iOS Development-image browser (optimized)

//

VIEWCONTROLLER.M

19- Picture Browser

//

Created by Hongqiangli on 2017/7/31.

Copyright Letter and Huimin Investment Management (Beijing) Co., Ltd. All rights reserved.

//

#import "ViewController.h"

@interface viewcontroller ()

/**

record the current index number

*/

@property(nonatomic,assign)int index;

/**

the previous one

*/

-(ibaction) previous;

/**

Next One

*/

-(ibaction) next;

/**

Description

*/

@property (weak, nonatomic) iboutlet UILabel *desclabel;

/**

Previous Button

*/

@property (weak, nonatomic) iboutlet UIButton *previousbtn;

/**

Next button

*/

@property (weak, nonatomic) iboutlet UIButton *nextbtn;

/**

Index label

*/

@property (weak, nonatomic) iboutlet UILabel *nolabel;

@property (weak, nonatomic) iboutlet uiimageview *mainimageview;

@end

@implementation Viewcontroller

-(void) viewdidload {

[Super viewdidload];

[self changdata];

}

/**

Click on the previous one

*/

-(ibaction) Previous {

_index--;

[self changdata];

}

/**

Next One

*/

-(ibaction) Next {

_index+ +;

[self changdata];

}

-(void) changdata{

Switch (_index) {

case 0:

_nolabel. Text = @ "1/5";

_mainimageview. Image = [UIImage imagenamed:@ "Biaoqingdi"];

_desclabel. Text = @ " in front of him, other expressions are weak !" ;

break;

case 1:

_nolabel. Text = @ "2/5";

_mainimageview. Image = [UIImage imagenamed:@ "Wangba"];

_desclabel. Text = @ " Brother why Choose number Eighth ";

break;

case 2:

_nolabel. Text = @ "3/5";

_mainimageview. Image = [UIImage imagenamed:@ "Bingli"];

_desclabel. Text = @ " This is also cruel ";

break;

Case 3:

_nolabel. Text = @ "4/5";

_mainimageview. Image = [UIImage imagenamed:@ "Chiniupa"];

_desclabel. Text = @ " this little girl eats a bull and kills cows. "

break;

Case 4:

_nolabel. Text = @ "5/5";

_mainimageview. Image = [UIImage imagenamed:@ "Danteng"];

_desclabel. Text = @ " Pro, can you change your network name?" Haha ";

break;

default:

break;

}

// judgment button can not click

_previousbtn. Enabled = (_index! = 0);

_nextbtn. Enabled = (_index! = 4);

}

@end

iOS Development-image browser (optimized)