iOS:我需要一种更好的方法来编写这段更改标签字体大小(粗体和常规)的代码

Question

基本上我有一种方法来检查不同的位置 (newPostion)，当遇到某个位置时，我将某些标签加粗，如下所示。但是，这似乎有很多代码。有一个更好的方法吗？我需要重构它以使其看起来更好，但我什至不知道从哪里开始。

 if(newPosition == 100){

    self.label.font = [utilClass boldFontWithSize:12];
    self.label1.font = [utilClass fontWithSize:12];
    self.label2.font  = [utilClass fontWithSize:12];
    self.label3.font =    [utilClass fontWithSize:12];
    self.label4.font = [utilClass fontWithSize:12];

}

else if(newPosition == 200){

    self.label.font = [utilClass fontWithSize:12];
    self.label1.font = [utilClass boldFontWithSize:12];
    self.label2.font  = [utilClass fontWithSize:12];
    self.label3.font =    [utilClass fontWithSize:12];
    self.label4.font = [utilClass fontWithSize:12];
}
else if (newPosition == -100) {

    self.label.font = [utilClass fontWithSize:12];
    self.label1.font = [utilClass fontWithSize:12];
    self.label2.font  = [utilClass boldFontWithSize:12];
    self.label3.font =    [utilClass fontWithSize:12];
    self.label4.font = [utilClass fontWithSize:12];

}

else (newPosition == -200) {

    self.label.font = [utilClass fontWithSize:12];
    self.label1.font = [utilClass fontWithSize:12];
    self.label2.font  = [utilClass fontWithSize:12];
    self.label3.font =    [utilClass boldFontWithSize:12];
    self.label4.font = [utilClass fontWithSize:12];

}

Answer 1

一个解决方案可能是:

UIFont *font = [utilClass fontWithSize:12];
UIFont *bold = [utilClass boldFontSize:12];

self.label.font = font;
self.label1.font = font;
self.label2.font = font;
self.label3.font = font;
self.label4.font = font;

if (newPosition == 100) {
    self.label.font = boldFont;
} else if (newPosition == 200) {
    self.label1.font = boldFont;
} else if (newPosition == -100) {
    self.label2.font = boldFont;
} else if (newPosition == -200) {
    self.label3.font = boldFont;
}

这避免了很多冗余代码。

如果您有一组标签而不是单独的 ivar，这会变得容易得多。

NSArray *labels = @[ self.label, self.label1, self.label2, self.label3, self.label4 ];
UIFont *font = [utilClass fontWithSize:12];
UIFont *bold = [utilClass boldFontSize:12];

for (UILabel *label in labels) {
    label.font = font;
}

if (newPosition == 100) {
    labels[0].font = boldFont;
} else if (newPosition == 200) {
    labels[1].font = boldFont;
} else if (newPosition == -100) {
    labels[2].font = boldFont;
} else if (newPosition == -200) {
    labels[3].font = boldFont;
}