1.重复文件报错
build Phases-> 删除多余的info.plist
2.library not found for -lstdc++
苹果在XCode10和iOS12中移除了libstdc++这个库，由libc++这个库取而代之，苹果的解释是lib转载自斗玩网stdc++已经标记为废弃有5年了，建议大家使用经过了llvm优化过并且全面支持C++11的libc++库。
建议把代码调整为依赖 libc++库 如果你引用的第三方厂商提供的sdk中依赖了libstdc++，联系厂商
3.StatusBar内部结构改变
现象：crash
crash log：
-[_UIStatusBarIdentifier isEqualToString:]: unrecognized selector sent to instance 0x283452820
* Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[_UIStatusBarIdentifier isEqualToString:]: unrecognized selector sent to instance 0x283452820’
解决方案:
+ (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;
}
4.新版本iPhoneXR,iPhoneXS,iPhoneXS MAX适配
img
- 各个机型枚举
#define iPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhoneXR ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(828, 1792), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhoneXS_Max ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2688), [[UIScreen mainScreen] currentMode].size) : NO)
-
目前iPhonex都是刘海屏，判断处这个特性，就可以统一做适配了
#define isIPhoneXAll ([UIScreen mainScreen].bounds.size.height == 812 || [UIScreen mainScreen].bounds.size.height == 896) -
目前iPhonex都是刘海屏，状态栏的高度均为44pt
#define isIPhoneXAl ([[UIApplication sharedApplication] statusBarFrame].size.height == 44) -
针对继承自UIScrollView的，需要处理一下内边距 第一步：关闭自动调整内边距
if (@available(iOS 11.0, *)) { [UIScrollView appearance].contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever; }
