来自sqlite的自定义浮动-> UIButton.frame CGRectMake

Question

is it possible to load a float value out of an internal sqlite database and use it as a variable in CGMakeRect from UIButton?

I can't get this to work :-(

Here is some of my code. Maybe someone knows how to deal with this prob!!!

self.positionX = [NSNumber numberWithFloat:(float)sqlite3_column_double(init_statement, 3)];
// other class:
imageButton.frame = CGRectMake(positionX , 100.0, 37.0, 37.0);  

The "linking" works just fine. But I get an error saying: "Incompatible type for argument.."

My types are:

• sqlite positionX as FLOAT
• postionX as CGFloat

Does someone have a solution for my problem???

Thanks!

Answer 1

您应该从NSNumber对象获取浮点值：

imageButton.frame = CGRectMake([positionX floatValue] , 100.0, 37.0, 37.0);