“摇一摇”功能的实现：iPhone对 “摇一摇”有很好的支持，总体说来就两步：
在视图控制器中打开接受“摇一摇”的开关;
- （void）viewDidLoad {// 设置允许摇一摇功能[UIApplication sharedApplication].applicationSupportsShakeToEdit = YES;// 并让自己成为第一响应者[self becomeFirstResponder];}在“摇一摇”触发的制定的方法中实现需要实现的功能（”摇一摇“检测方法）。
// 摇一摇开始摇动 - （void）motionBegan:（UIEventSubtype）motion withEvent:（UIEvent *）event { NSLog（@"开始摇动"）;//添加“摇一摇”动画[self addAnimations];//音效AudioServicesPlaySystemSound （soundID）; return; } // “摇一摇”取消摇动 - （void）motionCancelled:（UIEventSubtype）motion withEvent:（UIEvent *）event { NSLog（@"取消摇动"）; return; } // “摇一摇”摇动结束 - （void）motionEnded:（UIEventSubtype）motion withEvent:（UIEvent *）event { if （event.subtype == UIEventSubtypeMotionShake） { // 判断是否是摇动结束 NSLog（@"摇动结束"）; } return; } ”摇一摇“的动画效果：
- （void）addAnimations {//音效AudioServicesPlaySystemSound （soundID）;//让上面图片的上下移动CABasicAnimation *translation2 = [CABasicAnimation animationWithKeyPath:@"position"];translation2.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];translation2.fromValue = [NSValue valueWithCGPoint:CGPointMake（160, 115）];translation2.toValue = [NSValue valueWithCGPoint:CGPointMake（160, 40）];translation2.duration = 0.4;translation2.repeatCount = 1;translation2.autoreverses = YES;//让下面的图片上下移动CABasicAnimation *translation = [CABasicAnimation animationWithKeyPath:@"position"];translation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];translation.fromValue = [NSValue valueWithCGPoint:CGPointMake（160, 345）];translation.toValue = [NSValue valueWithCGPoint:CGPointMake（160, 420）];translation.duration = 0.4;translation.repeatCount = 1;translation.autoreverses = YES;[imgDown.layer addAnimation:translation forKey:@"translation"];[imgUp.layer addAnimation:translation2 forKey:@"translation2"];}注意：在模拟器中运行时，可以通过「Hardware」-「Shake Gesture」来测试「摇一摇」功能。如下:
“扫一扫”功能的实现：基于AVCaptureDevice做的二维码扫描器，基本步骤如下：
初始化相机，生成扫描器
设置参数
- （void）setupCamera {dispatch_async（dispatch_get_global_queue（DISPATCH_QUEUE_PRIORITY_DEFAULT, 0）, ^{_device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];_input = [AVCaptureDeviceInput deviceInputWithDevice:_device error:nil];_output = [[AVCaptureMetadataOutput alloc]init];[_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue（）];_session = [[AVCaptureSession alloc]init];[_session setSessionPreset:AVCaptureSessionPresetHigh];if （[_session canAddInput:self.input]）{[_session addInput:self.input];}if （[_session canAddOutput:self.output]）{[_session addOutput:self.output];}// 条码类型 AVMetadataObjectTypeQRCode_output.metadataObjectTypes = [NSArray arrayWithObjects:AVMetadataObjectTypeEAN13Code, AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode128Code, AVMetadataObjectTypeQRCode, nil];dispatch_async（dispatch_get_main_queue（）, ^{//更新界面_preview =[AVCaptureVideoPreviewLayer layerWithSession:self.session];_preview.videoGravity = AVLayerVideoGravityResizeAspectFill;_preview.frame = CGRectMake（0, 0, CGRectGetWidth（self.centerView.frame）, CGRectGetHeight（self.centerView.frame））;[self.centerView.layer insertSublayer:self.preview atIndex:0];[_session startRunning];}）;}）;}在viewWillAppear和viewWillDisappear里对session做优化（timer是个扫描动画的计时器）
- （void）viewWillAppear:（BOOL）animated {[super viewWillAppear:animated];if （_session && ！[_session isRunning]） {[_session startRunning];}timer = [NSTimer scheduledTimerWithTimeInterval:0.02 target:self selector:@selector（scanningAnimation） userInfo:nil repeats:YES];[self setupCamera];} - （void）viewWillDisappear:（BOOL）animated {[super viewWillDisappear:animated];_count = 0;[timer invalidate];[self stopReading];}处理扫描结果
