LBXScanViewController.m 8.7 KB

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  1. //
  2. //
  3. //
  4. //
  5. // Created by lbxia on 15/10/21.
  6. // Copyright © 2015年 lbxia. All rights reserved.
  7. //
  8. #import "LBXScanViewController.h"
  9. #import <AssetsLibrary/AssetsLibrary.h>
  10. #import <Photos/Photos.h>
  11. @interface LBXScanViewController ()
  12. @end
  13. @implementation LBXScanViewController
  14. - (void)viewDidLoad {
  15. [super viewDidLoad];
  16. // Do any additional setup after loading the view.
  17. if ([self respondsToSelector:@selector(setEdgesForExtendedLayout:)]) {
  18. self.edgesForExtendedLayout = UIRectEdgeNone;
  19. }
  20. self.view.backgroundColor = [UIColor blackColor];
  21. self.title = @"二维码/条形码";
  22. }
  23. - (void)viewDidAppear:(BOOL)animated
  24. {
  25. [super viewDidAppear:animated];
  26. [self drawScanView];
  27. [self requestCameraPemissionWithResult:^(BOOL granted) {
  28. if (granted) {
  29. //不延时,可能会导致界面黑屏并卡住一会
  30. [self performSelector:@selector(startScan) withObject:nil afterDelay:0.3];
  31. }else{
  32. [_qRScanView stopDeviceReadying];
  33. }
  34. }];
  35. }
  36. //绘制扫描区域
  37. - (void)drawScanView
  38. {
  39. if (!_qRScanView)
  40. {
  41. CGRect rect = self.view.frame;
  42. rect.origin = CGPointMake(0, 0);
  43. self.qRScanView = [[LBXScanView alloc]initWithFrame:rect style:_style];
  44. [self.view addSubview:_qRScanView];
  45. }
  46. if (!_cameraInvokeMsg) {
  47. // _cameraInvokeMsg = NSLocalizedString(@"wating...", nil);
  48. }
  49. [_qRScanView startDeviceReadyingWithText:_cameraInvokeMsg];
  50. }
  51. - (void)reStartDevice
  52. {
  53. switch (_libraryType) {
  54. case SLT_Native:
  55. {
  56. [_scanObj startScan];
  57. }
  58. break;
  59. default:
  60. break;
  61. }
  62. }
  63. //启动设备
  64. - (void)startScan
  65. {
  66. UIView *videoView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.view.frame), CGRectGetHeight(self.view.frame))];
  67. videoView.backgroundColor = [UIColor clearColor];
  68. [self.view insertSubview:videoView atIndex:0];
  69. __weak __typeof(self) weakSelf = self;
  70. switch (_libraryType) {
  71. case SLT_Native:
  72. {
  73. if (!_scanObj )
  74. {
  75. CGRect cropRect = CGRectZero;
  76. if (_isOpenInterestRect) {
  77. //设置只识别框内区域
  78. cropRect = [LBXScanView getScanRectWithPreView:self.view style:_style];
  79. }
  80. NSString *strCode = AVMetadataObjectTypeQRCode;
  81. if (_scanCodeType != SCT_BarCodeITF ) {
  82. strCode = [self nativeCodeWithType:_scanCodeType];
  83. }
  84. //AVMetadataObjectTypeITF14Code 扫码效果不行,另外只能输入一个码制,虽然接口是可以输入多个码制
  85. self.scanObj = [[LBXScanNative alloc]initWithPreView:videoView ObjectType:@[strCode] cropRect:cropRect success:^(NSArray<LBXScanResult *> *array) {
  86. [weakSelf scanResultWithArray:array];
  87. }];
  88. [_scanObj setNeedCaptureImage:_isNeedScanImage];
  89. }
  90. [_scanObj startScan];
  91. }
  92. break;
  93. default:
  94. break;
  95. }
  96. [_qRScanView stopDeviceReadying];
  97. [_qRScanView startScanAnimation];
  98. self.view.backgroundColor = [UIColor clearColor];
  99. }
  100. - (void)viewWillDisappear:(BOOL)animated
  101. {
  102. [super viewWillDisappear:animated];
  103. [NSObject cancelPreviousPerformRequestsWithTarget:self];
  104. [self stopScan];
  105. [_qRScanView stopScanAnimation];
  106. }
  107. - (void)stopScan
  108. {
  109. switch (_libraryType) {
  110. case SLT_Native:
  111. {
  112. [_scanObj stopScan];
  113. }
  114. break;
  115. default:
  116. break;
  117. }
  118. }
  119. #pragma mark -扫码结果处理
  120. - (void)scanResultWithArray:(NSArray<LBXScanResult*>*)array
  121. {
  122. //设置了委托的处理
  123. if (_delegate) {
  124. [_delegate scanResultWithArray:array];
  125. }
  126. //也可以通过继承LBXScanViewController,重写本方法即可
  127. }
  128. //开关闪光灯
  129. - (void)openOrCloseFlash
  130. {
  131. switch (_libraryType) {
  132. case SLT_Native:
  133. {
  134. [_scanObj changeTorch];
  135. }
  136. break;
  137. default:
  138. break;
  139. }
  140. self.isOpenFlash =!self.isOpenFlash;
  141. }
  142. #pragma mark --打开相册并识别图片
  143. /*!
