments_count=>need_anonymous_comments_count,:student_commit_number=>student_commit_number,:news_count=> news_count,:message_count=>message_count}
+      end
+      unless messages.count == 0
+        messages.sort!{|order,newer| newer.created_on <=> order.created_on}
+      end
+      latest_bid_message = messages.first
+      unless latest_bid_message.nil?
+        latest_course_dynamics << {:type => 2,:time => latest_bid_message.created_on,:message => '最近更新了留言'}#l(:label_recently_updated_message,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+      end
+      #每个作业中学生最后提交的作业
+      homeworks = []
+      course.homeworks.each do |bid|
+         homework_attach = bid.homeworks.order('updated_at DESC').first
+         unless homework_attach.nil?
+           homeworks << homework_attach
+         end
+      end
+      unless homeworks.count == 0
+        homeworks.sort!{|order,newer| newer.updated_at <=> order.updated_at}
+      end
+      latest_homework_attach = homeworks.first
+      unless latest_homework_attach.nil?
+        latest_course_dynamics << {:type => 4,:time => latest_homework_attach.updated_at,:message => '最近更新了作业'}#l(:label_recently_updated_homework,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+      end
+      latest_course_dynamics.sort!{|order,newer| newer[:time] <=> order[:time]}
+      latest_course_dynamic = latest_course_dynamics.first
+      unless latest_course_dynamic.nil?
+        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => latest_course_dynamic[:type],:update_time => latest_course_dynamic[:time],:message => latest_course_dynamic[:message],:count => nil}
       end
     end
+    result.sort!{|order,newer| newer[:update_time] <=> order[:update_time]}
     result
   end
 
diff --git a/config/locales/en.yml b/config/locales/en.yml
index bebfb5605..4c710a6e1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1878,3 +1878,10 @@ en:
   label_enterprise_page_made: enterprise_page
 
   label_add_tag: Add Tag
+
+  #api
+   label_recently_updated_notification: Recently updated notification
+   label_recently_updated_homework: Recently updated the homework
+   label_recently_updated_message: Recently updated the message
+   label_recently_updated_courseware: Recently updated the courseware
+   label_no_courses: You do not participate in any course, please search the curriculum, course, or create a course!
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index 263fa7439..d7ca2d607 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -2589,3 +2589,10 @@ zh:
   label_attachment_sharer: 共享者
   label_attachment_upload_time: 上传时间
 
+
+  #api
+  label_recently_updated_notification: 最近更新了通知
+  label_recently_updated_homework: 最近更新了作业
+  label_recently_updated_message: 最近更新了留言
+  label_recently_updated_courseware: 最近更新了课件
+  label_no_courses: 您没有参与任何课程，请搜索课程、加入课程，或者创建课程吧！