奇怪的错误书写文字CGContext上

Question

我想使用此代码

NSString *text = NSLocalizedString(@"myText", nil); 

    NSDictionary *atributes = @{ 
            NSFontAttributeName : @"Helvetica Neue Bold", 
            NSForegroundColorAttributeName : [UIColor blackColor] 
            }; 

    [text drawAtPoint:CGPointMake(x1, y2) withAttributes: attributes]; 

写文本到CGContext上，但我看到这个错误

终止应用程序由于未捕获的异常“NSInvalidArgumentException”，原因：' - [__ NSCFConstantString pointSize]：无法识别的选择器发送到实例0x1001dfd40

任何线索？

Answer 1

set UIFont object for NSFontAttributeName。

NSString *text = NSLocalizedString(@"myText", nil); 

NSDictionary *atributes = @{ 
          NSFontAttributeName : [UIFont fontWithName:@"Helvetica Neue Bold" size: 17.0], 
          NSForegroundColorAttributeName : [UIColor blackColor] 
          }; 

[text drawAtPoint:CGPointMake(x1, y2) withAttributes: attributes];