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+//
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+// ScanViewController.m
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+// qrCodeScanner
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+//
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+// Created by 熊竹 on 18/1/23.
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+// Copyright © 2016年 熊竹. All rights reserved.
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+//
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+
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+#import "ScanViewController.h"
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+#import <AVFoundation/AVFoundation.h>
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+
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+/**
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+ * 屏幕 高 宽 边界
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+ */
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+#define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height
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+#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
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+#define SCREEN_BOUNDS [UIScreen mainScreen].bounds
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+
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+#define TOP (SCREEN_HEIGHT-220)/2
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+#define LEFT (SCREEN_WIDTH-220)/2
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+
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+#define kScanRect CGRectMake(LEFT, TOP, 220, 220)
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+
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+@interface ScanViewController ()<AVCaptureMetadataOutputObjectsDelegate>{
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+ int num;
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+ BOOL upOrdown;
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+ NSTimer * timer;
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+ CAShapeLayer *cropLayer;
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+}
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+@property (strong,nonatomic)AVCaptureDevice * device;
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+@property (strong,nonatomic)AVCaptureDeviceInput * input;
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+@property (strong,nonatomic)AVCaptureMetadataOutput * output;
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+@property (strong,nonatomic)AVCaptureSession * session;
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+@property (strong,nonatomic)AVCaptureVideoPreviewLayer * preview;
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+
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+@property (nonatomic, strong) UIImageView * line;
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+@property (nonatomic, strong) UIButton * btnFlash;
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+
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+@end
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+
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+@implementation ScanViewController
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+
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+- (void)viewDidLoad {
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+ [super viewDidLoad];
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+ // Do any additional setup after loading the view, typically from a nib.
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+
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+ [self configView];
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+}
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+
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+-(void)configView{
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+ [self.view setBackgroundColor:[UIColor blackColor]];
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+ UIImageView * imageView = [[UIImageView alloc]initWithFrame:kScanRect];
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+ NSString * bundlePath = [[ NSBundle mainBundle] pathForResource: @ "qrCodeScanner" ofType :@ "bundle"];
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+ NSBundle *resourceBundle = [NSBundle bundleWithPath:bundlePath];
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+ imageView.image = [UIImage imageNamed:@"pick_bg"
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+ inBundle:resourceBundle
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+ compatibleWithTraitCollection:nil];
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+ imageView.image = [imageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
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+ [_line setTintColor:[self getColor:@"#2face9"]];
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+ [self.view addSubview:imageView];
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+
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+ upOrdown = NO;
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+ num =0;
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+ _line = [[UIImageView alloc] initWithFrame:CGRectMake(LEFT, TOP+10, 220, 2)];
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+ _line.image = [UIImage imageNamed:@"line.png"
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+ inBundle:resourceBundle
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+ compatibleWithTraitCollection:nil];
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+ _line.image = [_line.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
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+ [_line setTintColor:[self getColor:@"#2face9"]];
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+ [self.view addSubview:_line];
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+
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+ timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
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+
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+}
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+
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+-(void) toggleFlash:(UIButton*)button{
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+ if (self.btnFlash.isSelected) {
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+ if ([_device hasTorch]) {
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+ [_device lockForConfiguration:nil];
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+ [_device setTorchMode: AVCaptureTorchModeOff];
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+ [_device unlockForConfiguration];
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+ [_btnFlash setSelected:NO];
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+ }
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+ }else{
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+ NSError *error = nil;
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+ if ([_device hasTorch]) {
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+ BOOL locked = [_device lockForConfiguration:&error];
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+ if (locked) {
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+ _device.torchMode = AVCaptureTorchModeOn;
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+ [_device unlockForConfiguration];
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+ [_btnFlash setSelected:YES];
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+ }
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+ }
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+ }
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+}
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+
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+-(void)viewWillAppear:(BOOL)animated{
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+
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+ [self setCropRect:kScanRect];
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+
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+ NSString * bundlePath = [[ NSBundle mainBundle] pathForResource: @ "qrCodeScanner" ofType :@ "bundle"];
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+ NSBundle *resourceBundle = [NSBundle bundleWithPath:bundlePath];
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+ _btnFlash = [[UIButton alloc] initWithFrame:CGRectMake(([UIScreen mainScreen].bounds.size.width - 72) / 2,
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+ ([UIScreen mainScreen].bounds.size.height + 220) / 2 + 50,
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+ 72, 72)];
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+ [_btnFlash setImage:[UIImage imageNamed:@"ic_shortcut_flash_off"
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+ inBundle:resourceBundle
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+ compatibleWithTraitCollection:nil]
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+ forState:UIControlStateNormal];
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+ [_btnFlash setImage:[UIImage imageNamed:@"ic_shortcut_flash_on"
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+ inBundle:resourceBundle
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+ compatibleWithTraitCollection:nil]
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+ forState:UIControlStateSelected];
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+
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+ [_btnFlash addTarget:self action:@selector(toggleFlash:) forControlEvents:UIControlEventTouchUpInside];
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+ [self.view addSubview:_btnFlash];
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+
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+ UIButton* btnBack = [[UIButton alloc] initWithFrame:CGRectMake(10, 30, 42, 42)];
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+ [btnBack setImage:[UIImage imageNamed:@"prev" inBundle:resourceBundle compatibleWithTraitCollection:nil] forState:UIControlStateNormal];
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+ [btnBack addTarget:self action:@selector(close:) forControlEvents:UIControlEventTouchUpInside];
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+ [self.view addSubview:btnBack];
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+
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+ [self performSelector:@selector(setupCamera) withObject:nil afterDelay:0];
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+
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+}
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+
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+-(void) close:(UIButton*)button{
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+ [self dismissViewControllerAnimated:YES completion:nil];
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+}
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+
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+-(void)animation1
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+{
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+ if (upOrdown == NO) {
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+ num ++;
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+ _line.frame = CGRectMake(LEFT, TOP+10+2*num, 220, 2);
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+ if (2*num == 200) {
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+ upOrdown = YES;
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+ }
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+ }
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+ else {
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+ num --;
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+ _line.frame = CGRectMake(LEFT, TOP+10+2*num, 220, 2);
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+ if (num == 0) {
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+ upOrdown = NO;
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+ }
