ios学习-制作一个浏览图片的Demo

//
//  ViewController.h
//  图片浏览器
//
//  Created by yongjianyu on 15/12/1.
//  Copyright (c) 2015年 yongjianyu. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@property (weak, nonatomic) IBOutlet UILabel *imageNum;

@property (weak, nonatomic) IBOutlet UILabel *imageDesc;

@property (weak, nonatomic) IBOutlet UIView *settingView;

- (IBAction)setting;

- (IBAction)nightModel:(UISwitch *)sender;

- (IBAction)imageSizeChange:(UISlider *)sender;

@end

//
//  ViewController.m
//  图片浏览器
//
//  Created by yongjianyu on 15/12/1.
//  Copyright (c) 2015年 yongjianyu. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController


- (IBAction)sliderValueChanged:(UISlider *)sender {
    
    //1.设置中间的图片
    NSString *imageName = [NSString stringWithFormat:@"%.f.jpg",sender.value];
    _imageView.image = [UIImage imageNamed:imageName];
    //2.设置序号
    _imageNum.text = [NSString stringWithFormat:@"%.f/8",sender.value];
    
      
    //3.设置描述
    NSBundle *bundle = [NSBundle mainBundle];
    NSString *path = [bundle pathForResource:@"descr" ofType:@"plist"];
//    NSLog(@"%@",path);
    NSArray *allDescs = [NSArray arrayWithContentsOfFile:path];
//    NSLog(@"%@",allDescs);
    int no = (int)sender.value - 1;
    _imageDesc.text = allDescs[no];
    
}
- (IBAction)setting {
    
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1.0];
    CGPoint tempCenter = _settingView.center;
    if (_settingView.frame.origin.y == self.view.frame.size.height) {
        tempCenter.y -= _settingView.frame.size.height;
    }else{
        tempCenter.y += _settingView.frame.size.height;
    }
    
    _settingView.center = tempCenter;
    [UIView commitAnimations];
}
- (IBAction)nightModel:(UISwitch *)sender {
    
    if (sender.on) {
        self.view.backgroundColor = [UIColor grayColor];
    }else{
        self.view.backgroundColor = [UIColor whiteColor];
    }
}

- (IBAction)imageSizeChange:(UISlider *)sender {
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1.0];
    _imageView.transform = CGAffineTransformMakeScale(sender.value, sender.value);
    [UIView commitAnimations];
    
}
@end