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| - (ALExample *)exampleForIndexPath:(NSIndexPath *)indexPath; | ||
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| @end | ||
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| extern NSString * const processTitle; | ||
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9 changes: 9 additions & 0 deletions
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...les/Anyline Examples Source/CompositeScanning/ALParallelMeterWithJSONScanViewController.h
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| #import "ALBaseScanViewController.h" | ||
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| NS_ASSUME_NONNULL_BEGIN | ||
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| @interface ALParallelMeterWithJSONScanViewController : ALBaseScanViewController | ||
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| @end | ||
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| NS_ASSUME_NONNULL_END |
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...les/Anyline Examples Source/CompositeScanning/ALParallelMeterWithJSONScanViewController.m
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| #import "ALParallelMeterWithJSONScanViewController.h" | ||
| #import "UIViewController+ALExamplesAdditions.h" | ||
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| const bool parallel_scan_view_uses_json_config_for_setup = true; | ||
| NSString * const parallel_scan_plugin_config_json_filename = @"meter_barcode_parallel"; // without the .json extension | ||
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| @interface ALParallelMeterWithJSONScanViewController () <ALBarcodeScanPluginDelegate, ALMeterScanPluginDelegate, ALCompositeScanPluginDelegate> | ||
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| @property (nonatomic, strong) ALMeterScanViewPlugin *meterScanViewPlugin; | ||
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| @property (nonatomic, strong) ALBarcodeScanViewPlugin *barcodeScanViewPlugin; | ||
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| @property (nonatomic, strong) ALParallelScanViewPluginComposite *parallelScanViewPlugin; | ||
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| @property (nonatomic, strong) ALScanView *scanView; | ||
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| @end | ||
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| @implementation ALParallelMeterWithJSONScanViewController | ||
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| - (void)viewDidLoad { | ||
| [super viewDidLoad]; | ||
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| self.title = @"Parallel Meter and Barcode Scanning"; | ||
| [self setupAndStartPlugins]; | ||
| } | ||
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| - (void)setupAndStartPlugins { | ||
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| if (parallel_scan_view_uses_json_config_for_setup) { | ||
| [self setupPluginsWithJSON]; | ||
| } else { | ||
| [self setupPluginsWithManually]; | ||
| } | ||
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| NSAssert(self.parallelScanViewPlugin, @"parallelScanViewPlugin was not set up properly!"); | ||
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| self.scanView = [[ALScanView alloc] initWithFrame:[self scanViewFrame] | ||
| scanViewPlugin:self.parallelScanViewPlugin]; | ||
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| [self.view addSubview:self.scanView]; | ||
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| [self.scanView startCamera]; | ||
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| [self.parallelScanViewPlugin startAndReturnError:nil]; | ||
| } | ||
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| - (void)setupPluginsWithJSON { | ||
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| NSError *error = nil; | ||
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| // NOTE: we made an assumption here that the JSON is an appropriately-defined config of | ||
| // a parallel scan view with two members: a barcode scan plugin and a meter scan plugin. | ||
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| self.parallelScanViewPlugin = (ALParallelScanViewPluginComposite *)[ALAbstractScanViewPluginComposite | ||
| scanViewPluginForConfigDict:self.configDict | ||
| delegate:self | ||
| error:&error]; | ||
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| for (ALAbstractScanViewPlugin *scanPlugin in self.parallelScanViewPlugin.childPlugins) { | ||
| if ([scanPlugin isKindOfClass:ALBarcodeScanViewPlugin.class]) { | ||
| self.barcodeScanViewPlugin = (ALBarcodeScanViewPlugin *)scanPlugin; | ||
| } else if ([scanPlugin isKindOfClass:ALMeterScanViewPlugin.class]) { | ||
