系统自带二维码扫一扫
因为个人项目是导航栏点击事件跳转到扫一扫控制器,所以下面的控制器里面会有导航栏
View.h里面
#import <UIKit/UIKit.h>
@protocol QRCodeReaderViewDelegate <NSObject>
- (void)readerScanResult:(NSString *)result;
@end
@interface QRCodeReaderView : UIView
@property (nonatomic, weak) id<QRCodeReaderViewDelegate> delegate;
@property (nonatomic,copy)UIImageView * readLineView;
@property (nonatomic,assign)BOOL is_Anmotion;
@property (nonatomic,assign)BOOL is_AnmotionFinished;
//开启关闭扫描
- (void)start;
- (void)stop;
- (void)loopDrawLine;//初始化扫描线
@end
View.m里面
#import "QRCodeReaderView.h"
#import <AVFoundation/AVFoundation.h>
#define DeviceMaxHeight ([UIScreen mainScreen].bounds.size.height)
#define DeviceMaxWidth ([UIScreen mainScreen].bounds.size.width)
#define widthRate DeviceMaxWidth/320
#define contentTitleColorStr @"666666" //正文颜色较深
@interface QRCodeReaderView ()<AVCaptureMetadataOutputObjectsDelegate>
{
AVCaptureSession * session;
NSTimer * countTime;
}
@property (nonatomic, strong) CAShapeLayer *overlay;
@end
@implementation QRCodeReaderView
- (id)initWithFrame:(CGRect)frame
{
if ((self = [super initWithFrame:frame])) {
[self instanceDevice];
}
return self;
}
- (void)instanceDevice
{
//扫描区域(一般UI会提供中间透明四周带样式的图片这就是扫描边框)
UIImage *hbImage=[UIImage imageNamed:@"fktx_2x01"];
UIImageView * scanZomeBack=[[UIImageView alloc] init];
scanZomeBack.backgroundColor = [UIColor clearColor];
scanZomeBack.layer.borderColor = [UIColor clearColor].CGColor;
// scanZomeBack.layer.borderWidth = 0;
scanZomeBack.image = hbImage;
//添加一个背景图片
CGRect mImagerect = CGRectMake(60*widthRate, (DeviceMaxHeight-200*widthRate)/2, 200*widthRate, 200*widthRate);
[scanZomeBack setFrame:mImagerect];
CGRect scanCrop=[self getScanCrop:mImagerect readerViewBounds:self.frame];
[self addSubview:scanZomeBack];
//获取摄像设备
AVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
//创建输入流
AVCaptureDeviceInput * input = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];
//创建输出流
AVCaptureMetadataOutput * output = [[AVCaptureMetadataOutput alloc]init];
//设置代理 在主线程里刷新
[output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
output.rectOfInterest = scanCrop;
//初始化链接对象
session = [[AVCaptureSession alloc]init];
//高质量采集率
[session setSessionPreset:AVCaptureSessionPresetHigh];
if (input) {
[session addInput:input];
}
if (output) {
[session addOutput:output];
//设置扫码支持的编码格式(如下设置条形码和二维码兼容)
NSMutableArray *a = [[NSMutableArray alloc] init];
if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeQRCode]) {
[a addObject:AVMetadataObjectTypeQRCode];
}
if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeEAN13Code]) {
[a addObject:AVMetadataObjectTypeEAN13Code];
}
if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeEAN8Code]) {
[a addObject:AVMetadataObjectTypeEAN8Code];
}
if ([output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeCode128Code]) {
[a addObject:AVMetadataObjectTypeCode128Code];
}
output.metadataObjectTypes=a;
}
AVCaptureVideoPreviewLayer * layer = [AVCaptureVideoPreviewLayer layerWithSession:session];
layer.videoGravity=AVLayerVideoGravityResizeAspectFill;
layer.frame=self.layer.bounds;
[self.layer insertSublayer:layer atIndex:0];
[self setOverlayPickerView:self];
//开始捕获
[session startRunning];
}
-(void)loopDrawLine
{
_is_AnmotionFinished = NO;
CGRect rect = CGRectMake(60*widthRate, (DeviceMaxHeight-200*widthRate)/2, 200*widthRate, 2);
if (_readLineView) {
_readLineView.alpha = 1;
_readLineView.frame = rect;
_readLineView.backgroundColor = FZColor(110, 185, 43);
}
else{
_readLineView = [[UIImageView alloc] initWithFrame:rect];
