这是我的一段以编程方式创建按钮的代码：
NSArray *buttonImage=[NSArray arrayWithObjects:[UIImage imageNamed:@"Cover_0.png"],[UIImage imageNamed:@"Cover_1.png"],[UIImage imageNamed:@"Cover_2.png"],[UIImage imageNamed:@"Cover_3.png"],[UIImage imageNamed:@"Cover_4.png"],[UIImage imageNamed:@"Cover_5.png"],[UIImage imageNamed:@"Cover_6.png"],[UIImage imageNamed:@"Cover_7.png"],nil]; UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; button.frame = CGRectMake(0,200.0f,200.0f); [button setTitle:[NSString stringWithFormat:@"%i",index] forState:UIControlStateNormal]; [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; button.titleLabel.font = [button.titleLabel.font fontWithSize:50]; [button setImage:buttonImage forState:UIControlStateNormal]; [button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside]; return button;
但是在运行它时我无法进入模拟器并且它会抛出一个Signal Sigabart错误.
有人可以帮忙吗？
解决方法
要使用选择器数组以编程方式创建按钮,您可以使用以下代码片段：
//定义策略
@interface DataItemStrategy : NSObject
@property(nonatomic,assign) SEL someSelector;
@end
@implementation DataItemStrategy
@synthesize someSelector = _someSelector;
-(id)initWithSelector:(SEL)someSelector
{
self = [super init];
if (self)
{
self.someSelector = someSelector;
}
return self;
}
@end
-(void)createButtons
{
NSArray *buttonImages =[NSArray arrayWithObjects:[UIImage imageNamed:@"Cover_0.png"],nil];
NSArray *dataStrategies = [NSArray arrayWithObjects:
[[[DataItemStrategy alloc] initWithSelector:@selector(buttonAction0:)] autorelease],[[[DataItemStrategy alloc] initWithSelector:@selector(buttonAction1:)] autorelease],[[[DataItemStrategy alloc] initWithSelector:@selector(buttonAction2:)] autorelease],nil];
CGRect buttonFrame = CGRectMake(0,50,50);
for (NSInteger i = 0; i < [buttonImages count]; i++)
{
buttonFrame.origin.y += 50;
UIImage *buttonImage = [buttonImages objectAtIndex:i];
DataItemStrategy *dataStrategie = [dataStrategies objectAtIndex:i];
NSString *title = [NSString stringWithFormat:@"%d",i];
UIButton *button = [self buttonWithFrame:buttonFrame image:buttonImage action:dataStrategie.someSelector title:title];
[self.view addSubview:button];
}
}
-(UIButton *)buttonWithFrame:(CGRect)buttonFrame image:(UIImage *)buttonImage action:(SEL)buttonAction title:(NSString *)title
{
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = buttonFrame;
[button setTitle:title forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
button.titleLabel.font = [button.titleLabel.font fontWithSize:50];
[button setImage:buttonImage forState:UIControlStateNormal];
[button addTarget:self action:buttonAction forControlEvents:UIControlEventTouchUpInside];
return button;
}