- （void）captureOutput:（AVCaptureOutput *）captureOutput didOutputMetadataObjects:（NSArray *）metadataObjects fromConnection:（AVCaptureConnection *）connection {NSString *stringValue;if （[metadataObjects count] >0）{AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];stringValue = metadataObject.stringValue;NSLog（@"%@",stringValue）;}[_session stopRunning];[timer invalidate];_count ++ ;[self stopReading];if （stringValue && _count == 1） {//扫描完成}}用二维码扫描器扫描自己的二维码：
NSString *url = [NSURL URLWithString:@"html/judgement.html" relativeToURL:[ZXApiClient sharedClient].baseURL].absoluteString;if （[stringValue hasPrefix:url]） {//如果扫出来的url是自己的域名开头的，那么做如下的处理}最后附上自己完整的源码：
// Created by Ydw on 16/3/15. // Copyright © 2016年 IZHUO.NET. All rights reserved. //import “ViewController.h” import <AVFoundation/AVFoundation.h>@interface ViewController （） { int number; NSTimer *timer; NSInteger _count; BOOL upOrdown; AVCaptureDevice *lightDevice; }@property （nonatomic,strong） UIView *centerView;//扫描的显示视图/** * 二维码扫描参数 */ @property （strong,nonatomic） AVCaptureDevice *device; @property （strong,nonatomic） AVCaptureDeviceInput *input; @property （strong,nonatomic） AVCaptureMetadataOutput *output; @property （strong,nonatomic） AVCaptureSession *session; @property （strong,nonatomic） AVCaptureVideoPreviewLayer *preview; @property （nonatomic,retain） UIImageView *imageView;//扫描线（void）setupCamera;（void）stopReading;@end @implementation ViewController- （void）viewWillAppear:（BOOL）animated {[super viewWillAppear:animated];if （_session && ！[_session isRunning]） {[_session startRunning];}timer = [NSTimer scheduledTimerWithTimeInterval:0.02 target:self selector:@selector（scanningAnimation） userInfo:nil repeats:YES];[self setupCamera];}- （void）viewDidLoad {[super viewDidLoad];self.view.backgroundColor = [UIColor clearColor];self.automaticallyAdjustsScrollViewInsets = NO;_count = 0 ;//初始化闪光灯设备lightDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];//扫描范围_centerView = [[UIView alloc]initWithFrame:CGRectMake（0, 0, CGRectGetWidth（self.view.frame）, CGRectGetHeight（self.view.frame））];_centerView.backgroundColor = [UIColor clearColor];[self.view addSubview:_centerView];//扫描的视图加载UIView *scanningViewOne = [[UIView alloc]initWithFrame:CGRectMake（0, 0, self.view.frame.size.width, 120）];scanningViewOne.backgroundColor= [[UIColor blackColor] colorWithAlphaComponent:0.4];[self.centerView addSubview:scanningViewOne];UIView *scanningViewTwo = [[UIView alloc]initWithFrame:CGRectMake（0, 120, （self.view.frame.size.width-300）/2, 300）];scanningViewTwo.backgroundColor= [[UIColor blackColor] colorWithAlphaComponent:0.4];[self.centerView addSubview:scanningViewTwo];UIView *scanningViewThree = [[UIView alloc]initWithFrame:CGRectMake（CGRectGetWidth（self.view.frame）/2+150, 120, （self.view.frame.size.width-300）/2, 300）];scanningViewThree.backgroundColor= [[UIColor blackColor] colorWithAlphaComponent:0.4];[self.centerView addSubview:scanningViewThree];UIView *scanningViewFour = [[UIView alloc]initWithFrame:CGRectMake（0, 420, self.view.frame.size.width,CGRectGetHeight（self.view.frame）- 420）];scanningViewFour.backgroundColor= [[UIColor blackColor] colorWithAlphaComponent:0.4];[self.centerView addSubview:scanningViewFour];UILabel *labIntroudction= [[UILabel alloc] initWithFrame:CGRectMake（15, 430, self.view.frame.size.width - 30, 30）];labIntroudction.backgroundColor = [UIColor clearColor];labIntroudction.textAlignment = NSTextAlignmentCenter;labIntroudction.textColor = [UIColor whiteColor];labIntroudction.text = @"请将企业邀请码放入扫描框内";[self.centerView addSubview:labIntroudction];UIButton *openLight = [[UIButton alloc]initWithFrame:CGRectMake（CGRectGetWidth（self.view.frame）/2-25, 470, 50, 50）];[openLight setImage:[UIImage