前言
本文主要给大家介绍了关于iOS12适配及问题的相关内容,分享出来供大家参考学习,下面话不多说了,来一起看看详细的介绍吧
版本信息
Xcode: Version 10.0 beta (10L176w)
macOS: 10.14 Beta (18A293u)
iOS: 12.0(16A5288q)
问题及解决过程
1,StatusBar内部结构改变
现象:crash
crash log:
1,-[_UIStatusBarIdentifier isEqualToString:]: unrecognized selector sent to instance 0x283452820
2,Terminating app due to uncaught exception ‘NSInvalidArgumentException', reason: ‘-[_UIStatusBarIdentifier isEqualToString:]: unrecognized selector sent to instance 0x283452820'
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问题代码和解决方法
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+ (NSString *)getIphoneXNetWorkStates { UIApplication *app = [UIApplication sharedApplication]; id statusBar = [[app valueForKeyPath:@ "statusBar" ] valueForKeyPath:@ "statusBar" ]; id one = [statusBar valueForKeyPath:@ "regions" ]; id two = [one valueForKeyPath:@ "trailing" ]; NSArray *three = [two valueForKeyPath:@ "displayItems" ]; NSString *state = @ "无网络" ; for (UIView *view in three) { //alert: iOS12.0 情况下identifier的变成了类"_UIStatusBarIdentifier"而不是NSString,所以会在调用“isEqualToString”方法时发生crash, //修改前 // NSString *identifier = [view valueForKeyPath:@"identifier"]; //修改后 NSString *identifier = [[view valueForKeyPath:@ "identifier" ] description]; if ([identifier isEqualToString:@ "_UIStatusBarWifiItem.signalStrengthDisplayIdentifier" ]) { id item = [view valueForKeyPath:@ "_item" ]; //alert: 这个问题和上边一样itemId是_UIStatusBarIdentifier 类型,不是string NSString *itemId = [[item valueForKeyPath:@ "identifier" ] description]; if ([itemId isEqualToString:@ "_UIStatusBarWifiItem" ]) { state = @ "WIFI" ; } state = @ "不确定" ; } else if ([identifier isEqualToString:@ "_UIStatusBarCellularItem.typeDisplayIdentifier" ]) { UIView *statusBarStringView = [view valueForKeyPath:@ "_view" ]; // 4G/3G/E state = [statusBarStringView valueForKeyPath:@ "text" ]; } } return state; } |
总结
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原文链接:https://blog.csdn.net/wxs0124/article/details/80613847