button状态

Posted 2020-06-25 liuzhenjie

/*

 一、按钮的状态

 1.UIControlStateNormal

 1> 除开UIControlStateHighlighted、UIControlStateDisabled、UIControlStateSelected以外的其他情况，都是normal状态

 2> 这种状态下的按钮【可以】接收点击事件

 

 2.UIControlStateHighlighted

 1> 【当按住按钮不松开】或者【highlighted = YES】时就能达到这种状态

 2> 这种状态下的按钮【可以】接收点击事件

 

 3.UIControlStateDisabled

 1> 【button.enabled = NO】时就能达到这种状态

 2> 这种状态下的按钮【无法】接收点击事件

 

 4.UIControlStateSelected

 1> 【button.selected = YES】时就能达到这种状态

 2> 这种状态下的按钮【可以】接收点击事件

 

 二、让按钮无法点击的2种方法

 1> button.enabled = NO;

 *【会】进入UIControlStateDisabled状态

 

 2> button.userInteractionEnabled = NO; 

 *【不会】进入UIControlStateDisabled状态，继续保持当前状态

 

 */

 

#import "ViewController.h"

#import "LZJButton.h"

 

@interface ViewController ()

/** 按钮 */

@property (nonatomic, weak) LZJButton *button;

@end

 

@implementation ViewController

 

- (void)viewDidLoad {

    [super viewDidLoad];

    

    LZJButton *button = [[LZJButton alloc] init];

    [button setTitle:@"我是按钮" forState:UIControlStateNormal];

    [button setTitleColor:[UIColor redColor] forState:UIControlStateNormal];

    [button setTitleColor:[UIColor greenColor] forState:UIControlStateHighlighted];

    [button setTitleColor:[UIColor blueColor] forState:UIControlStateSelected];

    [button setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];

    button.frame = CGRectMake(100, 100, 100, 30);

    [button addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:button];

    self.button = button;

}

 

- (void)buttonClick {

    NSLog(@"%s", __func__);

}

 

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

{

    self.button.selected = YES;

//    self.button.highlighted = YES;

}

 ---------------------------------------

 

#import "LZJButton.h"

 

@implementation LZJButton

 

- (BOOL)isHighlighted

{

    return YES;

}

 

//- (void)setHighlighted:(BOOL)highlighted

//{

//    

//}

 

@end