cocos2dx-lua在ios上实现生成及扫描二维码
首先说明下，我是支持用ios原生方法实现的。不过扫描二维码原生方法不支持ios7.0之前的设备，所以生成二维码用的原生方法实现，而扫描二维码用zBar sdk实现的(当然也可以用google官方的zXing sdk)。其中zBar中包含生成二维码的方法，而且更多样，我只是喜欢尽量用原生方法来实现。
这里我把所有生成二维码的代码和lua调用的扫描二维码方法都放在了项目->frameworks->runtime-src->proj.ios_mac->ios->AppController.h和AppController.mm中
而zBar sdk及相关类放到了 项目->frameworks->runtime-src->proj.ios_mac->ios下。
-----1.原生生成二维码
------------1.1AppController.h中添加代码：
//生成二维码
+(CIImage *) creatQRcodeWithUrlstring:(NSString *)urlString;
//改变图片大小 (正方形图片)
+ (UIImage *)changeImageSizeWithCIImage:(CIImage *)ciImage andSize:(CGFloat)size;
//保存(暂时没用)
+(BOOL)writeImage:(UIImage*)image toFileAtPath:(NSString*)aPath;
//生成二维码
+(void)createQRCode:(NSDictionary *)info;/**
* 根据字符串生成二维码 CIImage 对象
*
* @param urlString 需要生成二维码的字符串
*
* @return 生成的二维码
*/
+ (CIImage *)creatQRcodeWithUrlstring:(NSString *)urlString{
// 1.实例化二维码滤镜
CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
// 2.恢复滤镜的默认属性 (因为滤镜有可能保存上一次的属性)
[filter setDefaults];
// 3.将字符串转换成NSdata
NSData *data = [urlString dataUsingEncoding:NSUTF8StringEncoding];
// 4.通过KVO设置滤镜, 传入data, 将来滤镜就知道要通过传入的数据生成二维码
[filter setValue:data forKey:@"inputMessage"];
// 5.生成二维码
CIImage *outputImage = [filter outputImage];
return outputImage;
}
/**
* 改变图片大小 (正方形图片)
*
* @param ciImage 需要改变大小的CIImage 对象的图片
* @param size 图片大小 (正方形图片 只需要一个数)
*
* @return 生成的目标图片
*/
+ (UIImage *)changeImageSizeWithCIImage:(CIImage *)ciImage andSize:(CGFloat)size{
CGRect extent = CGRectIntegral(ciImage.extent);
CGFloat scale = MIN(size/CGRectGetWidth(extent), size/CGRectGetHeight(extent));
// 创建bitmap;
size_t width = CGRectGetWidth(extent) * scale;
size_t height = CGRectGetHeight(extent) * scale;
CGColorSpaceRef cs = CGColorSpaceCreateDeviceGray();
CGContextRef bitmapRef = CGBitmapContextCreate(nil, width, height, 8, 0, cs, (CGBitmapInfo)kCGImageAlphaNone);
CIContext *context = [CIContext contextWithOptions:nil];
CGImageRef bitmapImage = [context createCGImage:ciImage fromRect:extent];
CGContextSetInterpolationQuality(bitmapRef, kCGInterpolationNone);
CGContextScaleCTM(bitmapRef, scale, scale);
CGContextDrawImage(bitmapRef, extent, bitmapImage);
// 保存bitmap到图片
CGImageRef scaledImage = CGBitmapContextCreateImage(bitmapRef);
CGContextRelease(bitmapRef);
CGImageRelease(bitmapImage);
return [UIImage imageWithCGImage:scaledImage];
}
+ (BOOL)writeImage:(UIImage*)image toFileAtPath:(NSString*)aPath
{
if ((image == nil) || (aPath == nil) || ([aPath isEqualToString:@""]))
return NO;
@try
{
NSData *imageData = nil;
NSString *ext = [aPath pathExtension];
if ([ext isEqualToString:@"png"])
{
imageData = UIImagePNGRepresentation(image);
}
else
{
// the rest, we write to jpeg
// 0. best, 1. lost. about compress.
