1.崩潰信息如下：
Collection <__NSSetM: 0x146d47df0> was mutated while being enumerated.
在遍歷set時萝勤，對set做了操作（刪除或修改），發(fā)生崩潰。
修復(fù)辦法：
[aMutableSet enumerateObjectsUsingBlock:^(id _Nonnull obj, BOOL * _Nonnull stop) {
if (滿足條件)
{
*stop = YES;
[aMutableSet removeObject:obj];
}
}];
2.發(fā)布app時跃须，報如下錯誤：
Xcode 7 error: “Missing iOS Distribution signing identity for …”
解決辦法如下：
1.Download https://developer.apple.com/certificationauthority/AppleWWDRCA.cer
2.Double-click to install to Keychain.
3.Then in Keychain, Select View -> "Show Expired Certificates" in Keychain app.
4.It will list all the expired certifcates.
5.Delete "Apple Worldwide Developer Relations Certificate Authority certificates" from "login" tab
6.And also delete it from "System" tab.
這樣就好了。
參考：
http://stackoverflow.com/questions/32821189/xcode-7-error-missing-ios-distribution-signing-identity-for
3.web頁面調(diào)用相冊或相機
報錯如下：
Warning: Attempt to present <UIImagePickerController: 0x12734be00> on <MBTabBarVC: 0x1270fc000> whose view is not in the window hierarchy!
解決辦法：在自定義的tab頁面中重載下面方法球榆。
-(void)dismissViewControllerAnimated:(BOOL)flag completion:(void (^)(void))completion
{
if ( self.presentedViewController)
{
[super dismissViewControllerAnimated:flag completion:completion];
}
}
未完朽肥，待續(xù)...
