如何使用drawInRect：withAttributes：而不是drawAtPoint：forWidth：withFont：fontSize：lineBreakMode：baselineAdjustment：在iOS 7中

本文介绍了如何使用drawInRect：withAttributes：而不是drawAtPoint：forWidth：withFont：fontSize：lineBreakMode：baselineAdjustment：在iOS 7中的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

此方法在iOS 7.0中已弃用：

This method is deprecated in iOS 7.0:

drawAtPoint:forWidth:withFont:fontSize:lineBreakMode:baselineAdjustment:

现在使用 drawInRect：withAttributes：代替。

我找不到fontSize和baselineAdjustment的attributeName。

I can't find the attributeName of fontSize and baselineAdjustment.

编辑

谢谢@Puneet的回答。

Thanks @Puneet answer.

实际上，我的意思是如果没有这些密钥，如何在iOS 7中实现这个方法？

Actually, I mean if there doesn't have these key, how to implement this method in iOS 7?

如下方法：

+ (CGSize)drawWithString:(NSString *)string atPoint:(CGPoint)point forWidth:(CGFloat)width withFont:(UIFont *)font fontSize:(CGFloat)fontSize
           lineBreakMode:(IBLLineBreakMode)lineBreakMode
      baselineAdjustment:(UIBaselineAdjustment)baselineAdjustment {
    if (iOS7) {
        CGRect rect = CGRectMake(point.x, point.y, width, CGFLOAT_MAX);

        NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
        paragraphStyle.lineBreakMode = lineBreakMode;

        NSDictionary *attributes = @{NSFontAttributeName: font, NSParagraphStyleAttributeName: paragraphStyle};

        [string drawInRect:rect withAttributes:attributes];

        size = CGSizeZero;
    }
    else {
        size = [string drawAtPoint:point forWidth:width withFont:font fontSize:fontSize lineBreakMode:lineBreakMode baselineAdjustment:baselineAdjustment];
    }
    return size;
}

我不知道如何传递 fontSize 和 baselineAdjustment to

I don't know how to pass fontSize and baselineAdjustment to

attributes 字典。

例如

NSBaselineOffsetAttributeName key应传递 NSNumer 到它，但 baselineAdjustment 是枚举。

NSBaselineOffsetAttributeName key should pass a NSNumer to it, but the baselineAdjustment is Enum.

是否还有其他方法可以传递这两个变量？

Isn't there have other way to pass the two variables?

推荐答案

您可以使用 NSDictionary 并应用如下属性：

You can use NSDictionary and apply attributes like this:

NSFont *font = [NSFont fontWithName:@"Palatino-Roman" size:14.0];

NSDictionary *attrsDictionary =

[NSDictionary dictionaryWithObjectsAndKeys:
                              font, NSFontAttributeName,
                              [NSNumber numberWithFloat:1.0], NSBaselineOffsetAttributeName, nil];

使用 attrsDictionary 作为参数。

参考：

SWIFT ：
IN 字符串 drawInRect不可用，但我们可以使用 NSString ：

SWIFT:IN String drawInRect is not available but we can use NSString instead:

let font = UIFont(name: "Palatino-Roman", size: 14.0)
let baselineAdjust = 1.0
let attrsDictionary =  [NSFontAttributeName:font, NSBaselineOffsetAttributeName:baselineAdjust] as [NSObject : AnyObject]
let str:NSString = "Hello World"
str.drawInRect(CGRectZero, withAttributes: attrsDictionary)

这篇关于如何使用drawInRect：withAttributes：而不是drawAtPoint：forWidth：withFont：fontSize：lineBreakMode：baselineAdjustment：在iOS 7中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

WithAttributes