iOS空间使用之UISwitch

1、.h

#import <UIKit/UIKit.h>@interface ViewController : UIViewController- (IBAction)backChange:(id)sender;@end

2、.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.}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}- (IBAction)backChange:(id)sender {    if ([sender isOn] == YES) {        self.view.backgroundColor = [UIColor whiteColor];    }else{        self.view.backgroundColor = [UIColor blackColor];    }}@end