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+ }
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+
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+}
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+
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+
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+- (void)setCropRect:(CGRect)cropRect{
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+ cropLayer = [[CAShapeLayer alloc] init];
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+ CGMutablePathRef path = CGPathCreateMutable();
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+ CGPathAddRect(path, nil, cropRect);
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+ CGPathAddRect(path, nil, self.view.bounds);
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+
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+ [cropLayer setFillRule:kCAFillRuleEvenOdd];
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+ [cropLayer setPath:path];
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+ [cropLayer setFillColor:[UIColor blackColor].CGColor];
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+ [cropLayer setOpacity:0.6];
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+
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+
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+ [cropLayer setNeedsDisplay];
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+
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+ [self.view.layer addSublayer:cropLayer];
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+}
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+
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+- (void)setupCamera
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+{
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+ AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
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+ if (device==nil) {
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+ UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示" message:@"设备没有摄像头" preferredStyle:UIAlertControllerStyleAlert];
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+ [alert addAction:[UIAlertAction actionWithTitle:@"确认" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
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+
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+ }]];
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+ [self presentViewController:alert animated:YES completion:nil];
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+ return;
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+ }
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+ // Device
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+ _device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
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+
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+ // Input
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+ _input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:nil];
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+
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+ // Output
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+ _output = [[AVCaptureMetadataOutput alloc]init];
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+ [_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
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+
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+ //设置扫描区域
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+ CGFloat top = TOP/SCREEN_HEIGHT;
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+ CGFloat left = LEFT/SCREEN_WIDTH;
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+ CGFloat width = 220/SCREEN_WIDTH;
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+ CGFloat height = 220/SCREEN_HEIGHT;
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+ ///top 与 left 互换 width 与 height 互换
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+ [_output setRectOfInterest:CGRectMake(top,left, height, width)];
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+
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+
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+ // Session
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+ _session = [[AVCaptureSession alloc]init];
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+ [_session setSessionPreset:AVCaptureSessionPresetHigh];
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+ if ([_session canAddInput:self.input])
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+ {
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+ [_session addInput:self.input];
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+ }
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+
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+ if ([_session canAddOutput:self.output])
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+ {
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+ [_session addOutput:self.output];
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+ }
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+
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+ // 条码类型 AVMetadataObjectTypeQRCode
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+ [_output setMetadataObjectTypes:[NSArray arrayWithObjects:AVMetadataObjectTypeQRCode, nil]];
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+
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+ // Preview
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+ _preview =[AVCaptureVideoPreviewLayer layerWithSession:_session];
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+ _preview.videoGravity = AVLayerVideoGravityResizeAspectFill;
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+ _preview.frame =self.view.layer.bounds;
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+ [self.view.layer insertSublayer:_preview atIndex:0];
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+
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+ // Start
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+ [_session startRunning];
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+}
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+
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+#pragma mark AVCaptureMetadataOutputObjectsDelegate
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+- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
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+{
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+ NSString *stringValue;
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+
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+ if ([metadataObjects count] >0)
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+ {
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+ //停止扫描
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+ [_session stopRunning];
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+ [timer setFireDate:[NSDate distantFuture]];
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+
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+ AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];
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+ stringValue = metadataObject.stringValue;
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+ NSLog(@"扫描结果:%@",stringValue);
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+
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+ // NSArray *arry = metadataObject.corners;
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+ // for (id temp in arry) {
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+ // NSLog(@"%@",temp);
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+ // }
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+ //
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+ //
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+ // UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"扫描结果" message:stringValue preferredStyle:UIAlertControllerStyleAlert];
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+ // [alert addAction:[UIAlertAction actionWithTitle:@"确认" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
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+ // if (_session != nil && timer != nil) {
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+ // [_session startRunning];
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+ // [timer setFireDate:[NSDate date]];
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+ // }
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+ //
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+ // }]];
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+ // [self presentViewController:alert animated:YES completion:nil];
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+ if(self.delegate){
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+ [self.delegate onResult:stringValue];
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+ }
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+ [self dismissViewControllerAnimated:YES completion:nil];
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+
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+ } else {
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+ NSLog(@"无扫描信息");
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+ return;
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+ }
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+
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+}
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+
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+
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+- (void)didReceiveMemoryWarning {
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+ [super didReceiveMemoryWarning];
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+ // Dispose of any resources that can be recreated.
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+}
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+
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+- (UIColor *)getColor:(NSString *)hexColor
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+{
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+ if ([hexColor hasPrefix:@"#"]) {
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+ hexColor = [hexColor substringFromIndex:1];
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+ }
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+ unsigned int red,green,blue;
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+ NSRange range;
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+ range.length = 2;
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+ range.location = 0;
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+ [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
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+ range.location = 2;
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+ [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
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+ range.location = 4;
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+ [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&blue];
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+ return [UIColor colorWithRed:(float)(red/255.0f) green:(float)(green / 255.0f) blue:(float)(blue / 255.0f) alpha:1.0f];
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+}
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+
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+-(UIStatusBarStyle)preferredStatusBarStyle{
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+ return UIStatusBarStyleLightContent;
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+}
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+
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+-(BOOL)prefersStatusBarHidden{
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+ return YES;
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+}
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+
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+@end
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+
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