这里我用了系统的东西简单的实现了一下扫描二维码
.h
#import
#import
@interfacesaoMiaoViewController :UIViewController
@property(nonatomic,retain)UIView* sanRectView;
//硬件设备
@property(nonatomic,retain)AVCaptureDevice* device;
//输入设备
@property(nonatomic,retain)AVCaptureDeviceInput* input;
//输出设备
@property(nonatomic,retain)AVCaptureMetadataOutput* outPut;
//桥梁。链接输入和输出设备
@property(nonatomic,retain)AVCaptureSession* session;
@property(nonatomic,retain)AVCaptureVideoPreviewLayer* preView;
@end
接下来看.m文件
@interfacesaoMiaoViewController()
@end
@implementationsaoMiaoViewController
- (void)viewDidLoad {
[superviewDidLoad];
// Do any additional setup after loading the view.
self.title=@"进入连接";
CGSizewindowSize = [UIScreenmainScreen].bounds.size;
CGSizescanSize =CGSizeMake(windowSize.width*3/5, windowSize.width* 3/5);
CGRectscanRect =CGRectMake( ((windowSize.height-scanSize.height)/2)/windowSize.height,((windowSize.width-scanSize.width)/2)/windowSize.width, (scanSize.height+10)/windowSize.height,(scanSize.width+ 10)/windowSize.width);
self.device= [AVCaptureDevicedefaultDeviceWithMediaType:AVMediaTypeVideo];
self.input= [AVCaptureDeviceInputdeviceInputWithDevice:self.deviceerror:nil];
self.outPut= [[AVCaptureMetadataOutputalloc]init];
[self.outPutsetMetadataObjectsDelegate:selfqueue:dispatch_get_main_queue()];
self.session= [[AVCaptureSessionalloc]init];
[self.sessionsetSessionPreset:([UIScreenmainScreen].bounds.size.height<500)?AVCaptureSessionPreset640x480:AVCaptureSessionPresetHigh];
[self.sessionaddInput:self.input];
[self.sessionaddOutput:self.outPut];
self.outPut.metadataObjectTypes=@[AVMetadataObjectTypeQRCode];
self.preView= [AVCaptureVideoPreviewLayerlayerWithSession:self.session];
self.preView.videoGravity=AVLayerVideoGravityResizeAspectFill;
self.preView.frame= [UIScreenmainScreen].bounds;
self.preView.backgroundColor= [UIColorcolorWithRed:1green:1blue:1alpha:0.7].CGColor;
[self.view.layerinsertSublayer:self.preViewatIndex:0];
self.sanRectView= [UIViewnew];
[self.viewaddSubview:self.sanRectView];
self.sanRectView.frame=CGRectMake(0, 0, scanSize.width, scanSize.height);
self.sanRectView.center=CGPointMake(CGRectGetMidX([UIScreenmainScreen].bounds),CGRectGetMidY([UIScreenmainScreen].bounds));
self.sanRectView.layer.borderColor= [UIColorwhiteColor].CGColor;
self.sanRectView.layer.borderWidth= 2;
self.outPut.rectOfInterest=scanRect;
//开始捕获
[self.sessionstartRunning];
}
- (void)captureOutput:(AVCaptureOutput*)captureOutput didOutputMetadataObjects:(NSArray*)metadataObjects fromConnection:(AVCaptureConnection*)connection
{
if( (metadataObjects.count==0) )
{
return;
}
if(metadataObjects.count>0) {
[self.sessionstopRunning];
AVMetadataMachineReadableCodeObject*metadataObject = metadataObjects.firstObject;
SendUrlViewController* send = [[SendUrlViewControlleralloc]init];
send.nameUrl= metadataObject.stringValue;
[self.navigationControllerpushViewController:sendanimated:YES];
}
}
此文纯属个人为了记忆而写。当然要是能帮到别人当然也很开心了A.A