iOS本地化字符串指定参数顺序(应用场景：app内的多语言切换)

elf.FORMATLab.text =   [NSString stringWithFormat:KNLocal(@"FORMAT", nil), @"csdn", @"https://kunnan.blog.csdn.net/article/details/103733872"];

"FORMAT" = "I am %2$@ from '%1$@'";

"FORMAT" = "我是来自“%1$@”的%2$@";

@interface ViewController ()
/**
 中英文lab,用于切换语言：处理切换中英文语言的动作事件
 */
@property (weak, nonatomic) UILabel *languageLab;

/**
 用于测试指定参数顺序： 在%和@中间加上1$,2$等等就可以啦，数字代表参数的顺序。
 */
@property (weak, nonatomic) UILabel *FORMATLab;


@end

@implementation ViewController

- (void)viewDidLoad {
    
    
    [super viewDidLoad];
    [self languageLab];

    self.view.backgroundColor = UIColor.whiteColor;
    
    
    
    self.FORMATLab.text =   [NSString stringWithFormat:KNLocal(@"FORMAT", nil), @"csdn", @"https://kunnan.blog.csdn.net/article/details/103733872"];
    
    
    
    
    
    
    if (@available(iOS 13.0, *)) {

    
    
    [self testUIPageControl];
        
    }
    
}

- (UILabel *)FORMATLab{
    if (!_FORMATLab) {
        UILabel *tmp = [[UILabel alloc]init];
        
        _FORMATLab = tmp;
        
        tmp.textColor = rgb(51,51,51);
        
        tmp.font = kBoldFont(15);
        
        tmp.numberOfLines = 0;
        
        
        tmp.textAlignment = NSTextAlignmentCenter;
        

        
        
        [self.view addSubview:tmp];
        
        __weak __typeof__(self) weakSelf = self;

        [tmp mas_makeConstraints:^(MASConstraintMaker *make) {
           
            make.centerY.equalTo(weakSelf.view).offset(kAdjustRatio(-80));
            

            make.centerX.equalTo(weakSelf.view).offset(-kAdjustRatio(0));
            
            make.left.equalTo(weakSelf.view).offset(-kAdjustRatio(10));
            make.right.equalTo(weakSelf.view).offset(-kAdjustRatio(10));

            
//            make.size.mas_equalTo(CGSizeMake(kAdjustRatio(100), kAdjustRatio(40)));
                        
            
            
        }];
        
        
        
    }
    return _FORMATLab;
}