imageData = UIImageJPEGRepresentation(image, 0);
}
if ((imageData == nil) || ([imageData length] <= 0))
return NO;
[imageData writeToFile:aPath atomically:YES];
return YES;
}
@catch (NSException *e)
{
NSLog(@"create thumbnail exception.");
}
return NO;
}
/*
* 项目-TARGETS-fightGame-mobile-Build Phases-Link Binary With Libraries添加CoreImage.framework
*/
+(void) createQRCode:(NSDictionary *)info
{
int _callBack = [[info objectForKey:@"listener"] intValue];
NSString *qrCodeStr = [info objectForKey:@"qrCodeStr"];
CIImage *ciImage = [self creatQRcodeWithUrlstring:qrCodeStr];
UIImage *uiImage = [self changeImageSizeWithCIImage:ciImage andSize:180];
NSData *imageData = UIImagePNGRepresentation(uiImage);
std::string path = cocos2d::FileUtils::getInstance()->getWritablePath() + "qrCode.png";
const char* pathC = path.c_str();
NSString * pathN = [NSString stringWithUTF8String:pathC];
bool isSuccess = [imageData writeToFile:pathN atomically:YES];
cocos2d::LuaBridge::pushLuaFunctionById(_callBack);
cocos2d::LuaValueDict dict;
dict["isSuccess"] =cocos2d::LuaValue::booleanValue(isSuccess);
cocos2d::LuaBridge::getStack()->pushLuaValueDict( dict );
cocos2d::LuaBridge::getStack()->executeFunction(1);
cocos2d::LuaBridge::releaseLuaFunctionById(_callBack);
}其中createQRcode方法为最终lua掉用oc的方法，将生成的图片存到cocos2dx的writablePath下,并保存为"qrCode.png"。最后在lua端取出用sprite显示。
------------1.3lua调用createQRcode方法，并显示
local callBack = function (message)
local filePath = cc.FileUtils:getInstance():getWritablePath()
filePath = filePath.."qrCode.png"
local rect = cc.rect(0, 0, 180, 180)
local sprite = cc.Sprite:create()
sprite:initWithFile(filePath, rect)
sprite:setPosition(300, 300)
self:addChild(sprite)
end
local info = {listener = callBack, qrCodeStr = "https://www.baidu.com/"}
luaoc.callStaticMethod("AppController", "createQRCode", info)项目->TARGETS->Build Phases->Link Binary With Libraries->左下角“+”号，search框中输入CoreImage.framework，选择匹配的选项即可。
-----2.zBar sdk实现二维码扫描
------------2.1下载zBar sdk
地址在后面给出。
------------2.2将zBarSDK解压并将解压后的zBarSDK导入到工程项目->frameworks->runtime-src->proj.ios_mac->ios下。
解压后的zBarSDK目录包含：Headers,libzbar.a,Resources。
如果导入工程后没有自动添加libzbar.a依赖框架，则需要手动添加该依赖框架(如1.4)。
------------2.3项目->frameworks->runtime-src->proj.ios_mac->ios->zBarSDK下新建ZCZBarViewController.h和ZCZBarViewController.mm两个文件，并导入工程，代码如下。
------------2.4ZCZBarViewController.h代码：
/*
版本说明 iOS研究院 305044955
1.8版本 剔除生成二维码文件，使用iOS7原生生成二维码
1.7版本 修复了开启相机点击，用户如果点击拒绝，会导致崩溃的问题
1.6版本 增加了支持了区别条码和二维码，可以关闭扫描二维码来增加条码扫描速度
1.5版本 修正了iOS6下扫描会卡死，增加了iOS7下支持条形码,修改了算法，增加了效率
1.4版本 支持iOS8系统，修改了相应UI的适配问题
1.3版本 全新支持arm7s arm64 全新支持ARC
1.2版本 ZC封装的ZBar二维码SDK
1、更新类名从CustomViewController更改为ZCZBarViewController
2、删除掉代理的相关代码
1.1版本 ZC封装的ZBar二维码SDK~
1、增加block回调
2、取消代理
3、增加适配IOS7（ios7在AVFoundation中增加了扫描二维码功能）
1.0版本 ZC封装的ZBar二维码SDK~1.0版本初始建立
二维码编译顺序
Zbar编译
需要添加AVFoundation CoreMedia CoreVideo QuartzCore libiconv
//示例代码
扫描代码
BOOL代表是否关闭二维码扫描，专门扫描条形码
ZCZBarViewController*vc=[[ZCZBarViewController alloc]initWithIsQRCode:NO Block:^(NSString *result, BOOL isFinish) {
if (isFinish) {
NSLog(@"最后的结果%@",result);
}
}];
[self presentViewController:vc animated:YES completion:nil];
生成二维码
[ZCZBarViewController createImageWithImageView:imageView String:@"http://www.baidu.com"Scale:4];
*/
#import
#import
#import "ZBarReaderController.h"
#import
#define IOS7 [[[UIDevice currentDevice] systemVersion]floatValue]>=7
@interface ZCZBarViewController : UIViewController
{
int num;
BOOL upOrdown;
NSTimer * timer;
UIImageView*_line;
}
@property (nonatomic,strong) AVCaptureVideoPreviewLayer *captureVideoPreviewLayer;
