iOS 開發之 ZBarSDK 二維碼掃描自訂二維碼掃描頁面(二)

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iOS 開發之 ZBarSDK 二維碼掃描自訂二維碼掃描頁面(二)

 

上一篇解決了ZBarSDK不支援64bit的問題，下面我們就可以使用ZBarSDK了。

 

匯入ZBarSDk.h檔案

 

附上代碼：

 

//

//  MeViewController.m

//  Auditory Blog

//

//  Created by 寒竹子 on 15/4/28.

//  Copyright (c) 2015年 寒竹子. All rights reserved.

//

 

#define ScanWidth  220

#define ScanHeight 220

 

#import "MeViewController.h"

#import "ZBarSDK.h"

 

@interface MeViewController ()<ZBarReaderDelegate>

@property (nonatomic, strong) UIImageView * imageView;

@property (nonatomic, strong) UIView * scanLine; // 掃描器

@property (nonatomic, strong) NSTimer * timer;

 

@end

 

@implementation MeViewController

 

/**

 * @brief  初始化UI

 *

 * @param

 * @return

 */

- (void)setupUI

{

    self.view.backgroundColor = RGB(248, 248, 248, 1.0f);

    UIButton * scanBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 200, self.view.frame.size.width, 30)];

    [scanBtn setTitle:@"掃描二維碼" forState:UIControlStateNormal];

    scanBtn.titleLabel.font = TextFont(16.0f);

    [scanBtn setTitleColor:RGB(10, 10, 10, 1.0f) forState:UIControlStateNormal];

    [scanBtn addTarget:self action:@selector(scanAction) forControlEvents:UIControlEventTouchUpInside];

    

    [self.view addSubview:scanBtn];

    

    _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(20, 300, 200, 100)];

    [self.view addSubview:_imageView];

}

 

/**

 * @brief  起一個定時器

 *

 * @param

 * @return

 */

- (void)startTimer

{

    _timer = [NSTimer scheduledTimerWithTimeInterval:.02f target:self selector:@selector(updateScanLine) userInfo:nil repeats:YES];

    [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];

}

 

/**

 * @brief  停止定時器

 *

 * @param

 * @return

 */

- (void)stopTimer

{

    if ([_timer isValid]) {

        [_timer invalidate];

        _timer = nil;

    }

}

 

/**

 * @brief  掃描二維碼

 *

 * @param

 * @return

 */

- (void)scanAction

{

    ZBarReaderViewController * readerVc = [[ZBarReaderViewController alloc] init];

    readerVc.readerDelegate = self;

    

    // 非全屏

    readerVc.wantsFullScreenLayout = NO;

    

    // 隱藏底部控制按鈕

    readerVc.showsZBarControls = NO;

    

    // 設定自己定義的介面

    [self setOverlayPickerView:readerVc];

    

    ZBarImageScanner * scanner = readerVc.scanner;

    [scanner setSymbology:ZBAR_I25 config:ZBAR_CFG_ENABLE to:0];

    

    [self presentViewController:readerVc animated:YES completion:nil];

    [self startTimer];

}

 

- (void)setOverlayPickerView:(ZBarReaderViewController *)readerVc

{

    // 清除原有的控制項

    for (UIView * temp in [readerVc.view subviews]) {

        for (UIButton * btn in [temp subviews]) {

            if ([btn isKindOfClass:[UIButton class]]) {

                [btn removeFromSuperview];

            }

        }

        

        for (UIToolbar * toolBar in [temp subviews]) {

            if ([toolBar isKindOfClass:[UIToolbar class]]) {

                [toolBar setHidden:YES];

                

                [toolBar removeFromSuperview];

            }

        }

    }

    

    // 畫中間的基準線

    _scanLine = [[UIView alloc] initWithFrame:CGRectMake((self.view.frame.size.width - ScanWidth) / 2.0f, (self.view.frame.size.height - ScanHeight) / 2.0f, ScanWidth, 1)];

    _scanLine.backgroundColor = [UIColor redColor];

    

