一，效果图。
二，工程图。
三，代码。
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. //初始化背景图 [self addBackGroundView]; } #pragma -mark -functions //初始化背景图 -(void)addBackGroundView { //4个连着的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个按钮 -(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