- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.            UITextField *textField=[[UITextField alloc]initWithFrame:CGRectMake(10, 100, 200, 200)];    textField.backgroundColor=[UIColor redColor];    [self.view addSubview:textField];    }//第一種收起鍵盤的方法-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    [self.view endEditing:YES];}//第二種收起鍵盤的方法-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    [[UIapplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];}//第三種收起鍵盤的方法-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    [[[UIApplication sharedApplication] keyWindow] endEditing:YES];}