Oc 二维码的生成

本篇讲解如何生成二维码.我们生成二维码要先导入libqrencode第三方

1.制作二维码/*字符转二维码

导入 libqrencode文件

添加#import “QRCodeGenerator.h”

#import "QRCodeGenerator.h"@interface ViewController ()@property (strong , nonatomic) UIImageView* qRImageView;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    self.qRImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 400)];    [self.view addSubview:self.qRImageView];    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];    button.frame = CGRectMake(100, 200, 100, 50);    [button setTitle:@"扫描" forState:UIControlStateNormal];    [button addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button];}- (void)click{    self.qRImageView.image = [QRCodeGenerator qrImageForString:@"二维码存储的字符串信息 asddsdd" imageSize:self.qRImageView.bounds.size.width];}