I have a 2.67 GHz Celeron processor, 1.21 GB of RAM on a x86 Windows XP Professional machine. My understanding is that the Android emulator should start fairly quickly on such a machine, but for me it does not. I have followed all instructions in setting up the IDE, SDKs, JDKs and such and have had some success in staring the emulator quickly but is very particulary. How can I, if possible, fix this problem?
The UILabel (I will assume you use it) takes a NString to be displayed. You need to add the numbers first and then make the string that can be added to the label.
ReplyDeletemyLabel.text = [NSString stringWithFormat:@"%d", originalValue + diff];
I'm not sure what exactly you want but here's my guess:
ReplyDeleteYou have a variable that keeps a score on an UILabel object, and you need to add or subtract this value depending on some type of action.
This is how I would do it:
@interface Scoreboard : NSObject {
IBOutlet UILabel *label;
int counter;
}
- (IBAction)addToCounter;
- (IBAction)subtractToCounter;
- (void)updateLabel;
@end
@implementation Scoreboard
- (IBAction)addToCounter {
counter++;
[self updateLabel];
}
- (IBAction)subtractToCounter {
counter--;
[self updateLabel];
}
- (void)updateLabel {
label.text = [NSString stringWithFormat:@"Score = %i", counter];
}
@end
I just wrote this from memory but I don't think there is any errors. I hope that helps you. Good luck!