设置button的selected状态下image和title的时候,要注意,本身对按钮的点击是不会改变selected状态的,需要我们在按钮的监听方法里去对这个值设置,才会触发到不同状态下
下面代码是通过button做的一个简易的复选框
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)loadView{
self.view = [[UIView alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake((self.view.bounds.size.width-180)/2, (self.view.bounds.size.height-44)/2, 180, 44)];
//normal
[button setImage:[UIImage imageNamed:[NSString stringWithFormat:@"login_checkbox_normal.png"]] forState:UIControlStateNormal];
[button setTitle:@"点我啊" forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont systemFontOfSize:17]];
[button addTarget:self action:@selector(tapButton:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
}
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
#pragma mark - 按钮点击事件
- (void)tapButton:(UIButton *)button{
[button setSelected:!button.isSelected];
if (button.isSelected) {
//selected
[button setImage:[UIImage imageNamed:[NSString stringWithFormat:@"login_checkbox_checked.png"]] forState:UIControlStateSelected];
[button setTitle:@"卧槽你真点" forState:UIControlStateSelected];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateSelected];
[button.titleLabel setFont:[UIFont systemFontOfSize:17]];
}else{
//normal
[button setImage:[UIImage imageNamed:[NSString stringWithFormat:@"login_checkbox_normal.png"]] forState:UIControlStateNormal];
[button setTitle:@"点我啊" forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont systemFontOfSize:17]];
}
}
@end