ZXingObjC 開源框架 生成二維碼

//

//  ViewController.m

//  ZXing

//

//  Created by 崔曉宇 on 16/1/4.

//  Copyright © 2016年 崔曉宇. All rights reserved.

//

#import "ViewController.h"

#import <ZXingObjC/ZXingObjC.h>

@interface ViewController ()

{

    UIImage *imageResult;

}

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    

    [self encoding];

    [self decoding];

}

//Quick Response Code

#pragma mark 編碼

- (void)encoding{

    NSError *error = nil;

    ZXMultiFormatWriter *writer = [ZXMultiFormatWriter writer];

    ZXBitMatrix* result = [writer encode:@"http://www.sina.com.cn"format:kBarcodeFormatQRCode width:500 height:500 error:&error];//這裏寫想要跳轉的網址

    if (result) {

        CGImageRef image = [[ZXImage imageWithMatrix:result] cgimage];

        

        // This CGImageRef image can be placed in a UIImage, NSImage, or written to a file.

        imageResult = [UIImage imageWithCGImage:image];

        UIImageView *result = [[UIImageView alloc]initWithFrame:CGRectMake(20, 20, 345, 345)];

        result.image = imageResult;

        [self.view addSubview:result];

    } else {

        NSString *errorMessage = [error localizedDescription];

        NSLog(@"出錯：%@",errorMessage);

    }

}

#pragma mark 解碼

- (void)decoding{

    CGImageRef imageToDecode = [imageResult CGImage];  // Given a CGImage in which we are looking for barcodes

    

    ZXLuminanceSource *source = [[ZXCGImageLuminanceSource alloc] initWithCGImage:imageToDecode];

    ZXBinaryBitmap *bitmap = [ZXBinaryBitmap binaryBitmapWithBinarizer:[ZXHybridBinarizer binarizerWithSource:source]];

    

    NSError *error = nil;

    

    // There are a number of hints we can give to the reader, including

    // possible formats, allowed lengths, and the string encoding.

    ZXDecodeHints *hints = [ZXDecodeHints hints];

    

    ZXMultiFormatReader *reader = [ZXMultiFormatReader reader];

    ZXResult *result = [reader decode:bitmap hints:hints error:&error];

    if (result) {

        // The coded result as a string. The raw data can be accessed with

        // result.rawBytes and result.length.

        NSString *contents = result.text;

        NSLog(@"二維碼結果：%@",contents);

        // The barcode format, such as a QR code or UPC-A

        ZXBarcodeFormat format = result.barcodeFormat;

        NSLog(@"該碼格式爲：%u", format);

    } else {

        // Use error to determine why we didn't get a result, such as a barcode

        // not being found, an invalid checksum, or a format inconsistency.

    }

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end