//设置扫面线背景图片
[_readLineView setImage:[UIImage imageNamed:@"scanLine"]];
[self addSubview:_readLineView];
}
[UIView animateWithDuration:1.5 animations:^{
//修改fream的代码写在这里,扫描线有上下滑动效果
_readLineView.frame =CGRectMake(60*widthRate, (DeviceMaxHeight-200*widthRate)/2+200*widthRate-5, 200*widthRate, 2);
} completion:^(BOOL finished) {
if (!_is_Anmotion) {
[self loopDrawLine];
}
_is_AnmotionFinished = YES;
}];
}
- (void)setOverlayPickerView:(QRCodeReaderView *)reader
{
CGFloat wid = 60*widthRate;
CGFloat heih = (DeviceMaxHeight - 200*widthRate)/2;
//最上部view
UIView* upView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, DeviceMaxWidth, heih)];
[reader addSubview:upView];
upView.alpha = 0.4;
upView.backgroundColor = [UIColor blackColor];
//左侧的view
UIView * cLeftView = [[UIView alloc] initWithFrame:CGRectMake(0, heih, wid, 200*widthRate)];
cLeftView.alpha = 0.4;
cLeftView.backgroundColor = [UIColor blackColor];
[reader addSubview:cLeftView];
//右侧的view
UIView *rightView = [[UIView alloc] initWithFrame:CGRectMake(DeviceMaxWidth-wid, heih, wid, 200*widthRate)];
rightView.backgroundColor = [UIColor blackColor];
rightView.alpha = 0.4;
[reader addSubview:rightView];
//底部view
UIView * downView = [[UIView alloc] initWithFrame:CGRectMake(0, heih+200*widthRate, DeviceMaxWidth, DeviceMaxHeight - heih-200*widthRate)];
downView.backgroundColor = [UIColor blackColor];
downView.alpha = 0.4;
[reader addSubview:downView];
//用于说明的label
UILabel * labIntroudction= [[UILabel alloc] init];
labIntroudction.backgroundColor = [UIColor clearColor];
labIntroudction.frame=CGRectMake(0, (heih-64-50*widthRate)/2-10, DeviceMaxWidth, 50*widthRate);
labIntroudction.textAlignment = NSTextAlignmentCenter;
labIntroudction.textColor=[UIColor whiteColor];
labIntroudction.text=@"请将二维码/条形码放入框内,即可自动扫描";
labIntroudction.font = [UIFont boldSystemFontOfSize:14];
labIntroudction.textColor = FZColor(110, 185, 43);
[downView addSubview:labIntroudction];
// //开关灯button(这里是开灯按钮,我的项目里面没用到,所以注释掉)
// UIButton * turnBtn = [UIButton buttonWithType:UIButtonTypeCustom];
// turnBtn.backgroundColor = [UIColor clearColor];
// [turnBtn setBackgroundImage:[UIImage imageNamed:@"lightSelect"] forState:UIControlStateNormal];
// [turnBtn setBackgroundImage:[UIImage imageNamed:@"lightNormal"] forState:UIControlStateSelected];
// turnBtn.frame=CGRectMake((DeviceMaxWidth-50*widthRate)/2, (CGRectGetHeight(downView.frame)-50*widthRate)/2, 50*widthRate, 50*widthRate);
// [turnBtn addTarget:self action:@selector(turnBtnEvent:) forControlEvents:UIControlEventTouchUpInside];
// [downView addSubview:turnBtn];
}
- (void)turnBtnEvent:(UIButton *)button_
{
button_.selected = !button_.selected;
if (button_.selected) {
[self turnTorchOn:YES];
}
else{
[self turnTorchOn:NO];
}
}
- (void)turnTorchOn:(bool)on
{
Class captureDeviceClass = NSClassFromString(@"AVCaptureDevice");
if (captureDeviceClass != nil) {
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
if ([device hasTorch] && [device hasFlash]){
[device lockForConfiguration:nil];
if (on) {
[device setTorchMode:AVCaptureTorchModeOn];
[device setFlashMode:AVCaptureFlashModeOn];
} else {
[device setTorchMode:AVCaptureTorchModeOff];
[device setFlashMode:AVCaptureFlashModeOff];
}
[device unlockForConfiguration];
}
}
}
-(CGRect)getScanCrop:(CGRect)rect readerViewBounds:(CGRect)readerViewBounds
{
CGFloat x,y,width,height;
// width = (CGFloat)(rect.size.height+10)/readerViewBounds.size.height;
//
// height = (CGFloat)(rect.size.width-50)/readerViewBounds.size.width;
