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如何正确地将NSString转换为xcode 3.2中的双精度型?这是我的代码(缩写),但是当我运行它时,消息说(空)。我究竟做错了什么?非常感谢!字符串双击疑难解答
@synthesize class1sem1;
-(IBAction)buttonPressed
{
NSString *myString = class1sem1.text;
double myDouble = [myString doubleValue];
NSString *message = [[NSString alloc] initWithFormat:
@"%@", myDouble];
UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"Result" message:message delegate:nil cancelButtonTitle:@"Great!" otherButtonTitles:nil];
[alert show];
[alert release];
[message release];
}
谢谢!这样简单的解决方案! –