在我的Catalyst应用程序中,我使用Mac Helpers存储库中的代码生成了一个带有回调的NSColorPanel
。
@interface IPdfmaccolorPanel : NSObject
+ (void)showColorPanelWithColorChangeHandler:(void(^)(UIColor *color))colorChangeHandler;
/// Hides the color picker panel and removes the colorChangeHandler observer
+ (void)hide;
+ (void)removeColorChangeHandlerObserver;
@end
@interface NSColorPanel_Catalyst : NSObject
+ (instancetype)sharedColorPanel;
- (void)makeKeyAndOrderFront:(id)sender;
- (void)orderFront:(id)sender;
- (void)orderOut:(id)sender;
- (void)setTarget:(id)target;
- (void)setaction:(SEL)action;
- (UIColor *)color;
@end
@interface IPdfmaccolorPanel ()
@property (nonatomic,copy) void(^colorChangeHandler)(UIColor *color);
@end
@implementation IPdfmaccolorPanel
+ (instancetype)sharedPanel
{
static IPdfmaccolorPanel *panel = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken,^{
panel = [IPdfmaccolorPanel new];
});
return panel;
}
+ (NSColorPanel_Catalyst *)colorPanel
{
return [NSClassFromString(@"NSColorPanel") performSelector:@selector(sharedColorPanel)];
}
+ (void)showColorPanelWithColorChangeHandler:(void(^)(UIColor *color))colorChangeHandler
{
IPdfmaccolorPanel *observer = [IPdfmaccolorPanel sharedPanel];
observer.colorChangeHandler = colorChangeHandler;
NSColorPanel_Catalyst *colorPanel = [self colorPanel];
[colorPanel setTarget:observer];
[colorPanel setaction:@selector(colorChange:)];
[colorPanel orderFront:nil];
}
+ (void)hide
{
[[self colorPanel] orderOut:nil];
[self removeColorChangeHandlerObserver];
}
+ (void)removeColorChangeHandlerObserver
{
[IPdfmaccolorPanel sharedPanel].colorChangeHandler = nil;
}
- (void)colorChange:(NSColorPanel_Catalyst *)colorPanel
{
if (self.colorChangeHandler) self.colorChangeHandler(colorPanel.color);
}
@end
我像这样生成它:
IPdfmaccolorPanel.show { (color) in
if let color = color {
self.saveColor(color)
}
}
然后将其写入Realm:
public func saveColor(_ color: UIColor) {
try! realm.write {
let converted = ColorUtility.convert(color: color)
if let green = converted["green"] {
self.restaurant.green = green
}
if let red = converted["red"] {
self.restaurant.red = red
}
if let blue = converted["blue"] {
self.restaurant.blue = blue
}
if let alpha = converted["alpha"] {
self.restaurant.alpha = alpha
}
}
}
但是,发生的是,因为我收到了很多回调,所以Realm正在编写很多颜色,从而使颜色面板滞后。有什么想法可以解决这个问题吗?