    [readerVc.view addSubview:_scanLine];

    

    // 最上部的View

    UIView * upView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, (self.view.frame.size.height - ScanHeight) / 2.0f)];

    upView.alpha = .4f;

    upView.backgroundColor = [UIColor blackColor];

    

    [readerVc.view addSubview:upView];

    

    // 用於說明的label

    UILabel * infoLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, self.view.frame.size.width - 40, 60)];

    infoLabel.backgroundColor = [UIColor clearColor];

    infoLabel.numberOfLines = 2;

    infoLabel.font = TextFont(15.0f);

    infoLabel.textColor = [UIColor whiteColor];

    infoLabel.text = @"將二維碼置於矩形方框內，離手機網路攝影機10CM左右，系統會自動識別。";

    [upView addSubview:infoLabel];

    

    // 左側的view

    

    UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, CGRectGetMaxY(upView.frame), (self.view.frame.size.width - ScanWidth) / 2.0f, ScanHeight)];

    

    leftView.alpha = 0.4;

    

    leftView.backgroundColor = [UIColor blackColor];

    

    [readerVc.view addSubview:leftView];

    

    // 右側的view

    

    UIView *rightView = [[UIView alloc] initWithFrame:CGRectMake(CGRectGetMaxX(leftView.frame) + ScanWidth, leftView.frame.origin.y, (self.view.frame.size.width - ScanWidth) / 2.0f, ScanHeight)];

    

    rightView.alpha = 0.4;

    

    rightView.backgroundColor = [UIColor blackColor];

    

    [readerVc.view addSubview:rightView];

    

    //底部view

    

    UIView * downView = [[UIView alloc] initWithFrame:CGRectMake(0, CGRectGetMaxY(leftView.frame), self.view.frame.size.width, self.view.frame.size.height - CGRectGetMaxY(leftView.frame))];

    

    downView.alpha = 0.4;

    

    downView.backgroundColor = [UIColor blackColor];

    

    [readerVc.view addSubview:downView];

    

    // 取消操作的按鈕

    UIButton * cancelBtn = [[UIButton alloc] initWithFrame:CGRectMake((self.view.frame.size.width - 55) / 2.0f, 30, 70, 70.0f)];

    [cancelBtn setImage:[UIImage imageNamed:@"close"] forState:UIControlStateNormal];

    [cancelBtn addTarget:self action:@selector(closeAction) forControlEvents:UIControlEventTouchUpInside];

    [downView addSubview:cancelBtn];

}

 

/**

 * @brief  更新掃描

 *

 * @param

 * @return

 */

- (void)updateScanLine

{

    [UIView animateWithDuration:.01f animations:^{

        CGFloat currentY = _scanLine.frame.origin.y;

        if (currentY >= (self.view.frame.size.height - ScanHeight) / 2.0f + ScanHeight) {

            currentY = (self.view.frame.size.height - ScanHeight) / 2.0f;

        }else {

            currentY += 1.0f;

        }

        

        CGRect frame = _scanLine.frame;

        frame.origin.y = currentY;

        _scanLine.frame = frame;

    } completion:nil];

 

}

 

/**

 * @brief  關閉掃描頁面

 *

 * @param

 * @return

 */

- (void)closeAction

{

    [self stopTimer];

    [self dismissViewControllerAnimated:YES completion:nil];

}

 

- (void)viewDidLoad {

    [super viewDidLoad];

    

    [self setupUI];

}

 

#pragma mark ZBarSDKDelegate

 

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    id<NSFastEnumeration> results = [info objectForKey:ZBarReaderControllerResults];

    ZBarSymbol * symbol;

    for(symbol in results)

        break;

    

    _imageView.image = [info objectForKey:UIImagePickerControllerOriginalImage];

    [self stopTimer];

    [picker dismissViewControllerAnimated:YES completion:nil];

    

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:symbol.data]];

}

 

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

 

}

 

@end

 

至此ZBarSDK已經講解完畢。

iOS 開發之 ZBarSDK 二維碼掃描自訂二維碼掃描頁面(二)