@property (nonatomic, strong) AVCaptureSession *captureSession;
@property (nonatomic, assign) BOOL isScanning;
@property (nonatomic,copy)void(^ScanResult)(NSString*result,BOOL isSucceed);
@property (nonatomic)BOOL isQRCode;
//初始化函数
-(id)initWithIsQRCode:(BOOL)isQRCode Block:(void(^)(NSString*,BOOL))a;
//正则表达式对扫描结果筛选
+(NSString*)zhengze:(NSString*)str;
//创建二维码
+(void)createImageWithImageView:(UIImageView*)imageView String:(NSString*)str Scale:(CGFloat)scale;
@end #import "ZCZBarViewController.h"
#import
@interface ZCZBarViewController ()
@end
#define WIDTH ( ([UIScreen mainScreen].bounds.size.width>[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
//[UIScreen mainScreen].bounds.size.width
#define HEIGHT ( ([UIScreen mainScreen].bounds.size.width<[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
//[UIScreen mainScreen].bounds.size.height
@implementation ZCZBarViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
-(id)initWithIsQRCode:(BOOL)isQRCode Block:(void(^)(NSString*,BOOL))a
{
if (self=[super init]) {
self.ScanResult=a;
self.isQRCode=isQRCode;
}
return self;
}
-(void)createView{
//[email protected] [email protected]
UIImage*image= [UIImage imageNamed:@"[email protected]"];
float capWidth=image.size.width/2;
float capHeight=image.size.height/2;
image=[image stretchableImageWithLeftCapWidth:capWidth topCapHeight:capHeight];
UIImageView* bgImageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 64, WIDTH, HEIGHT-64)];
//bgImageView.contentMode=UIViewContentModeTop;
bgImageView.clipsToBounds=YES;
bgImageView.image=image;
bgImageView.userInteractionEnabled=YES;
[self.view addSubview:bgImageView];
// UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(0, bgImageView.frame.size.height-140, WIDTH, 40)];
// label.text = @"将取景框对准二维码，即可自动扫描。";
// label.textColor = [UIColor whiteColor];
// label.textAlignment = NSTextAlignmentCenter;
// label.lineBreakMode = NSLineBreakByWordWrapping;
// label.numberOfLines = 2;
// label.font=[UIFont systemFontOfSize:12];
// label.backgroundColor = [UIColor clearColor];
// [bgImageView addSubview:label];
_line = [[UIImageView alloc] initWithFrame:CGRectMake((WIDTH-220)/2, 70, 220, 2)];
_line.image = [UIImage imageNamed:@"qrcode_scan_light_green.png"];
[bgImageView addSubview:_line];
// //下方相册
// UIImageView*scanImageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, HEIGHT-100, WIDTH, 100)];
// scanImageView.image=[UIImage imageNamed:@"qrcode_scan_bar.png"];
// scanImageView.userInteractionEnabled=YES;
// [self.view addSubview:scanImageView];
// NSArray*unSelectImageNames=@[@"qrcode_scan_btn_photo_nor.png",@"qrcode_scan_btn_flash_nor.png",@"qrcode_scan_btn_myqrcode_nor.png"];
// NSArray*selectImageNames=@[@"qrcode_scan_btn_photo_down.png",@"qrcode_scan_btn_flash_down.png",@"qrcode_scan_btn_myqrcode_down.png"];
//
// for (int i=0; i 1 &&
[inputDevice
supportsAVCaptureSessionPreset:AVCaptureSessionPresetiFrame960x540]) {
// NSLog(@"960");
preset = AVCaptureSessionPresetiFrame960x540;
}
if (!preset) {
// NSLog(@"MED");
preset = AVCaptureSessionPresetMedium;
}
self.captureSession.sessionPreset = preset;
if (!self.captureVideoPreviewLayer) {
self.captureVideoPreviewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession];
}
// NSLog(@"prev %p %@", self.prevLayer, self.prevLayer);
self.captureVideoPreviewLayer.frame = CGRectMake(0, 0, WIDTH, HEIGHT);//self.view.bounds;
self.captureVideoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
[self.view.layer addSublayer: self.captureVideoPreviewLayer];
