扫描二维码ios7
#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
@interface ScanBarViewController : UIViewController<AVCaptureMetadataOutputObjectsDelegate>
{
int num;
BOOL upOrdown;
NSTimer * timer;
}
@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 * line;
@end
//
// ScanBarViewController.m
// PurchaseTreasure
//
// Created by 黄怡盛 on 15/1/29.
// Copyright (c) 2015年 Volley. All rights reserved.
//
#import "ScanBarViewController.h"
#import "CardInfoViewController.h"
@interface ScanBarViewController ()
@end
static BOOL hasExsitTimer = NO;
@implementation ScanBarViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title = @"扫描二维码";
self.view.backgroundColor = PLaceHolder;
/*
float x = 100;
float width = SCREEN_WIDTH - x * 2;
float height = 40;
float y = SCREEN_HEIGHT - height - 20;
self.view.backgroundColor = [UIColor grayColor];
UIButton * scanButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[scanButton setTitle:@"取消" forState:UIControlStateNormal];
scanButton.frame = CGRectMake(x, y, width, height);
scanButton.titleLabel.font = FONT(20);
[scanButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:scanButton];
*/
float x = 15;
float y = 10;
float width = SCREEN_WIDTH - x * 2;
float height = 50;
UILabel * labIntroudction= [[UILabel alloc] initWithFrame:CGRectMake(x, y, width, height)];
labIntroudction.backgroundColor = [UIColor clearColor];
labIntroudction.numberOfLines=2;
labIntroudction.textColor=[UIColor whiteColor];
labIntroudction.text=@"将二维码图像置于矩形方框内，离手机摄像头10CM左右，系统会自动识别。";
[self.view addSubview:labIntroudction];
x = 10;
y += height + 10;
width = SCREEN_WIDTH - x * 2;
height = width;
UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(x, y, width, height)];
imageView.image = [UIImage imageNamed:@"pick_bg"];
[self.view addSubview:imageView];
x = 50;
y += 10;
width = SCREEN_WIDTH - x * 2;
height = 2;
upOrdown = NO;
num =0;
_line = [[UIImageView alloc] initWithFrame:CGRectMake(x, y, width, height)];
_line.image = [UIImage imageNamed:@"pickLine"];
[self.view addSubview:_line];
timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
hasExsitTimer = YES;
}
-(void)viewWillDisappear:(BOOL)animated
{
[timer invalidate];
[super viewWillDisappear:animated];
}
-(void)dealloc
{
}
-(void)animation1
{
if (upOrdown == NO) {
num ++;
_line.frame = CGRectMake(50, 80+2*num, 220, 2);
if (2*num == 280) {
upOrdown = YES;
}
}
else {
num --;
_line.frame = CGRectMake(50, 80+2*num, 220, 2);
if (num == 0) {
upOrdown = NO;
}
}
}
/*
-(void)backAction
{
[self dismissViewControllerAnimated:YES completion:^{
[timer invalidate];
}];
}
*/
-(void)viewWillAppear:(BOOL)animated
{
if (!hasExsitTimer) {
timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
}
[self setupCamera];
}
- (void)setupCamera
{
// Device
_device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
// Input
_input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:nil];
// Output
_output = [[AVCaptureMetadataOutput alloc]init];
[_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
// Session
_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 =@[AVMetadataObjectTypeQRCode];
float width = SCREEN_WIDTH - 20 * 2;
float height = width;
// Preview
_preview =[AVCaptureVideoPreviewLayer layerWithSession:self.session];
_preview.videoGravity = AVLayerVideoGravityResizeAspectFill;
_preview.frame =CGRectMake(20,80,width,height);
[self.view.layer insertSublayer:self.preview atIndex:0];
// Start
[_session startRunning];
}
#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;
}
[_session stopRunning];
[self.preview removeFromSuperlayer];
hasExsitTimer = NO;
NSData *stringData = [stringValue dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *valueDictionary = [NSJSONSerialization JSONObjectWithData:stringData options:NSJSONReadingMutableContainers error:nil];
if ([valueDictionary[@"identifier"] isEqualToString:@"weyee"]) {
CardInfoViewController * cardInfoCtl = [[CardInfoViewController alloc] init];
cardInfoCtl.type = kControllerType_Keep;
cardInfoCtl.value = valueDictionary;
[self.navigationController pushViewController:cardInfoCtl animated:YES];
}else{
[self.navigationController popToRootViewControllerAnimated:YES];
}
}
- (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.
}
*/
@end