//
// x = (1-width)/2;
// y = (1-height)/2;
x = (CGRectGetHeight(readerViewBounds)-CGRectGetHeight(rect))/2/CGRectGetHeight(readerViewBounds);
y = (CGRectGetWidth(readerViewBounds)-CGRectGetWidth(rect))/2/CGRectGetWidth(readerViewBounds);
width = CGRectGetHeight(rect)/CGRectGetHeight(readerViewBounds);
height = CGRectGetWidth(rect)/CGRectGetWidth(readerViewBounds);
return CGRectMake(x, y, width, height);
}
- (void)start
{
[session startRunning];
}
- (void)stop
{
[session stopRunning];
}
#pragma mark - 扫描结果
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{
if (metadataObjects && metadataObjects.count>0) {
AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex : 0 ];
//输出扫描字符串
if (_delegate && [_delegate respondsToSelector:@selector(readerScanResult:)]) {
[_delegate readerScanResult:metadataObject.stringValue];
}
}
}
#pragma mark - 颜色
//获取颜色
- (UIColor *)colorFromHexRGB:(NSString *)inColorString
{
UIColor *result = nil;
unsigned int colorCode = 0;
unsigned char redByte, greenByte, blueByte;
if (nil != inColorString)
{
NSScanner *scanner = [NSScanner scannerWithString:inColorString];
(void) [scanner scanHexInt:&colorCode]; // ignore error
}
redByte = (unsigned char) (colorCode >> 16);
greenByte = (unsigned char) (colorCode >> 8);
blueByte = (unsigned char) (colorCode); // masks off high bits
result = [UIColor
colorWithRed: (float)redByte / 0xff
green: (float)greenByte/ 0xff
blue: (float)blueByte / 0xff
alpha:1.0];
return result;
}
@end
ViewController.m里面(.h里面无代码)
//
// SWeepViewController.m
// 美邻家居
//
// Created by 付智鹏 on 16/2/23.
// Copyright © 2016年 付智鹏. All rights reserved.
//
#import "SWeepViewController.h"
#import "QRCodeReaderView.h"
#import <AVFoundation/AVFoundation.h>
#import <AudioToolbox/AudioToolbox.h>
#define DeviceMaxHeight ([UIScreen mainScreen].bounds.size.height)
#define DeviceMaxWidth ([UIScreen mainScreen].bounds.size.width)
#define widthRate DeviceMaxWidth/320
#define IOS8 ([[UIDevice currentDevice].systemVersion intValue] >= 8 ? YES : NO)
@interface SWeepViewController ()<QRCodeReaderViewDelegate,AVCaptureMetadataOutputObjectsDelegate,UINavigationControllerDelegate,UIImagePickerControllerDelegate,UIAlertViewDelegate>
{
QRCodeReaderView * readview;//二维码扫描对象
BOOL isFirst;//第一次进入该页面
BOOL isPush;//跳转到下一级页面
}
@property (strong, nonatomic) CIDetector *detector;
@end
@implementation SWeepViewController
-(void)viewDidLoad
{
//右侧导航栏按钮(个人项目中是导航栏上按钮推出此控制器,所以这里会有导航栏的设置,不添加导航栏的可以忽略)
// UIButton *rightbutton = [UIButton rightbuttonwithtitleName:@"相册"target:self //action:@selector(alumbBtnEvent)];
// UIBarButtonItem *rightBtn = [[UIBarButtonItem alloc]initWithCustomView:rightbutton];
// self.navigationItem.rightBarButtonItem = rightBtn;
isFirst = YES;
isPush = NO;
[self InitScan];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark 初始化扫描
- (void)InitScan
{
if (readview) {
[readview removeFromSuperview];
readview = nil;
}
readview = [[QRCodeReaderView alloc]initWithFrame:CGRectMake(0, 0, DeviceMaxWidth, DeviceMaxHeight)];
readview.is_AnmotionFinished = YES;
readview.backgroundColor = [UIColor clearColor];
readview.delegate = self;
readview.alpha = 0;
[self.view addSubview:readview];
[UIView animateWithDuration:0.5 animations:^{
readview.alpha = 1;
}completion:^(BOOL finished) {
}];
}
#pragma mark - 相册
- (void)alumbBtnEvent
{
self.detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:@{ CIDetectorAccuracy : CIDetectorAccuracyHigh }];
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) { //判断设备是否支持相册
