一、基本思路

1> 解決方案1，使用顏色作為圖片素材的命名關(guān)鍵字
問題1：要保證每套圖片的文件名 顏色＋ 名稱.png的格式比較麻煩
問題2：如果要將某一個(gè)圖片應(yīng)用到其他皮膚不方便
2> 解決方案2腮恩，利用Bundle，將圖片文件保存在不同的Bundle中
問題：平面設(shè)計(jì)師維護(hù)不方便
3> 解決方案3偏窝，利用文件夾(藍(lán)色)，將圖片文件保存在不同文件夾中
好處：便于平面設(shè)計(jì)師針對(duì)不同的文件夾維護(hù)圖片素材

#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIImageView *faceImageView;
@property (weak, nonatomic) IBOutlet UIImageView *heartImageView;
@property (weak, nonatomic) IBOutlet UIImageView *rectImageView;

@end

@implementation ViewController

/*
 問題一:默認(rèn)進(jìn)來沒有皮膚顏色
 
 問題二:沒有記錄用戶選中皮膚顏色
 
 問題三:和美工溝通的問題
 
 問題四:多個(gè)控制器的換膚
 */

- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSString *skinColor = [[NSUserDefaults standardUserDefaults] objectForKey:@"skinColor"];
    if (skinColor == nil) {
        skinColor = @"blue";
    }
    
    [self changeSkinWithSkinColor:skinColor];
}

- (IBAction)changeToBlueSkin {
    [self changeSkinWithSkinColor:@"blue"];
}

- (IBAction)changeToRedSkin {
    [self changeSkinWithSkinColor:@"red"];
}

- (IBAction)changeToGreenSkin {
    [self changeSkinWithSkinColor:@"green"];
}

- (void)changeSkinWithSkinColor:(NSString *)skinColor
{
    NSString *faceImageName = [NSString stringWithFormat:@"skin/%@/face", skinColor];
    self.faceImageView.image = [UIImage imageNamed:faceImageName];
    NSString *heartImageName = [NSString stringWithFormat:@"skin/%@/heart", skinColor];
    self.heartImageView.image = [UIImage imageNamed:heartImageName];
    NSString *rectImageName = [NSString stringWithFormat:@"skin/%@/rect", skinColor];
    self.rectImageView.image = [UIImage imageNamed:rectImageName];
    
    // 記錄用戶選中的皮膚顏色
    [[NSUserDefaults standardUserDefaults] setObject:skinColor forKey:@"skinColor"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

@end

屏幕快照 2017-07-02 下午11.14.43.png

二、換膚工具類

#import <UIKit/UIKit.h>

@interface SkinTool : NSObject

+ (void)setSKinColor:(NSString *)skinColor;

+ (UIImage *)skinToolWithImageName:(NSString *)imageName;

+ (UIColor *)skinToolWithLabelColor;

@end


#import "SkinTool.h"

@implementation SkinTool

static NSString *_skinColor;

+ (void)initialize
{
    _skinColor = [[NSUserDefaults standardUserDefaults] objectForKey:@"skinColor"];
    if (_skinColor == nil) {
        _skinColor = @"blue";
    }
}

+ (void)setSKinColor:(NSString *)skinColor
{
    _skinColor = skinColor;
    
    // 保存用戶選中的皮膚顏色
    [[NSUserDefaults standardUserDefaults] setObject:skinColor forKey:@"skinColor"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

+ (UIImage *)skinToolWithImageName:(NSString *)imageName
{
    NSString *imagePath = [NSString stringWithFormat:@"skin/%@/%@", _skinColor ,imageName];
    
    return [UIImage imageNamed:imagePath];
}

+ (UIColor *)skinToolWithLabelColor
{
    // 1.獲取plist的路徑
    NSString *plistName = [NSString stringWithFormat:@"skin/%@/bgColor.plist", _skinColor];
    NSString *plistPath = [[NSBundle mainBundle] pathForResource:plistName ofType:nil];
    
    // 2.讀取顏色的點(diǎn)擊
    NSDictionary *colorDict = [NSDictionary dictionaryWithContentsOfFile:plistPath];
    
    // 3.讀取對(duì)應(yīng)顏色的字符串
    NSString *colorString = colorDict[@"labelBgColor"];
    
    // 4.獲取顏色數(shù)組
    NSArray *colorArray = [colorString componentsSeparatedByString:@","];
    
    // 5.讀取對(duì)應(yīng)RGB
    NSInteger red = [colorArray[0] integerValue];
    NSInteger green = [colorArray[1] integerValue];
    NSInteger blue = [colorArray[2] integerValue];
    
    return [UIColor colorWithRed:red/255.0 green:green/255.0 blue:blue/255.0 alpha:1.0];
}

@end


#import "ViewController.h"
#import "SkinTool.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIImageView *faceImageView;
@property (weak, nonatomic) IBOutlet UIImageView *heartImageView;
@property (weak, nonatomic) IBOutlet UIImageView *rectImageView;

@end

@implementation ViewController

/*
 問題一:默認(rèn)進(jìn)來沒有皮膚顏色
 
 問題二:沒有記錄用戶選中皮膚顏色
 
 問題三:和美工溝通的問題
 
 問題四:多個(gè)控制器的換膚
 
 問題五:換膚的ImageView不要寫在viewDidLoad方法
 */

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [self changeImages];
}
- (IBAction)changeToOrangeSkin {
    [SkinTool setSKinColor:@"orange"];
    
    [self changeImages];
}

- (IBAction)changeToBlueSkin {
    [SkinTool setSKinColor:@"blue"];
    
    [self changeImages];
}

- (IBAction)changeToRedSkin {
    [SkinTool setSKinColor:@"red"];
    
    [self changeImages];
}

- (IBAction)changeToGreenSkin {
    [SkinTool setSKinColor:@"green"];
    
    [self changeImages];
}

- (void)changeImages
{
    self.faceImageView.image = [SkinTool skinToolWithImageName:@"face"];
    self.heartImageView.image = [SkinTool skinToolWithImageName:@"heart"];
    self.rectImageView.image = [SkinTool skinToolWithImageName:@"rect"];
}

@end