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Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Large diffs are not rendered by default.
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// | ||
// LAQRScannerViewController.h | ||
// lottie-ios | ||
// | ||
// Created by brandon_withrow on 7/27/17. | ||
// Copyright © 2017 Brandon Withrow. All rights reserved. | ||
// | ||
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#import <UIKit/UIKit.h> | ||
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@interface LAQRScannerViewController : UIViewController | ||
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@property (nonatomic, copy) void (^completionBlock)(NSString *jsonURL); | ||
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@end |
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// | ||
// LAQRScannerViewController.m | ||
// lottie-ios | ||
// | ||
// Created by brandon_withrow on 7/27/17. | ||
// Copyright © 2017 Brandon Withrow. All rights reserved. | ||
// | ||
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#import "LAQRScannerViewController.h" | ||
#import <AVFoundation/AVFoundation.h> | ||
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@interface LAQRScannerViewController () <AVCaptureMetadataOutputObjectsDelegate> | ||
@property (nonatomic) BOOL isReading; | ||
@property (strong, nonatomic) UIView *viewPreview; | ||
@property (nonatomic, strong) AVCaptureSession *captureSession; | ||
@property (nonatomic, strong) AVCaptureVideoPreviewLayer *videoPreviewLayer; | ||
@end | ||
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@implementation LAQRScannerViewController | ||
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- (void)viewDidLoad { | ||
[super viewDidLoad]; | ||
self.view.backgroundColor = [UIColor whiteColor]; | ||
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" | ||
style:UIBarButtonItemStyleDone | ||
target:self | ||
action:@selector(_closePressed)]; | ||
self.viewPreview = [[UIView alloc] initWithFrame:self.view.bounds]; | ||
self.viewPreview.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; | ||
[self.view addSubview:self.viewPreview]; | ||
_isReading = NO; | ||
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_captureSession = nil; | ||
} | ||
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- (void)viewDidAppear:(BOOL)animated { | ||
[super viewDidAppear:animated]; | ||
if (!_isReading) { | ||
_isReading = [self startReading]; | ||
} | ||
} | ||
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- (BOOL)startReading { | ||
NSError *error; | ||
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AVCaptureDevice *captureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; | ||
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AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:captureDevice error:&error]; | ||
if (!input) { | ||
NSLog(@"%@", [error localizedDescription]); | ||
return NO; | ||
} | ||
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_captureSession = [[AVCaptureSession alloc] init]; | ||
[_captureSession addInput:input]; | ||
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AVCaptureMetadataOutput *captureMetadataOutput = [[AVCaptureMetadataOutput alloc] init]; | ||
[_captureSession addOutput:captureMetadataOutput]; | ||
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dispatch_queue_t dispatchQueue; | ||
dispatchQueue = dispatch_queue_create("myQueue", NULL); | ||
[captureMetadataOutput setMetadataObjectsDelegate:self queue:dispatchQueue]; | ||
[captureMetadataOutput setMetadataObjectTypes:[NSArray arrayWithObject:AVMetadataObjectTypeQRCode]]; | ||
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if (_videoPreviewLayer) { | ||
[_videoPreviewLayer removeFromSuperlayer]; | ||
_videoPreviewLayer = nil; | ||
} | ||
_videoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:_captureSession]; | ||
[_videoPreviewLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill]; | ||
[_videoPreviewLayer setFrame:_viewPreview.layer.bounds]; | ||
[_viewPreview.layer addSublayer:_videoPreviewLayer]; | ||
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[_captureSession startRunning]; | ||
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return YES; | ||
} | ||
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-(void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection{ | ||
if (metadataObjects != nil && [metadataObjects count] > 0) { | ||
AVMetadataMachineReadableCodeObject *metadataObj = [metadataObjects objectAtIndex:0]; | ||
if ([[metadataObj type] isEqualToString:AVMetadataObjectTypeQRCode]) { | ||
[self performSelectorOnMainThread:@selector(stopReadingWithString:) withObject:[metadataObj stringValue] waitUntilDone:NO]; | ||
} | ||
} | ||
} | ||
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- (void)stopReadingWithString:(NSString *)urlString { | ||
if (_isReading) { | ||
_isReading = NO; | ||
[_captureSession stopRunning]; | ||
_captureSession = nil; | ||
[_videoPreviewLayer removeFromSuperlayer]; | ||
_videoPreviewLayer = nil; | ||
if (self.completionBlock) { | ||
self.completionBlock(urlString); | ||
} | ||
} | ||
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} | ||
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- (void)_closePressed { | ||
[self stopReadingWithString:nil]; | ||
} | ||
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@end |
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.