if (IOS8) {
UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"未开启访问相册权限，现在去开启！" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
alert.tag = 4;
[alert show];
}
else{
UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"设备不支持访问相册，请在设置->隐私->照片中进行设置！" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alert show];
}
return;
}
isPush = YES;
UIImagePickerController *mediaUI = [[UIImagePickerController alloc] init];
mediaUI.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
mediaUI.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeSavedPhotosAlbum];
mediaUI.allowsEditing = NO;
mediaUI.delegate = self;
[self presentViewController:mediaUI animated:YES completion:^{
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault animated:YES];
}];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
if (!image){
image = [info objectForKey:UIImagePickerControllerOriginalImage];
}
readview.is_Anmotion = YES;
NSArray *features = [self.detector featuresInImage:[CIImage imageWithCGImage:image.CGImage]];
if (features.count >=1) {
[picker dismissViewControllerAnimated:YES completion:^{
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:YES];
CIQRCodeFeature *feature = [features objectAtIndex:0];
NSString *scannedResult = feature.messageString;
//播放扫描二维码的声音
SystemSoundID soundID;
NSString *strSoundFile = [[NSBundle mainBundle] pathForResource:@"noticeMusic" ofType:@"wav"];
AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:strSoundFile],&soundID);
AudioServicesPlaySystemSound(soundID);
[self accordingQcode:scannedResult];
}];
}
else{
UIAlertView * alertView = [[UIAlertView alloc]initWithTitle:nil message:@"该图片没有包含一个二维码！" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alertView show];
[picker dismissViewControllerAnimated:YES completion:^{
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:YES];
readview.is_Anmotion = NO;
[readview start];
}];
}
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[picker dismissViewControllerAnimated:YES completion:^{
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:YES];
}];
}
#pragma mark -QRCodeReaderViewDelegate
- (void)readerScanResult:(NSString *)result
{
readview.is_Anmotion = YES;
[readview stop];
//播放扫描二维码的声音(注意:没有声音文件会崩溃,可以自己去网上下载)
SystemSoundID soundID;
NSString *strSoundFile = [[NSBundle mainBundle] pathForResource:@"noticeMusic" ofType:@"wav"];
AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:strSoundFile],&soundID);
AudioServicesPlaySystemSound(soundID);
[self accordingQcode:result];
[self performSelector:@selector(reStartScan) withObject:nil afterDelay:1.5];
}
#pragma mark - 扫描结果处理
- (void)accordingQcode:(NSString *)str
{
// UIAlertView * alertView = [[UIAlertView alloc]initWithTitle:@"扫描结果" message:str delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
// [alertView show];
}
- (void)reStartScan
{
readview.is_Anmotion = NO;
if (readview.is_AnmotionFinished) {
[readview loopDrawLine];
}
[readview start];
}
#pragma mark - view
- (void)viewWillAppear:(BOOL)animated
{
self.tabBarController.hidesBottomBarWhenPushed = YES;
[super viewWillAppear:animated];
if (isFirst || isPush) {
if (readview) {
[self reStartScan];
}
}
}
-(void)viewWillDisappear:(BOOL)animated{
self.tabBarController.hidesBottomBarWhenPushed = NO;
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
if (readview) {
[readview stop];
readview.is_Anmotion = YES;
}
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if (isFirst) {
isFirst = NO;
}
if (isPush) {
isPush = NO;
}
}
@end
