【代碼筆記】iOS-4個可以單獨點擊的button

一，效果圖。

二，工程圖。

三，代碼。

ViewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    //初始化背景圖
    [self addBackGroundView];
    
}
#pragma -mark -functions
//初始化背景圖
-(void)addBackGroundView
{
    //4個連著的button
    for (int i=0; i<4; i++) {
        
        UIButton *chooseButton=[UIButton buttonWithType:UIButtonTypeCustom];
        chooseButton.frame=CGRectMake(0+80*i,50, 80, 38);
        chooseButton.tag=i;
        if (i==0) {
            [chooseButton setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_getno1"] forState:UIControlStateNormal];
        }else if (i==1){
            [chooseButton setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_getyes1"] forState:UIControlStateNormal];
        }else if (i==2){
            [chooseButton setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_workno1"] forState:UIControlStateNormal];
        }else if (i==3){
            [chooseButton setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_workyes1"] forState:UIControlStateNormal];
        }
        [chooseButton setBackgroundColor:[UIColor clearColor]];
        [chooseButton addTarget:self action:@selector(doClickChooseButton:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:chooseButton];
        
    }

}
#pragma -mark -doClickActions
//4個按鈕
-(void)doClickChooseButton:(UIButton *)btn
{
    NSLog(@"---doClickChooseButton--");
    if (btn.tag==0) {
        if (btn.selected==NO) {
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_getno2"] forState:UIControlStateNormal];
            btn.selected=YES;
        }else{
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_getno1"] forState:UIControlStateNormal];
            btn.selected=NO;
        }
        
    }else if (btn.tag==1){
        if (btn.selected==NO) {
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_getyes2"] forState:UIControlStateNormal];
            btn.selected=YES;
        }else{
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_getyes1"] forState:UIControlStateNormal];
            btn.selected=NO;
        }
        
    }else if (btn.tag==2){
        if (btn.selected==NO) {
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_workno2"] forState:UIControlStateNormal];
            btn.selected=YES;
        }else{
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_workno1"] forState:UIControlStateNormal];
            btn.selected=NO;
        }
        
    }else if (btn.tag==3){
        if (btn.selected==NO) {
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_workyes2"] forState:UIControlStateNormal];
            btn.selected=YES;
        }else{
            [btn setBackgroundImage:[UIImage imageNamed:@"shoplist_tab_workyes1"] forState:UIControlStateNormal];
            btn.selected=NO;
        }
        
    }
    
}


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

@end