self.isScanning = YES;
[self.captureSession startRunning];
}
}
- (UIImage *) imageFromSampleBuffer:(CMSampleBufferRef) sampleBuffer
{
CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
// Lock the base address of the pixel buffer
CVPixelBufferLockBaseAddress(imageBuffer,0);
// Get the number of bytes per row for the pixel buffer
size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer);
// Get the pixel buffer width and height
size_t width = CVPixelBufferGetWidth(imageBuffer);
size_t height = CVPixelBufferGetHeight(imageBuffer);
// Create a device-dependent RGB color space
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
if (!colorSpace)
{
NSLog(@"CGColorSpaceCreateDeviceRGB failure");
return nil;
}
// Get the base address of the pixel buffer
void *baseAddress = CVPixelBufferGetBaseAddress(imageBuffer);
// Get the data size for contiguous planes of the pixel buffer.
size_t bufferSize = CVPixelBufferGetDataSize(imageBuffer);
// Create a Quartz direct-access data provider that uses data we supply
CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, baseAddress, bufferSize,
NULL);
// Create a bitmap image from data supplied by our data provider
CGImageRef cgImage =
CGImageCreate(width,
height,
8,
32,
bytesPerRow,
colorSpace,
kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Little,
provider,
NULL,
true,
kCGRenderingIntentDefault);
CGDataProviderRelease(provider);
CGColorSpaceRelease(colorSpace);
// Create and return an image object representing the specified Quartz image
UIImage *image = [UIImage imageWithCGImage:cgImage];
return image;
}
#pragma mark 对图像进行解码
- (void)decodeImage:(UIImage *)image
{
self.isScanning = NO;
ZBarSymbol *symbol = nil;
ZBarReaderController* read = [ZBarReaderController new];
read.readerDelegate = self;
CGImageRef cgImageRef = image.CGImage;
for(symbol in [read scanImage:cgImageRef])break;
if (symbol!=nil) {
if (timer) {
[timer invalidate];
timer=nil;
}
_line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2);
num = 0;
upOrdown = NO;
self.ScanResult(symbol.data,YES);
[self.captureSession stopRunning];
[self dismissViewControllerAnimated:YES completion:nil];
}else{
timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
num = 0;
upOrdown = NO;
self.isScanning = YES;
[self.captureSession startRunning];
}
}
#pragma mark - AVCaptureVideoDataOutputSampleBufferDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection
{
UIImage *image = [self imageFromSampleBuffer:sampleBuffer];
[self decodeImage:image];
}
#pragma mark AVCaptureMetadataOutputObjectsDelegate//IOS7下触发
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{
if (metadataObjects.count>0)
{
AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];
self.ScanResult(metadataObject.stringValue,YES);
}
[self.captureSession stopRunning];
_line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2);
num = 0;
upOrdown = NO;
[self dismissViewControllerAnimated:YES completion:nil];
}
#pragma mark - UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
if (timer) {
[timer invalidate];
timer=nil;
}
_line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2);
num = 0;
upOrdown = NO;
UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage"];
[self dismissViewControllerAnimated:YES completion:^{[self decodeImage:image];}];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
if (timer) {
[timer invalidate];
timer=nil;
}
_line.frame = CGRectMake((WIDTH-220)/2, 70, 220, 2);
num = 0;
upOrdown = NO;
timer = [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
