我正在使用各种颜色的iPhone应用程序。当用户选择特定颜色按钮时，我设置绘图颜色。我得到一些颜色，但在大多数情况下，我得到白色。
这里是我的代码：
-(IBAction)colorSelected:(UIButton *)sender
{
switch (sender.tag)
{
case 1:
self.drawcolor= [UIColor colorWithRed:200 green:191 blue:231 alpha:1];
break;
case 2:
self.drawcolor= [UIColor colorWithRed:163 green:73 blue:164 alpha:1];
break;
case 3:
self.drawcolor= [UIColor colorWithRed:112 green:146 blue:76 alpha:1];
break;
case 4:
self.drawcolor= [UIColor colorWithRed:63 green:72 blue:204 alpha:1];
break;
case 5:
self.drawcolor= [UIColor colorWithRed:153 green:217 blue:234 alpha:1];
break;
case 6:
self.drawcolor= [UIColor colorWithRed:0 green:162 blue:232 alpha:1];
break;
case 7:
self.drawcolor= [UIColor colorWithRed:181 green:230 blue:29 alpha:1];
break;
case 8:
self.drawcolor= [UIColor colorWithRed:34 green:177 blue:76 alpha:1];
break;
case 9:
self.drawcolor= [UIColor colorWithRed:239 green:228 blue:176 alpha:1];
break;
case 10:
self.drawcolor= [UIColor colorWithRed:255 green:201 blue:0 alpha:1];
break;
case 11:
self.drawcolor= [UIColor colorWithRed:255 green:201 blue:14 alpha:1];
break;
case 12:
self.drawcolor= [UIColor colorWithRed:237 green:28 blue:36 alpha:1];
break;
case 13:
self.drawcolor= [UIColor colorWithRed:255 green:127 blue:39 alpha:1];
break;
case 14:
self.drawcolor= [UIColor colorWithRed:255 green:174 blue:201 alpha:1];
break;
case 15:
self.drawcolor= [UIColor colorWithRed:185 green:122 blue:87 alpha:1];
break;
case 16:
self.drawcolor= [UIColor colorWithRed:136 green:0 blue:21 alpha:1];
break;
case 17:
self.drawcolor= [UIColor colorWithRed:195 green:195 blue:195 alpha:1];
break;
case 18:
self.drawcolor= [UIColor colorWithRed:127 green:127 blue:127 alpha:1];
break;
case 19:
self.drawcolor= [UIColor colorWithRed:255 green:255 blue:255 alpha:1];
break;
case 20:
self.drawcolor= [UIColor colorWithRed:0 green:0 blue:0 alpha:1];
break;
default:
break;
}
self.preColor=self.drawcolor;
self.lineWidth=self.prelineWidth;
}
任何人都可以告诉我我做错了什么？
Sumit
解决方法
这些值在0.0到1.0的范围内。
例如。除以255，但记住小数点，所以你得到浮点除法而不是整数除法。
喜欢
selectedColor = [UIColor colorWithRed:14.0/255.0 green:114.0/255.0 blue:199.0/255.0 alpha:1];
