framework not found
问题：在build的时候framework not found 解决： 添加需要的framework 确定framework齐全的情况下，就是系统添加了冗余的framework编译需求，找到require列表删除即可 project.xcodeproj文件--->显示包内容--->proje……
分类 iOS 中的文章
libstdc++缺失问题
问题：libstdc++ not found 原因：libstdc++ was deprecated 5 years ago,we should update project to use libc++ 解决：更新工程或者下载库到当前工程，下载地址 https://github.com/zhangjk4859/zhangjk4859.github.io/raw/zjk/files/libstdc--master.zip 下载完成以后执行对应.sh文件即可 参考：1.https://github.com/devdawei/libstdc- 2.https://www.jianshu.com/p/e694782b8740……
Xcode12,iOS14，app启动慢
问题：启动app会白屏很长一段时间，即使是一个全新的app 解决方案： In the Xcode menu,go to product > scheme > edit scheme open the info tab Uncheck the debug executables checkbox 参考：1. https://stackoverflow.com/questions/63929122/slow-app-launch-time-after-updating-to-ios-14-and-xcode-12 2.https://developer.apple.com/forums/thread/651012……
链表是什么
链表了解吗 Linked list is a sequence of links which contains items Link - Each link of a linked list can store a data called an element Next - Each link of a linked list contains a link to the next link called Next LinkedList - A Linked List contains the connection link to the first link called First Linked list can be visualized as a chain of nodes,where every node points to hte next node  base64Encoding] 经过检查问题发生在字典取出值没有判空就传递给方法使用，细节也要注意，养成良好的编码习惯 NSString *urlstr = dic[@"imgBase64"]; NSData *data = [[NSData alloc] initWithBase64Encoding:urlstr]; 正确的代码 id obj = dic[@"imgBase64"]; if (obj && [obj isKindOfClass:[NSString class]]) { NSString *urlstr = (NSString *)obj; NSData *data = [[NSData alloc] initWithBase64Encoding:urlstr]; }……
2020-11安装cocoapods问题
今天安装pods发生无法下载问题， Unable to download data from XXX 切换了镜像源解决 查看镜像源 gem sources -l 删除淘宝镜像源 -r remove sudo gem sources -r https://ruby.taobao.org/ 添加新的镜像源 -a add sudo gem sources -a https://rubygems.org 安装 sudo gem install cocoapods 成功 Successfully installed cocoapods-1.10.0 Parsing documentation for cocoapods-1.10.0 Done installing documentation for cocoapods after 2 seconds 参考：https://blog.csdn.net/li_ph/article/details/438……
static-lib
static lib a unit of code linked at compile time,which does not change
Dynamic lib a unit of code and/or assets linked at runtime that may change only Apple is allowed to create dynamic libraries for iOS
Software Framework a compiled set of code that accomplished a task,hence,you can actually have a static framework or a dynamic framework,which are typically just the compiled versions of the above.
source：https://stackoverflow.com/questions/15331056/library-static-dynamic-or-framework-project-inside-another-project……