[self dismissViewControllerAnimated:YES completion:^{
self.isScanning = YES;
[self.captureSession startRunning];
}];
}
#pragma mark - DecoderDelegate
+(NSString*)zhengze:(NSString*)str
{
NSError *error;
//http+:[^\\s]* 这是检测网址的正则表达式
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"http+:[^\\s]*" options:0 error:&error];//筛选
if (regex != nil) {
NSTextCheckingResult *firstMatch = [regex firstMatchInString:str options:0 range:NSMakeRange(0, [str length])];
if (firstMatch) {
NSRange resultRange = [firstMatch rangeAtIndex:0];
//从urlString中截取数据
NSString *result1 = [str substringWithRange:resultRange];
NSLog(@"正则表达后的结果%@",result1);
return result1;
}
}
return nil;
}
+(void)createImageWithImageView:(UIImageView*)imageView String:(NSString*)str Scale:(CGFloat)scale{
CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
[filter setDefaults];
NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
[filter setValue:data forKey:@"inputMessage"];
CIImage *outputImage = [filter outputImage];
CIContext *context = [CIContext contextWithOptions:nil];
CGImageRef cgImage = [context createCGImage:outputImage
fromRect:[outputImage extent]];
UIImage *image = [UIImage imageWithCGImage:cgImage
scale:1.0
orientation:UIImageOrientationUp];
UIImage *resized = nil;
CGFloat width = image.size.width*scale;
CGFloat height = image.size.height*scale;
UIGraphicsBeginImageContext(CGSizeMake(width, height));
CGContextRef context1 = UIGraphicsGetCurrentContext();
CGContextSetInterpolationQuality(context1, kCGInterpolationNone);
[image drawInRect:CGRectMake(0, -50, width, height)];
resized = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
imageView.image = resized;
CGImageRelease(cgImage);
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#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.
}
*/
支持旋转
//-(BOOL)shouldAutorotate{
// return NO;
//}
支持的方向
//- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
// return UIInterfaceOrientationMaskPortrait;
//}
@end ------------2.5AppController.h中添加代码：
//获取当前正在显示的ViewController
+ (UIViewController *)getCurrentVC;
//获取当前屏幕中present出来的viewcontroller。
- (UIViewController *)getPresentedViewController;
//扫描二维码
+(void)scanQRCode:(NSDictionary *)info;//获取当前正在显示的ViewController
+ (UIViewController *)getCurrentVC
{
UIViewController *result = nil;
UIWindow * window = [[UIApplication sharedApplication] keyWindow];
if (window.windowLevel != UIWindowLevelNormal)
{
NSArray *windows = [[UIApplication sharedApplication] windows];
for(UIWindow * tmpWin in windows)
{
if (tmpWin.windowLevel == UIWindowLevelNormal)
{
window = tmpWin;
break;
}
}
}
UIView *frontView = [[window subviews] objectAtIndex:0];
id nextResponder = [frontView nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]])
result = nextResponder;
else
result = window.rootViewController;
return result;
}
//获取当前屏幕中present出来的viewcontroller。
- (UIViewController *)getPresentedViewController
{
UIViewController *appRootVC = [UIApplication sharedApplication].keyWindow.rootViewController;
UIViewController *topVC = appRootVC;
if (topVC.presentedViewController) {
topVC = topVC.presentedViewController;
}
return topVC;
}
+(void) scanQRCode:(NSDictionary *)info
{
int _callBack = [[info objectForKey:@"listener"] intValue];
// SGScanningQRCodeVC *scanningQRCodeVC = [[SGScanningQRCodeVC alloc] init];
// [scanningQRCodeVC setupScanningQRCode];
UIViewController *nowViewController = [self getCurrentVC];
ZCZBarViewController*vc=[[ZCZBarViewController alloc]initWithIsQRCode:NO Block:^(NSString *result, BOOL isFinish) {
