var app = angular.module('myApp',[]);
app.run(function($rootScope , $interval){
 var img=["http://hdn.xnimg.cn/photos/hdn321/20130612/2235/h_main_NNN4_e80a000007df111a.jpg" ,"http://ww2.sinaimg.cn/crop.0.0.1080.1080.1024/d773ebfajw8eum57eobkwj20u00u075w.jpg","http://h.hiphotos.baidu.com/zhidao/pic/item/3812b31bb051f81991b9d8dbdcb44aed2f73e787.jpg"]
 var i = 0;
 var timer = $interval(function(){
  if(i >= img.length){
   i = 0;
  }
  $rootScope.imgSrc = img[i++];
 },1000)
});

app.run(function($rootScope,$timeout){
 var img=["http://hdn.xnimg.cn/photos/hdn321/20130612/2235/h_main_NNN4_e80a000007df111a.jpg" ,"http://ww2.sinaimg.cn/crop.0.0.1080.1080.1024/d773ebfajw8eum57eobkwj20u00u075w.jpg","http://h.hiphotos.baidu.com/zhidao/pic/item/3812b31bb051f81991b9d8dbdcb44aed2f73e787.jpg"]
 var i = 0;
 $rootScope.c = 0;
 var loop = function(){
  $timeout(function(){
   if(i >= img.length){
    i = 0;
   }
   $rootScope.imgSrc=img[i++];
   loop();
   $rootScope.c += 1;
  },2000)
 };
 loop();
})

app.run(function($rootScope,$timeout){
 var img=["http://hdn.xnimg.cn/photos/hdn321/20130612/2235/h_main_NNN4_e80a000007df111a.jpg" ,"http://ww2.sinaimg.cn/crop.0.0.1080.1080.1024/d773ebfajw8eum57eobkwj20u00u075w.jpg","http://h.hiphotos.baidu.com/zhidao/pic/item/3812b31bb051f81991b9d8dbdcb44aed2f73e787.jpg"]
 var i = 0;
 $rootScope.c = 0;
 var loop = function(){
  $timeout(function(){
   if(i >= img.length){
    i = 0;
   }
   $rootScope.imgSrc=img[i++];
   loop();
   $rootScope.c += 1;
  },2000)
 };
 loop();
})