IOS基础控件--Button

一、拖拽控件法

拖拽添加一个Button Type 为custom，分别设置State config分别为Default, highlighted, selected.并分别选择Background为image全称。

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (nonatomic, strong) IBOutlet UIButton *btn;

@end

.m文件中
- (IBAction)btnSelected:(id)sender
{
    UIButton *btn = (UIButton *)sender;
    btn.selected = YES;
}

完成操作

二、手写代码法

//宏定义文件
#ifndef Globaldefine_h
#define Globaldefine_h

#define SCREENWIDTH [[UIScreen mainScreen] bounds].size.width
#define SCREENHEIGHT [[UIScreen mainScreen] bounds].size.height

#endif /* Globaldefine_h */


//视图控制器.h文件
#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (nonatomic, strong) IBOutlet UIButton *btn;

@end

#import "ViewController.h"
#import "Globaldefine.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    _btn = [UIButton buttonWithType:UIButtonTypeCustom];//按钮状态
    _btn.frame = CGRectMake(SCREENWIDTH / 2 - 30, SCREENHEIGHT / 2 - 30, 60, 60);//设置按钮位置和大小
    [_btn setBackgroundImage:[UIImage imageNamed:@"xmh.png"] forState:UIControlStateNormal];
     [_btn setBackgroundImage:[UIImage imageNamed:@"wdh.png"] forState:UIControlStateHighlighted];
     [_btn setBackgroundImage:[UIImage imageNamed:@"syh.png"] forState:UIControlStateSelected];
    [self.view addSubview:_btn];
    
    
    [_btn addTarget:self action:@selector(btnSelected:) forControlEvents:UIControlEventTouchUpInside];//@selector(btnSelected:)冒号就是把_btn传过去
}
- (void)btnSelected:(UIButton *)btn
{
    if (btn.selected)
    {
        btn.selected = NO;
    }
    else
    {
        btn.selected = YES;
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end