drawInRect:withFont:iOS 7无效

Question

我使用的是一个库(SGInfoAlert),它使用了弃用的代码drawInRect:r withFont:.我尝试更改一些代码以在iOS 7中修复它,但文本没有显示.谁知道为什么会这样？

// Changed this
//[info_ drawInRect:r withFont:[UIFont systemFontOfSize:kSGInfoAlert_fontSize]];

// To this
NSDictionary *textAttributes = @{NSFontAttributeName: [UIFont systemFontOfSize:kSGInfoAlert_fontSize]};

[info_ drawInRect:r withAttributes:textAttributes];

这是git存储库https://github.com/sagiwei/SGInfoAlert

Answer 1

好.我发现了一个问题.

// iOS 7 fix
UIFont* font = [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline];

NSDictionary *attrs = @{ NSForegroundColorAttributeName : [UIColor whiteColor],
                         NSFontAttributeName : font,
                         NSTextEffectAttributeName : NSTextEffectLetterpressStyle};


[info_ drawInRect:r withAttributes:attrs];