最近因项目需求，需要用到强制更新功能，网上搜了一下，挺多的，但是把网上的代码拷贝以后，发现一个bug，就是进app，弹出框显示，点击现在升级，跳转到appstore下载里面，但是我不下载，又切回到app里面，发现弹出框就不跳了，其实也简单，就是appdelegate里面有个代理方法，就是当app从后台切到前台走的方法，将强制更新方法在这里面在调用一下就行了~~~话不多说，上代码！！！用的话直接粘贴复制~
效果图:
在appdelegate里面写下面代码
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//提示版本更新 [self versonupdate];#pragma mark ------提示用户版本更新-------(void)versonupdate{ //定义app地址 nsstring *urld = [nsstring stringwithformat:@"http://itunes.apple.com/lookup?id=%d",1178114725]; nsurl *url = [nsurl urlwithstring:urld]; nsmutableurlrequest *request = [nsmutableurlrequest requestwithurl:url cachepolicy:nsurlrequestreloadignoringcachedata timeoutinterval:10]; [request sethttpmethod:@"post"]; nsurlsession *session = [nsurlsession sharedsession]; nsurlsessiondatatask *task = [session datataskwithurl:url completionhandler:^(nsdata * _nullable data, nsurlresponse * _nullable response, nserror * _nullable error) { nslog(@"%@",response); nsmutabledictionary *receivestatusdic = [[nsmutabledictionary alloc]init]; if (data) { nsdictionary *receivedic = [nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingmutableleaves error:nil]; if ([[receivedic valueforkey:@"resultcount"] intvalue] > 0) { [receivestatusdic setobject:@"1" forkey:@"status"]; [receivestatusdic setobject:[[[receivedic valueforkey:@"results"] objectatindex:0] valueforkey:@"version"] forkey:@"version"]; [self performselectoronmainthread:@selector(receivedata:) withobject:receivestatusdic waituntildone:no]; }else{ [receivestatusdic setvalue:@"1" forkey:@"status"]; } }else{ [receivestatusdic setvalue:@"-1" forkey:@"status"]; } }]; [task resume];}-(void)receivedata:(id)sender{ //获取app自身版本号 nsstring *localversion = [[[nsbundle mainbundle]infodictionary]objectforkey:@"cfbundleshortversionstring"]; nsarray *localarray = [localversion componentsseparatedbystring:@"."];//1.0 nsarray *versionarray = [sender[@"version"] componentsseparatedbystring:@"."];//3 2.1.1// if ((versionarray.count == 2) && (localarray.count == versionarray.count)) { if ([localarray[0] intvalue] < [versionarray[0] intvalue]) { [self updateversion]; }else if ([localarray[0] intvalue] == [versionarray[0] intvalue]){ if ([localarray[1] intvalue] < [versionarray[1] intvalue]) { [self updateversion]; }else if ([localarray[1] intvalue] == [versionarray[1] intvalue]){ if ([localarray[2] intvalue] < [versionarray[2] intvalue]) { [self updateversion]; } } }// }}-(void)updateversion{ nsstring *msg = [nsstring stringwithformat:@"版本过低，需要升级到最新版本"]; uialertcontroller *alertcontroller = [uialertcontroller alertcontrollerwithtitle:@"升级提示" message:msg preferredstyle:uialertcontrollerstylealert]; uialertaction *otheraction = [uialertaction actionwithtitle:@"现在升级" style:uialertactionstyledestructive handler:^(uialertaction*action) { nsurl *url = [nsurl urlwithstring:[nsstring stringwithformat:@"https://itunes.apple.com/cn/app/m-help/id1178114725?mt=8"]]; [[uiapplication sharedapplication]openurl:url]; }]; [alertcontroller addaction:otheraction]; [self.window.rootviewcontroller presentviewcontroller:alertcontroller animated:yes completion:nil];}//当app从后台切到前台时调用的方法- (void)applicationdidbecomeactive:(uiapplication * )application{ [self versonupdate];} |
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原文链接：http://www.jianshu.com/p/700505ce2643?utm_source=tuicool&utm_medium=referral#
