iOS中 第三方LBXScan库二维码扫描

实现功能的话就是常见的二维码、条形码的扫描识别。该库都已将完全封装好了，可以直接使用。当然了也可以自己定制样式的。

1、首先需要
cocoaPods导入pod ‘LBXScan’, ‘~> 1.1.1’
在此不做过多介绍，如有需要手动导入，可自行上网搜索下载，将JQScan文件夹直接拖到你的工程中即可。

2、界面效果如下,可以扫描相册二维码,打开闪光灯,生成二维码。

3、界面和功能都集中在SubLBXScanViewController.m中，如需修改可直接修改。
二维码的生成在MyQRViewController.m

4、我在我工程首页的导航栏添加了扫描按钮

//扫描按钮
    UIButton *scannerBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [scannerBtn setImage:GetImage(@"icon_sao.png") forState:UIControlStateNormal];
    [scannerBtn addTarget:self action:@selector(scanner:) forControlEvents:UIControlEventTouchUpInside];
    [backView addSubview:scannerBtn];
    [scannerBtn mas_makeConstraints:^(MASConstraintMaker *make){
        make.size.mas_equalTo(CGSizeMake(16, 16));
        make.leftMargin.equalTo(@16);
        make.topMargin.equalTo(@36);

    }];

实现相应方法，更改扫描界面的布局样式

-(void)scanner:(id)sender
{
    //设置扫码区域参数设置

    //创建参数对象
    LBXScanViewStyle *style = [[LBXScanViewStyle alloc]init];

    //矩形区域中心上移，默认中心点为屏幕中心点
    style.centerUpOffset = 24;

    //扫码框周围4个角的类型,设置为外挂式
    style.photoframeAngleStyle = LBXScanViewPhotoframeAngleStyle_Outer;

    //扫码框周围4个角绘制的线条宽度
    style.photoframeLineW = 6;

    //扫码框周围4个角的宽度
    style.photoframeAngleW = 20;

    //扫码框周围4个角的高度
    style.photoframeAngleH = 20;
    style.colorAngle = [UIColor whiteColor];
    //扫码框内 动画类型 --线条上下移动
    style.anmiationStyle = LBXScanViewAnimationStyle_LineMove;

    //线条上下移动图片
//  style.animationImage = [UIImage imageNamed:@"CodeScan.bundle/qrcode_scan_light_green"];
    style.animationImage = GetImage(@"line_red");
    //SubLBXScanViewController继承自LBXScanViewController
    //添加一些扫码或相册结果处理
    BLHScanViewController *vc = [BLHScanViewController new];
    vc.style = style;

    vc.isQQSimulator = YES;
    vc.hidesBottomBarWhenPushed = YES;
    [self bPushViewController:vc animated:YES];
}

其中最后的这个方法就是在父类中写的push推出，再次我就不再更改。

[self bPushViewController:vc animated:YES];
}

父类方法如下：

#pragma mark - 自定义导航push和pop
- (void)bPushViewController:(UIViewController *)viewController animated:(BOOL)animated {
    [self.navigationController pushViewController:viewController animated:animated];
}

5、扫描显示页面的定制
BLHScanViewController

#import "LBXScanViewController.h"

@interface BLHScanViewController : LBXScanViewController
#pragma mark -模仿qq界面

@property (nonatomic, assign) BOOL isQQSimulator;

@property (nonatomic, strong) UIView *backView;
@property (nonatomic, strong) UIButton  *backBtn;
@property (nonatomic, strong) UIButton  *historyBtn;
@property (nonatomic, strong) UILabel   *titleLable;



#pragma mark - 底部几个功能：开启闪光灯、相册、我的二维码
//底部显示的功能项
@property (nonatomic, strong) UIView *bottomItemsView;
//相册
@property (nonatomic, strong) UIButton *btnPhoto;
//闪光灯
@property (nonatomic, strong) UIButton *btnFlash;
//我的二维码
@property (nonatomic, strong) UIButton *btnMyQR;
@end

//
//  BLHScanViewController.m
//  Bolaihui
//
//  Created by mac on 16/1/11.
//  Copyright © 2016年 Bolaihui. All rights reserved.
//

#import "BLHScanViewController.h"
#import "LBXScanResult.h"
#import "LBXScanWrapper.h"
#import "UIUtil.h"
#import "SIAlertView.h"

@interface BLHScanViewController ()

@end

@implementation BLHScanViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    if ([self respondsToSelector:@selector(setEdgesForExtendedLayout:)]) {

        self.edgesForExtendedLayout = UIRectEdgeNone;
    }

    self.view.backgroundColor = [UIColor blackColor];
}

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [self.navigationController setNavigationBarHidden:YES animated:YES];
}

-(void)viewWillDisappear:(BOOL)animated
{

    [super viewWillDisappear:animated];
    [self.navigationController setNavigationBarHidden:NO animated:YES];
}


- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [self drawCustomTitleView];

    if (_isQQSimulator) {

        [self drawBottomItems];
    }

}

-(void)clickLeftBtn:(id)sender
{
    [self.navigationController popViewControllerAnimated:YES];
}

-(void)clickHistoryBtn:(id)sender
{

}

-(void)drawCustomTitleView
{
    if (_backView) {

        return;
    }

    _backView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 66)];
    [self.view addSubview:_backView];

    //返回按钮
    _backBtn= [UIButton buttonWithType:UIButtonTypeCustom];
    _backBtn.frame = CGRectMake(16, 26, 33, 33);
    [_backBtn setImage:GetImage(@"icon_top_left.png") forState:UIControlStateNormal];
    [_backBtn addTarget:self action:@selector(clickLeftBtn:) forControlEvents:UIControlEventTouchUpInside];
    [_backView addSubview:_backBtn];

//扫描历史
    _historyBtn= [UIButton buttonWithType:UIButtonTypeCustom];
    _historyBtn.frame = CGRectMake(SCREEN_WIDTH-16-33, 26, 33, 33);
    [_historyBtn setImage:GetImage(@"icon_top_history.png") forState:UIControlStateNormal];
    [_historyBtn addTarget:self action:@selector(clickHistoryBtn:) forControlEvents:UIControlEventTouchUpInside];
    [_backView addSubview:_historyBtn];


    _titleLable = [[UILabel alloc] initWithFrame:CGRectMake(CGRectGetMaxX(_backBtn.frame)+5, 26, CGRectGetMinX(_historyBtn.frame) - 5 - 5 - CGRectGetMaxX(_backBtn.frame), 33)];
    _titleLable.textAlignment = NSTextAlignmentCenter;
    _titleLable.backgroundColor = [UIColor clearColor];
    _titleLable.text = @"二维码/条形码";
    _titleLable.textColor = [UIColor whiteColor];
    _titleLable.font = GetFont(16.0f);
    [_backView addSubview:_titleLable];
}

//底部功能添加：闪光灯
- (void)drawBottomItems
{
    if (_bottomItemsView) {

        return;
    }

    self.bottomItemsView = [[UIView alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(self.view.frame)-111-48,
                                                                   CGRectGetWidth(self.view.frame), 111+48)];

    [self.view addSubview:_bottomItemsView];
    self.btnFlash = [[UIButton alloc]init];
    [_btnFlash setFrame:CGRectMake((self.view.frame.size.width - 48)/2, 0, 48, 48)];
    [_btnFlash setImage:GetImage(@"icon_lights_a") forState:UIControlStateNormal];
    [_btnFlash addTarget:self action:@selector(openOrCloseFlash) forControlEvents:UIControlEventTouchUpInside];

    [_bottomItemsView addSubview:_btnFlash];
}

//扫描结果
- (void)scanResultWithArray:(NSArray*)array
{

    if (array.count < 1)
    {
        [self popAlertMsgWithScanResult:nil];

        return;
    }

    //经测试，可以同时识别2个二维码，不能同时识别二维码和条形码
    for (LBXScanResult *result in array) {

        NSLog(@"scanResult:%@",result.strScanned);
    }

    LBXScanResult *scanResult = array[0];

    NSString*strResult = scanResult.strScanned;

    self.scanImage = scanResult.imgScanned;

    if (!strResult) {

        [self popAlertMsgWithScanResult:nil];

        return;
    }

    //震动提醒
    [LBXScanWrapper systemVibrate];
    //声音提醒
    [LBXScanWrapper systemSound];


    [self popAlertMsgWithScanResult:strResult];

//  [self showNextVCWithScanResult:scanResult];

}

//扫描结果
- (void)popAlertMsgWithScanResult:(NSString*)strResult
{
    if (!strResult) {

        strResult = @"识别失败";
    }

    __weak __typeof(self) weakSelf = self;

    SIAlertView *alertView = [[SIAlertView alloc] initWithTitle:@"扫码内容" andMessage:strResult];
    [alertView addButtonWithTitle:BoLocalizedString(@"confirm") type:SIAlertViewButtonTypeDefault handler:^(SIAlertView *alertView){
        [weakSelf reStartDevice];
    }];

    [alertView show];
    [UIUtil addAlertDefault:alertView];
}

- (void)showNextVCWithScanResult:(LBXScanResult*)strResult
{
//  ScanResultViewController *vc = [ScanResultViewController new];
//  vc.imgScan = strResult.imgScanned;
//  
//  vc.strScan = strResult.strScanned;
//  
//  vc.strCodeType = strResult.strBarCodeType;
//  
//  [self.navigationController pushViewController:vc animated:YES];
}


#pragma mark -底部功能项
//开关闪光灯
- (void)openOrCloseFlash
{

    [super openOrCloseFlash];


    if (self.isOpenFlash)
    {
        [_btnFlash setImage:GetImage(@"icon_lights_b") forState:UIControlStateNormal];
    }
    else
        [_btnFlash setImage:GetImage(@"icon_lights_a") forState:UIControlStateNormal];
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end