Implement pull-down refresh effects. All IOS versions can be used.

First, no picture, no truth

Use third-party class libraries for pull-down refresh results

Odrefreshcontrol

Example directory structure:

Resources resource folder

Thirdpartlib third-party class library folder

Direct core callCodeThere are only six sentences in total, which are easy to use.

Set the position of the pull-down refresh

V_animateindicator * V = [[v_animateindicator alloc] initwithframe: cgrectmake (0. F,0. F,20. F,20. F)]; odrefreshcontrol* Refreshcontrol =[[Odrefreshcontrol alloc] initinscrollview: Self. ptv_main activityindicatorview: V]; [refreshcontrol addtarget: Self action: @ selector (role :) forcontrolevents: uicontroleventvaluechanged];
 

Method called after the pull-down refresh

-( void ) dropviewdidbeginrefreshing :( odrefreshcontrol * ) refreshcontrol {  double  delayinseconds =  3.0  ; dispatch_time_t poptime  = dispatch_time (dispatch_time_now, delayinseconds *  nsec_per_sec); dispatch_after (poptime, dispatch_get_main_queue (),  ^ ( void  ) { ///   Start   [self refreshcell];  ///   end   [refreshcontrol endrefreshing];});}  

prj_pulldownrefresh.zip example code address: http://ishare.iask.sina.com.cn/f/34837888.html