用ZBar三方库生成和扫描二维码

用ZBar三方库生成和扫描二维码

在MainViewController中

.h

#import <UIKit/UIKit.h>

#import "ZBarSDK.h"

@interface MainViewController :
UIViewController < ZBarReaderDelegate ,UITextViewDelegate ,UINavigationControllerDelegate,
UIImagePickerControllerDelegate>

@property (strong,
nonatomic) IBOutlet
UITextView *textView_Code;

- (IBAction)ButtonAction_Scan:(id)sender;

@end

.m

#import "MainViewController.h"

@interface
MainViewController ()

@end

@implementation MainViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{

self = [super
initWithNibName:nibNameOrNil
bundle:nibBundleOrNil];

if (self) {

// Custom initialization
}

return
self;
}

- (void)viewDidLoad
{

[super
viewDidLoad];



self.textView_Code.text =
@"dsgdsgsdhg";

// Do any additional setup after loading the view.

NSNotificationCenter *defaultCenter = [NSNotificationCenter
defaultCenter];

//UIKeyboardWillShowNotification键盘出现
[defaultCenter
addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];



//UIKeyboardWillHideNotification
键盘隐藏
[defaultCenter
addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];
}

// 键盘显示
- (void)keyboardWillShow:(NSNotification *)aNotification
{

//获取键盘的高度

NSDictionary *userInfo = [aNotification
userInfo];

NSValue *aValue = [userInfo
objectForKey:UIKeyboardFrameEndUserInfoKey];

CGRect keyboardRect = [aValue
CGRectValue];

int height = keyboardRect.size.height;



CGRect frame = self.textView_Code.frame;


frame.size.height =
self.view.bounds.size.height -
10 - height;


[self.textView_Code
setFrame:frame];
}

// 键盘消失
- (void)keyboardWillHide:(NSNotification *)aNotification
{

CGRect frame = self.textView_Code.frame;



frame.size.height =
self.view.bounds.size.height -
23;


[self.textView_Code
setFrame:frame];
}
- (void)didReceiveMemoryWarning
{

[super
didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.
}

// 页面传递数据
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{

UIViewController *destination = segue.destinationViewController;



if ([destination respondsToSelector:@selector(setCodeString:)]) {
[destination
setValue:self.textView_Code.text
forKey:@"codeString"];
}
}

- (IBAction)ButtonAction_Scan:(id)sender{



[self.textView_Code
resignFirstResponder];

/*扫描二维码部分：

导入ZBarSDK文件并引入一下框架

***Foundation.framework

CoreMedia.framework

CoreVideo.framework

QuartzCore.framework

libiconv.dylib

引入头文件#import “ZBarSDK.h”
即可使用

当找到条形码时，会执行代理方法



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



最后读取并显示了条形码的图片和内容。*/

ZBarReaderViewController *reader = [ZBarReaderViewController
new];


reader.readerDelegate =
self;

reader.supportedOrientationsMask =
ZBarOrientationMaskAll;



//设置自己定义的界面

[self
setOverlayPickerView:reader];



ZBarImageScanner *scanner = reader.scanner;

[scanner setSymbology:
ZBAR_I25

config: ZBAR_CFG_ENABLE

to: 0];

[self
presentViewController:reader

animated:YES

completion:^{
}];
}
- (void)setOverlayPickerView:(ZBarReaderViewController *)reader
{

//
清除不需要的控件,并加入自定义的

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

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

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

UIBarButtonItem *item1 = [[UIBarButtonItem
alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCancel
target:self
action:@selector(dismissOverlayView:)];



UIBarButtonItem *item2 = [[UIBarButtonItem
alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil
action:nil];



UIBarButtonItem *item3 = [[UIBarButtonItem
alloc]initWithTitle:@"相册"
style:UIBarButtonItemStyleBordered
target:self
action:@selector(clickPhotoToolBarItem:)];

NSArray *array = [NSArray
arrayWithObjects:item1,item2,item3,nil];


[toolbar
setItems:array animated:YES];
}
}
}
}

// 选取相册
-(void)clickPhotoToolBarItem:(id)sender
{

if ([UIImagePickerController
isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{

