iOS13 & Xcode11 的适配问题

https://www.jianshu.com/p/2ac8dbdcc88f

UISearchBar 的页面crash

Xcode11 iOS13问题汇总

    UISearchBar *searchView = [[UISearchBar alloc]init];

    NSString *version = [UIDevice currentDevice].systemVersion;
    UITextField *inputView;
    if (version.doubleValue >= 13.0) {
        NSUInteger numViews = [searchView.subviews count];
        for(int i = 0; i < numViews; i++) {
            if([[searchView.subviews objectAtIndex:i] isKindOfClass:[UITextField class]]) {
                inputView = [searchView.subviews objectAtIndex:i];
            }
        }
    } else {
        inputView = [searchView valueForKey:@"_searchField"];
    }
    ... ...
    ... ...

iOS13 黑夜模式

iOS13简单适配
关于新增iOS 13 Dark Mode API
1、全局配置
info.plist
key: User Interface Style
value:Light/Dark

2、单界面配置

-(UIUserInterfaceStyle)overrideUserInterfaceStyle{
    return UIUserInterfaceStyleDark;
}

typedef NS_ENUM(NSInteger, UIUserInterfaceStyle) {
    UIUserInterfaceStyleUnspecified,
    UIUserInterfaceStyleLight,
    UIUserInterfaceStyleDark,
} API_AVAILABLE(tvos(10.0)) API_AVAILABLE(ios(12.0)) API_UNAVAILABLE(watchos);

3、模拟器调黑夜模式:在Xcode中调Environment Overrides

调黑夜模式

4、图片黑夜模式适配

Any
Any/Dark
Any/Dark/Light

5、其他

其他Set