ios 由于苹果的审核政策,一旦上线后发现bug是件让人崩溃的事情
不过可以利用oc的runtime机制可以家用JSPatch动态的为工程打热补丁
下载地址:https://github.com/agelessman/JSPatch.git
如果不用cocoapods导入的话,不需要修改,如果拖到工程的,需要改头文件,
例如: #import “abc.h”
在appdelegate中添加类似下边的方法,写一个本地的属性记录补丁的版本号,如果文件存在,再调用
1 - (void)hotfix { 2 3 // 获得应用程序沙盒的Downloads文件夹路径 4 5 QKYGuideAccount *guideAccount = [QKYAccountTool guideAccount]; 6 7 NSArray *arrDownloadPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES); 8 NSString *loadPathsPath=[arrDownloadPaths objectAtIndex:0]; 9 NSString *patchPath = [loadPathsPath stringByAppendingPathComponent:[NSString stringWithFormat:@"patch_%@.js",guideAccount.patchVersion.length ? guideAccount.patchVersion : @"0"]];10 NSFileManager *fileManager = [NSFileManager defaultManager];11 BOOL isdir = NO;12 if ([fileManager fileExistsAtPath:patchPath isDirectory:&isdir]) {13 [JPEngine startEngine];14 [JPEngine evaluateScript:[NSString stringWithContentsOfFile:patchPath encoding:NSUTF8StringEncoding error:nil]];15 };16 17 QKYLog(@"Downloads path: %@",patchPath);18 }
在控制器中添加下边的方法,目的就是发请求到服务器,获取是否更新,
1 //处理热修复 2 self.dataController = [[QKYListDataController alloc] init]; 3 [self.dataController getIsNeedHotfixResultWithSuccessBlock:^(QKYIsNeedHotfixResult * _Nonnull success, BOOL last) { 4 5 if (success.code.integerValue == 1 && success.newpatch.integerValue == 1) { // 现在补丁 6 [self.dataController downloadpatchWithUrl:success.patchurl]; 7 } 8 9 10 } errorMsgBlock:^(NSError * _Nullable error, id _Nullable msgBody) {11 12 }];13 14 NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];15 NSString *version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];16 NSMutableDictionary *dicM = [NSMutableDictionary dictionary];17 [dicM setValue:@"2" forKey:@"comefrom"];18 [dicM setValue:version forKey:@"patchappversion"];19 QKYGuideAccount *guide = [QKYAccountTool guideAccount];20 [dicM setValue:guide.patchVersion.length ? guide.patchVersion : @"0" forKey:@"patchversion"];
需要说明的是这里的dataController 是一个模型,下载补丁的方法封装到了这个模型中
在下载的条件成熟的情况下,下载附件
1 - (void)downloadpatchWithUrl:(NSString *)url { 2 3 if (!url) return; 4 5 NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; 6 7 AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration]; 8 9 manager.responseSerializer = [AFHTTPResponseSerializer serializer];10 11 NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];12 13 NSProgress *downloadProgress = nil;14 15 NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:&downloadProgress destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) {16 17 NSURL *downloadURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];18 return [downloadURL URLByAppendingPathComponent:[NSString stringWithFormat:@"patch_%@.js",self.result.patchversion]];19 20 } completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {21 22 23 if (error) {24 return ;25 }26 QKYGuideAccount *account = [QKYAccountTool guideAccount];27 account.patchVersion = self.result.patchversion;28 [QKYAccountTool saveGuideAccount:account];29 30 [appDelegate hotfix];31 32 33 }];34 35 [downloadTask resume];36 }
下载成功后保存最新的补丁号到本地属性中,调用JSPatch,让刚下载的代码生效
需要特别说明的是,加载补丁文件,是有顺序的,例如0,1,2 而且补丁文件中使用的是js的代码,
能够帮助我的功能:
1 修复导致崩溃的错误
2 替换原来的方法
3.添加新的方法
4 替换原来的界面
等等,更多功能,有待研究
有问题可以写评论哦,