UIImagePickerController *imagePicker = [[UIImagePickerController
alloc]
init];
imagePicker.delegate =
self;
imagePicker.allowsEditing =
NO;

imagePicker.sourceType =
UIImagePickerControllerSourceTypePhotoLibrary;



[self
dismissViewControllerAnimated:NO
completion:^{}];

[self
presentViewController:imagePicker animated:YES
completion:^{}];
}
}

//取消按钮方法
- (void)dismissOverlayView:(id)sender{

[self
dismissViewControllerAnimated:YES

completion:^{
}];
}

#pragma mark -

#pragma mark 扫描二维码回调

- (void) imagePickerController: (UIImagePickerController*) reader
didFinishPickingMediaWithInfo: (NSDictionary*) info
{

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



if (results != nil)
{

//
是扫描进入的情况

ZBarSymbol *symbol =
nil;

for(symbol in results)

break;



// self.imageView_Code.image = [info objectForKey: UIImagePickerControllerOriginalImage];



[self
dismissViewControllerAnimated:YES

completion:^{
}];

NSString *code = [NSString
stringWithString:symbol.data];



self.textView_Code.text = code;
}

else
{

//
选择图片的情况

UIImage *image = [info
objectForKey:@"UIImagePickerControllerOriginalImage"];

[self
dismissViewControllerAnimated:YES

completion:^{
}];



ZBarReaderController* read = [ZBarReaderController
new];
read.readerDelegate =
self;

CGImageRef cgImageRef = image.CGImage;



ZBarSymbol* symbol =
nil;

for(symbol in [read
scanImage:cgImageRef])
break;



NSString *code = symbol.data;

self.textView_Code.text = code;
}
}

@end

在CreateImageViewController中

.h

#import <UIKit/UIKit.h>

@interface CreateImageViewController :
UIViewController

@property (strong,
nonatomic) NSString *codeString;

//@property (strong, nonatomic) IBOutlet UITextView *textView_Code;

@property (strong,
nonatomic) IBOutlet
UIImageView *imageView_Code;

- (IBAction)buttonAction_SaveToAlbum:(id)sender;

@end

.m

#import "CreateImageViewController.h"

#import "QRCodeGenerator.h"

@interface
CreateImageViewController ()

@end

@implementation CreateImageViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{

self = [super
initWithNibName:nibNameOrNil
bundle:nibBundleOrNil];

if (self) {

// Custom initialization
}

return
self;
}

- (void)viewDidLoad
{

[super
viewDidLoad];

// Do any additional setup after loading the view.

NSLog(@"%@",self.codeString);



NSArray *array = [NSArray
arrayWithObjects:@"1",@"1",@"3",
nil];

NSString *str = @"1";



NSInteger index = [array
indexOfObject:str];

if (index == NSNotFound) {

NSLog(@"不存在数组中");
}

else
{

NSLog(@"第%i个",index);
}






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



if (![self.codeString
isEqualToString:@""]) {

/*字符转二维码

导入 libqrencode文件

引入头文件#import "QRCodeGenerator.h"
即可使用

*/

self.imageView_Code.image = [QRCodeGenerator
qrImageForString:self.codeString
imageSize:self.imageView_Code.bounds.size.width];
}else
{

UIAlertView *alert = [[UIAlertView
alloc] initWithTitle:nil

message:@"输入字符为空"

delegate:nil

cancelButtonTitle:@"OK"

otherButtonTitles:nil];
[alert
show];
}
}
- (void)didReceiveMemoryWarning
{

[super
didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.
}

// 保存到相册按钮
- (IBAction)buttonAction_SaveToAlbum:(id)sender
{

UIImageWriteToSavedPhotosAlbum(self.imageView_Code.image,
self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:),
nil);
}

// 图片存放到相册后的通知
- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError
*)error contextInfo:(void *) contextInfo {

NSString *message;

NSString *title;

if (!error) {
title =
@"Success";
message =
@"成功保存到相册。";
}
else {
title =
@"Failure";

#if DEBUG_MODE
message = [error description];

#else
message =
@"保存到相册失败。";

#endif
}

UIAlertView *alert = [[UIAlertView
alloc]
initWithTitle:nil

message:message

delegate:nil

cancelButtonTitle:@"OK"

otherButtonTitles:nil];
[alert
show];
}

@end


这是框架结构，需要添加的哭，都在图片上显示了