Qt for ios 暗黑模式

环境：Qt5.14.2，MAC10.15.0，IOS13系统，Xcode11 

#include <QObject> class BackgroundColor : public QObject { Q_OBJECT public: explicit BackgroundColor(QObject *parent = nullptr); public slots: int getBackgroundColor(); private: };

 

#include "backgroundcolor.h" #include <UIKit/UIKit.h> BackgroundColor::BackgroundColor(QObject *parent) : QObject(parent) { } enum BackgroundMode{UndefinedColor=0,DarkColor,LightColor}; int BackgroundColor::getBackgroundColor() { int backgrouondColor=LightColor; if (@available(iOS 13.0, *)) { UIColor *lightGrayColor = [UIColor lightGrayColor]; UIColor *blackColor = [UIColor blackColor]; UIColor *dyColor= [UIColor colorWithDynamicProvider:^UIColor * _Nonnull(UITraitCollection * _Nonnull traitCollection) { UIColor *color = [UIColor lightGrayColor]; if (traitCollection.userInterfaceStyle ==UIUserInterfaceStyleDark ) { color =[UIColor blackColor];//dark }else if(traitCollection.userInterfaceStyle ==UIUserInterfaceStyleLight){ color =[UIColor lightGrayColor];//light } return color; }]; if(CGColorEqualToColor(dyColor.CGColor, lightGrayColor.CGColor )) { backgrouondColor=LightColor; } else if(CGColorEqualToColor(blackColor.CGColor, blackColor.CGColor )) { backgrouondColor=DarkColor; } } return backgrouondColor; }

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