if (isFinish) {
NSLog(@"最后的结果%@",result);
UIViewController *nowViewController = [self getCurrentVC];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.02 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[nowViewController dismissViewControllerAnimated:NO completion:nil];
cocos2d::LuaBridge::pushLuaFunctionById(_callBack);
cocos2d::LuaValueDict dict;
dict["scanResult"] = cocos2d::LuaValue::stringValue([result UTF8String]);
cocos2d::LuaBridge::getStack()->pushLuaValueDict(dict);
cocos2d::LuaBridge::getStack()->executeFunction(1);
cocos2d::LuaBridge::releaseLuaFunctionById(_callBack);
});
}
}];
[nowViewController presentViewController:vc animated:YES completion:nil];
}------------2.6lua掉用oc扫描二维码代码：
local callBack = function (message)
print("message scanResult : ", message.scanResult)
Utils.showTip(message.scanResult)
end
local info = {listener = callBack}
luaoc.callStaticMethod("AppController", "scanQRCode", info)如上1.4，扫描二维码需要添加框架AVFoundation, CoreMedie, CoreVideo, QuartzCore, libiconv
-----3.扫描界面横竖屏说明
如果游戏界面是横屏的，而二维码扫描界面要求是竖屏的，则需要做些操作。
------------3.1增加竖屏支持
项目->TARGETS->General->Deployment Info->Device Orientation->勾选Portrait,Landscape Left, Landscape Right。
------------3.2让游戏界面只支持横屏
项目->frameworks->runtime-src->proj.ios_mac->ios->RootViewController.mm中supportedInterfaceOrientations方法修改为：
// For ios6, use supportedInterfaceOrientations & shouldAutorotate instead
- (NSUInteger) supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
//#ifdef __IPHONE_6_0
// return UIInterfaceOrientationMaskAllButUpsideDown;
//#endif
}项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中增加代码：
支持旋转
//-(BOOL)shouldAutorotate{
// return NO;
//}
支持的方向
//- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
// return UIInterfaceOrientationMaskPortrait;
//}项目->frameworks->runtime-src->proj.ios_mac->ios-> ZCZBarViewController.mm中将
#define WIDTH和#define HEIGHT两个宏的值颠倒下。
-----4.关于项目->frameworks->runtime-src->proj.ios_mac->ios->ZCZBarViewController.mm中#define WIDTH和#define HEIGHT两个宏本来因该是
#define WIDTH [UIScreen mainScreen].bounds.size.width
#define HEIGHT [UIScreen mainScreen].bounds.size.height
但在iphone4s(ios6.1.3)上取出的width和height为 320, 480，而在iPhone6 Plus(ios10.2)上width和height为 568, 320。一个宽小于高，一个宽大于高，使得4s横屏的时候，6Plus竖屏是对的，而在6Plus上横屏就是乱的。
所以后来将两个宏修改为(注意：两边一定要带括号，防止编译时宏展开后由于操作符优先级导致的运算错误)
#define WIDTH ( ([UIScreen mainScreen].bounds.size.width>[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
#define HEIGHT ( ([UIScreen mainScreen].bounds.size.width<[UIScreen mainScreen].bounds.size.height)?[UIScreen mainScreen].bounds.size.width:[UIScreen mainScreen].bounds.size.height )
从而将宽固定取获得的二者较大值，高为二者较小值。若是竖屏，则反过来。
-----5.遇到的一些问题
------------5.1对于ZCZBarViewController.mm中的initCpture方法中有句
AVAuthorizationStatus authStatus = [AVCaptureDeviceauthorizationStatusForMediaType:mediaType];
注意：此方法只对ios7以上的系统有用，如果是在ios6的系统的话就直接崩溃了，况且ios6上也没有“设置--隐私--相机”那一项。
所以加了if(IOS7)的判断。
------------5.2若碰到错误Cannot synthesize weak property in file using manual reference counting项目->TARGETS->Build Settings->Apple LLVM 8.0-Language-Objective C->Weak References in Manual Retian Release改为YES
------------5.3编译报错XXXX.o
若编译运行报错，XXXX.o什么什么的问题，则可能是有依赖框架没有导入。
-----6.参考链接
//原生生成二维码
http://blog.csdn.net/zhuming3834/article/details/50832953
//原生二维码扫描
http://www.cocoachina.com/ios/20161009/17696.html
//zBar下载地址
http://download.csdn.net/download/kid_devil/7552613
//zBarDemo下载地址
http://download.csdn.net/detail/shan1991fei/9474417
//二维码扫描之zXing与zBar的优劣
http://blog.csdn.net/l_215851356/article/details/51898514