ifish/Ifish/Utinitys/Category/UIViewController+Navgation.m

//
//  UIViewController+Navgation.m
//  E-Mobile7
//
//  Created by ldg on 2018/4/13.
//  Copyright © 2018年 Weaver. All rights reserved.
//

#import "UIViewController+Navgation.h"


@implementation UIViewController (Navgation)


+ (UIColor *)colorWithHexString:(NSString *)stringToConvert
{
    if ([stringToConvert hasPrefix:@"#"])
    {
        stringToConvert = [stringToConvert substringFromIndex:1];
    }
    float alpha=1.0;
    if (stringToConvert.length>6&&![stringToConvert hasPrefix:@"0x"])//含有透明度
    {
        NSString*alphaString=[stringToConvert substringToIndex:2];
        NSScanner *alphaScanner = [NSScanner scannerWithString:alphaString];
        unsigned hex;
        
        if (![alphaScanner scanHexInt:&hex])
        {
            alpha=1.0;
        }
        else
        {
            const char *hexChar = [alphaString cStringUsingEncoding:NSUTF8StringEncoding];
            int hexNumber;
            sscanf(hexChar, "%x", &hexNumber);
            
            alpha=hexNumber/255.0;
            
        }
    }
    
    NSScanner *scanner = [NSScanner scannerWithString:stringToConvert];
    unsigned hexNum;
    
    if (![scanner scanHexInt:&hexNum])
    {
        return [UIColor clearColor];
    }
    
    return      [UIColor \
    colorWithRed:((float)((hexNum & 0xFF0000) >> 16))/255.0 \
    green:((float)((hexNum & 0xFF00) >> 8))/255.0 \
                 blue:((float)(hexNum & 0xFF))/255.0 alpha:alpha];
}
+ (UIImage *)createImageWithColor:(UIColor *)color
{
    CGRect rect=CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetFillColorWithColor(context, [color CGColor]);
    CGContextFillRect(context, rect);
    UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return theImage;
}

- (void)setNavbgColorStr:(NSString *)colorStr
{
    
    UIImage *image = [self.class createImageWithColor:[self.class colorWithHexString:colorStr]];
    [self setNavbgImage:image];
}
- (void)setNavbgColor:(UIColor *)color
{
    UIImage *image = [self.class createImageWithColor:color];
    [self setNavbgImage:image];
}
- (void)setNavbgImage:(UIImage *)image
{
    UINavigationController *nav = nil;
    if ([self isKindOfClass:UINavigationController.class]) {
        nav = (UINavigationController *)self;
    }else{
        nav = self.navigationController;
    }
    if (image && nav) {
        if (@available(iOS 15.0, *)) {
            UINavigationBarAppearance *apperar = [self getNavgationAppearanceWithNavgationController:nav.navigationBar];
            apperar.backgroundImage = image;
            nav.navigationBar.standardAppearance = apperar;
            nav.navigationBar.scrollEdgeAppearance = apperar;
        }else{
            [nav.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
        }
    }
}
-(UIImage*)getNaveImage
{
    UINavigationController *nav = nil;
    if ([self isKindOfClass:UINavigationController.class]) {
        nav = (UINavigationController *)self;
    }else{
        nav = self.navigationController;
    }
    if (nav) {
        if (@available(iOS 15.0, *)) {
            UINavigationBarAppearance *apperar = [self getNavgationAppearanceWithNavgationController:nav.navigationBar];
            return apperar.backgroundImage;
        }else{
           
            return [nav.navigationBar
             backgroundImageForBarMetrics:UIBarMetricsDefault];
        }
    }
    return nil;
}

- (UINavigationBarAppearance *)getNavgationAppearanceWithNavgationController:(UINavigationBar *)bar
API_AVAILABLE(ios(13.0)){
    if (@available(iOS 15.0, *)) {
        if (bar.standardAppearance) {
            return bar.standardAppearance;
        }
        
        if (bar.scrollEdgeAppearance) {
            return bar.scrollEdgeAppearance;
        }
        
        return [[UINavigationBarAppearance alloc] init];
    }
    return nil;
}

- (void)setNavTitleColor:(UIColor *)color
{
    UINavigationController *nav = nil;
    if ([self isKindOfClass:UINavigationController.class]) {
        nav = (UINavigationController *)self;
    }else{
        nav = self.navigationController;
    }
    if (color && nav) {
        if (@available(iOS 15.0, *)) {
            UINavigationBarAppearance *apperar = [self getNavgationAppearanceWithNavgationController:nav.navigationBar];
            apperar.titleTextAttributes = @{NSForegroundColorAttributeName:color};
            nav.navigationBar.standardAppearance = apperar;
            nav.navigationBar.scrollEdgeAppearance = apperar;
        }else{
            nav.navigationBar.titleTextAttributes = @{NSForegroundColorAttributeName:color};
        }
        
    }
}


- (void)setNavTitleFont:(UIFont *)font
{
    UINavigationController *nav = nil;
    if ([self isKindOfClass:UINavigationController.class]) {
        nav = (UINavigationController *)self;
    }else{
        nav = self.navigationController;
    }
    if (font && nav) {
        if (@available(iOS 15.0, *)) {
            UINavigationBarAppearance *apperar = [self getNavgationAppearanceWithNavgationController:nav.navigationBar];
            apperar.titleTextAttributes = @{NSFontAttributeName:font};
            nav.navigationBar.standardAppearance = apperar;
            nav.navigationBar.scrollEdgeAppearance = apperar;
        }else{
            nav.navigationBar.titleTextAttributes = @{NSFontAttributeName:font};
        }
        
    }
}
- (void)setNavTitleTextAttributes:(NSDictionary*)attribute
{
    UINavigationController *nav = nil;
    if ([self isKindOfClass:UINavigationController.class]) {
        nav = (UINavigationController *)self;
    }else{
        nav = self.navigationController;
    }
    if (attribute && nav) {
        if (@available(iOS 15.0, *)) {
            UINavigationBarAppearance *apperar = [self getNavgationAppearanceWithNavgationController:nav.navigationBar];
            apperar.titleTextAttributes = attribute;
            nav.navigationBar.standardAppearance = apperar;
            nav.navigationBar.scrollEdgeAppearance = apperar;
        }else{
            nav.navigationBar.titleTextAttributes = attribute;
        }
        
    }
}



@end