imageNamed:@"灯泡"] forState:UIControlStateNormal];[openLight setImage:[UIImage imageNamed:@"灯泡2"] forState:UIControlStateSelected];[openLight addTarget:self action:@selector（openLightWay:） forControlEvents:UIControlEventTouchUpInside];[self.centerView addSubview:openLight];//扫描线_imageView = [[UIImageView alloc] initWithFrame:CGRectMake（CGRectGetWidth（self.view.frame）/2-110, 130, 220, 5）];_imageView.image = [UIImage imageNamed:@"scanning@3x"];[self.centerView addSubview:_imageView];}- （void）viewWillDisappear:（BOOL）animated {_count= 0;[timer invalidate];[self stopReading];}pragma mark -- 设置参数- （void）setupCamera {dispatch_async（dispatch_get_global_queue（DISPATCH_QUEUE_PRIORITY_DEFAULT, 0）, ^{_device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];_input = [AVCaptureDeviceInput deviceInputWithDevice:_device error:nil];_output = [[AVCaptureMetadataOutput alloc]init];[_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue（）];_session = [[AVCaptureSession alloc]init];[_session setSessionPreset:AVCaptureSessionPresetHigh];if （[_session canAddInput:self.input]）{[_session addInput:self.input];}if （[_session canAddOutput:self.output]）{[_session addOutput:self.output];}// 条码类型 AVMetadataObjectTypeQRCode_output.metadataObjectTypes = [NSArray arrayWithObjects:AVMetadataObjectTypeEAN13Code, AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode128Code, AVMetadataObjectTypeQRCode, nil];dispatch_async（dispatch_get_main_queue（）, ^{//更新界面_preview =[AVCaptureVideoPreviewLayer layerWithSession:self.session];_preview.videoGravity = AVLayerVideoGravityResizeAspectFill;_preview.frame = CGRectMake（0, 0, CGRectGetWidth（self.centerView.frame）, CGRectGetHeight（self.centerView.frame））;[self.centerView.layer insertSublayer:self.preview atIndex:0];[_session startRunning];}）;}）;}//扫描动画- （void）scanningAnimation {if （upOrdown == NO） {number ++;_imageView.frame = CGRectMake（CGRectGetWidth（self.view.frame）/2-115, 130+2*number, 230, 5）;if （2*number == 280） {upOrdown = YES;}}else {number --;_imageView.frame = CGRectMake（CGRectGetWidth（self.view.frame）/2-115, 130+2*number, 230, 5）;if （number == 0） {upOrdown = NO;}}}- （void）stopReading {[_session stopRunning];_session = nil;[_preview removeFromSuperlayer];[timer invalidate];timer = nil ;}-（void）openLightWay:（UIButton *）sender {if （！[lightDevice hasTorch]） {//判断是否有闪光灯UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"当前设备没有闪光灯，不能提供手电筒功能" message:nil preferredStyle:UIAlertControllerStyleAlert];UIAlertAction *sureAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:nil];[alert addAction:sureAction];[self presentViewController:alert animated:YES completion:nil];return;}sender.selected = ！sender.selected;if （sender.selected == YES） {[lightDevice lockForConfiguration:nil];[lightDevice setTorchMode:AVCaptureTorchModeOn];[lightDevice unlockForConfiguration];}else{[lightDevice lockForConfiguration:nil];[lightDevice setTorchMode: AVCaptureTorchModeOff];[lightDevice unlockForConfiguration];}}pragma mark -- AVCaptureMetadataOutputObjectsDelegate- （void）captureOutput:（AVCaptureOutput *）captureOutput didOutputMetadataObjects:（NSArray *）metadataObjects fromConnection:（AVCaptureConnection *）connection {NSString *stringValue;if （[metadataObjects count] >0）{AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];stringValue = metadataObject.stringValue;NSLog（@"%@",stringValue）;}[_session stopRunning];[timer invalidate];_count ++ ;[self stopReading];if （stringValue && _count == 1） {//扫描完成}}- （void）didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated.}@end以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
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