iOS—UI-手势及控件（segment switch slider）的使用

//

//  ViewController.m

//  UI-手势及控件练习

//

//  Created by jzq_mac on 15/7/24.

//  Copyright (c) 2015年 jzq_mac. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

{

    UIImageView *image;

    UIImageView *image1;

    UILabel *label;

    NSArray *colorList ;

    NSArray *imgeList ;

    UISlider *slider ;

}

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    self.view.backgroundColor = [UIColor grayColor];

    colorList = @[[UIColor blueColor],[UIColor brownColor],[UIColor yellowColor],[UIColor grayColor],[UIColor blackColor],[UIColor purpleColor],[UIColor whiteColor],[UIColor cyanColor]];

    imgeList = @[[UIImage imageNamed:@"头条1.jpg"],[UIImage imageNamed:@"娱乐1.jpg"],[UIImage imageNamed:@"科技1.jpg"],[UIImage imageNamed:@"財经1.jpg"],[UIImage imageNamed:@"军事1.jpg"],[UIImage imageNamed:@"段子1.jpg"]];

    image1 = [[UIImageView alloc]initWithFrame:[UIScreen mainScreen].bounds];

    image1.alpha = 0.3;

    [self.view addSubview:image1];

    label = [[UILabel alloc]initWithFrame:CGRectMake(60, 300, 250, 50)];

    label.text = @"