you cannot have method inside another method.
this is part of your code
//add object button
UIButton *plus = [UIButton buttonWithType:UIButtonTypeCustom];
[plus setBackgroundImage:[UIImage imageNamed:@"plus.png"]forState:UIControlStateNormal];
plus.frame = CGRectMake(394, 106, 25, 25);
[plus setTitle:@"" forState:UIControlStateNormal];
[objects addSubview:plus];
plus.adjustsImageWhenHighlighted = YES;
-(void)viewDidLoad {
[super viewDidLoad];
UIButton *add = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[add addTarget:self action:@selector(aMethod:)forControlEvents:UIControlEventTouchDown];
[add setTitle:@"add new" forState:UIControlStateNormal];
add.frame = CGRectMake(100, 100, 100, 100);
[self.view addSubview:add];
}
- (void) aMethod:(id)sender {
button[0].backgroundColor = [UIColor greenColor];
}
} // <----this should not be here
change it to
//add object button
UIButton *plus = [UIButton buttonWithType:UIButtonTypeCustom];
[plus setBackgroundImage:[UIImage imageNamed:@"plus.png"]forState:UIControlStateNormal];
plus.frame = CGRectMake(394, 106, 25, 25);
[plus setTitle:@"" forState:UIControlStateNormal];
[objects addSubview:plus];
plus.adjustsImageWhenHighlighted = YES;
} // <--- should be here to end method
-(void)viewDidLoad {
[super viewDidLoad];
UIButton *add = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[add addTarget:self action:@selector(aMethod:)forControlEvents:UIControlEventTouchDown];
[add setTitle:@"add new" forState:UIControlStateNormal];
add.frame = CGRectMake(100, 100, 100, 100);
[self.view addSubview:add];
}
- (void) aMethod:(id)sender {
button[0].backgroundColor = [UIColor greenColor];
}