iOS笔记UI--UIStepper

//
//  ViewController.m
//  2015-9-28
//
//  Created by hhg on 15/9/28.
//  Copyright (c) 2015年 hhg. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    UIStepper *stepper = [[UIStepper alloc]initWithFrame:CGRectMake(100, 100, 100, 30)];
    [self.view addSubview:stepper];
    [stepper setBackgroundColor:[UIColor redColor]];
    [stepper setTintColor:[UIColor blackColor]]; // 边框颜色
    stepper.stepValue = 0.1;                     // 增量
    [stepper setValue:2.3];                      // 默认值
    stepper.wraps = YES;                         // 循环
    [stepper setMaximumValue:3.3];
    [stepper addTarget:self action:@selector(stepper:) forControlEvents:UIControlEventValueChanged];
    // 修改默认值

}

-(void)stepper:(UIStepper *)stepper {
    NSLog(@"Stepper.value =  %.2f",stepper.value);
}
@end