  144. * 打开本地照片,选择图片识别
  145. */
  146. - (void)openLocalPhoto:(BOOL)allowsEditing
  147. {
  148. UIImagePickerController *picker = [[UIImagePickerController alloc] init];
  149. picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
  150. picker.delegate = self;
  151. //部分机型有问题
  152. picker.allowsEditing = allowsEditing;
  153. [self presentViewController:picker animated:YES completion:nil];
  154. }
  155. //当选择一张图片后进入这里
  156. -(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
  157. {
  158. [picker dismissViewControllerAnimated:YES completion:nil];
  159. __block UIImage* image = [info objectForKey:UIImagePickerControllerEditedImage];
  160. if (!image){
  161. image = [info objectForKey:UIImagePickerControllerOriginalImage];
  162. }
  163. __weak __typeof(self) weakSelf = self;
  164. switch (_libraryType) {
  165. case SLT_Native:
  166. {
  167. if ([[[UIDevice currentDevice]systemVersion]floatValue] >= 8.0)
  168. {
  169. [LBXScanNative recognizeImage:image success:^(NSArray<LBXScanResult *> *array) {
  170. [weakSelf scanResultWithArray:array];
  171. }];
  172. }
  173. else
  174. {
  175. [self showError:@"native低于ios8.0系统不支持识别图片条码"];
  176. }
  177. }
  178. break;
  179. case SLT_ZXing:
  180. {
  181. }
  182. break;
  183. case SLT_ZBar:
  184. {
  185. }
  186. break;
  187. default:
  188. break;
  189. }
  190. }
  191. - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
  192. {
  193. NSLog(@"cancel");
  194. [picker dismissViewControllerAnimated:YES completion:nil];
  195. }
  196. - (NSString*)nativeCodeWithType:(SCANCODETYPE)type
  197. {
  198. switch (type) {
  199. case SCT_QRCode:
  200. return AVMetadataObjectTypeQRCode;
  201. break;
  202. case SCT_BarCode93:
  203. return AVMetadataObjectTypeCode93Code;
  204. break;
  205. case SCT_BarCode128:
  206. return AVMetadataObjectTypeCode128Code;
  207. break;
  208. case SCT_BarCodeITF:
  209. return @"ITF条码:only ZXing支持";
  210. break;
  211. case SCT_BarEAN13:
  212. return AVMetadataObjectTypeEAN13Code;
  213. break;
  214. default:
  215. return AVMetadataObjectTypeQRCode;
  216. break;
  217. }
  218. }
  219. - (void)showError:(NSString*)str
  220. {
  221. }
  222. - (void)requestCameraPemissionWithResult:(void(^)( BOOL granted))completion
  223. {
  224. if ([AVCaptureDevice respondsToSelector:@selector(authorizationStatusForMediaType:)])
  225. {
  226. AVAuthorizationStatus permission =
  227. [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
  228. switch (permission) {
  229. case AVAuthorizationStatusAuthorized:
  230. completion(YES);
  231. break;
  232. case AVAuthorizationStatusDenied:
  233. case AVAuthorizationStatusRestricted:
  234. completion(NO);
  235. break;
  236. case AVAuthorizationStatusNotDetermined:
  237. {
  238. [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo
  239. completionHandler:^(BOOL granted) {
  240. dispatch_async(dispatch_get_main_queue(), ^{
  241. if (granted) {
  242. completion(true);
  243. } else {
  244. completion(false);
  245. }
  246. });
  247. }];
  248. }
  249. break;
  250. }
  251. }
  252. }
  253. + (BOOL)photoPermission
  254. {
  255. if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0)
  256. {
  257. ALAuthorizationStatus author = [ALAssetsLibrary authorizationStatus];
  258. if ( author == ALAuthorizationStatusDenied ) {
  259. return NO;
  260. }
  261. return YES;
  262. }
  263. PHAuthorizationStatus authorStatus = [PHPhotoLibrary authorizationStatus];
  264. if ( authorStatus == PHAuthorizationStatusDenied ) {
  265. return NO;
  266. }
  267. return YES;
  268. }
  269. @end