| self.meterScanViewPlugin = (ALMeterScanViewPlugin *)scanPlugin; | ||
| } | ||
| } | ||
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| // (Optional) If desired, you may set scan delegates for individual scan view plugins, | ||
| // allowing you to read scan results individually as they detected: | ||
| NSAssert(self.barcodeScanViewPlugin != nil, @"barcodeScanViewPlugin should not be nil"); | ||
| NSAssert(self.meterScanViewPlugin != nil, @"meterScanViewPlugin should not be nil"); | ||
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| [self.barcodeScanViewPlugin.barcodeScanPlugin addDelegate:self]; | ||
| [self.meterScanViewPlugin.meterScanPlugin addDelegate:self]; | ||
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| } | ||
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| - (void)setupPluginsWithManually { | ||
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| // you can set up the parallel scan without a JSON config file, if you wish. | ||
| NSError *error = nil; | ||
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| // Meter Plugin | ||
| ALMeterScanPlugin *meterScanPlugin = [[ALMeterScanPlugin alloc] initWithPluginID:@"METER" | ||
| delegate:self | ||
| error:&error]; | ||
| self.meterScanViewPlugin = [[ALMeterScanViewPlugin alloc] initWithScanPlugin:meterScanPlugin]; | ||
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| // Barcode Plugin | ||
| ALBarcodeScanPlugin *barcodeScanPlugin = [[ALBarcodeScanPlugin alloc] initWithPluginID:@"BARCODE" | ||
| delegate:self | ||
| error:&error]; | ||
| [barcodeScanPlugin setBarcodeFormatOptions:@[ kCodeTypeAll ]]; | ||
| self.barcodeScanViewPlugin = [[ALBarcodeScanViewPlugin alloc] | ||
| initWithScanPlugin:barcodeScanPlugin]; | ||
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| // Parallel Scan View Plugin | ||
| self.parallelScanViewPlugin = [[ALParallelScanViewPluginComposite alloc] | ||
| initWithPluginID:@"Energy and Meter Parallel"]; | ||
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| // (Optional) - make certain child plugins return without a scan result after a timeout | ||
| // | ||
| // A timeout delay determines how long the parallel plugin waits for any "optional" | ||
| // child plugins to be scanned, before ignoring them. After all non-optional child plugins | ||
| // have already been scanned, the parallel scan plugin waits for an extra, predetermined | ||
| // time period (the so-called timeout delay), and then returns with all the results gathered | ||
| // up to that point through its delegate. NOTE: To use it, at least one child plugin must | ||
| // have been marked as optional when adding to it. Otherwise all child plugins are waited | ||
| // on before the delegate callback is invoked. | ||
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| // When not explicitly set, the default delay is 3.0 seconds. | ||
| self.parallelScanViewPlugin.optionalTimeoutDelay = @3.5; | ||
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| // You can make a member ScanViewPlugin (in this case, for the barcode) by setting its | ||
| // isOptional property to YES. (NOTE: make sure to set this BEFORE it is added to the | ||
| // parallel plugin.) | ||
| self.barcodeScanViewPlugin.isOptional = YES; | ||
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| // Add the component plugins. | ||
| [self.parallelScanViewPlugin addPlugin:self.meterScanViewPlugin]; | ||
| [self.parallelScanViewPlugin addPlugin:self.barcodeScanViewPlugin]; | ||
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| // make oneself a ALCompositeScanPluginDelegate (for the aggregated results) | ||
| [self.parallelScanViewPlugin addDelegate:self]; | ||
| } | ||
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| - (void)displayResults:(NSString *)resultsMsg { | ||
| UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Results" | ||
| message:resultsMsg | ||
| preferredStyle:UIAlertControllerStyleAlert]; | ||
| __weak __block typeof(self) weakSelf = self; | ||
| [alertController addAction:[UIAlertAction actionWithTitle:@"OK" | ||
| style:UIAlertActionStyleDefault | ||
| handler:^(UIAlertAction * _Nonnull action) { | ||
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| [weakSelf.parallelScanViewPlugin startAndReturnError:nil]; | ||
| }]]; | ||
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| [self.navigationController presentViewController:alertController animated:YES completion:nil]; | ||
| } | ||
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| - (NSDictionary * _Nonnull)configDict { | ||
| // read the JSON config file | ||
| NSString *jsonFilePath = [[NSBundle mainBundle] pathForResource:parallel_scan_plugin_config_json_filename | ||
| ofType:@"json"]; | ||
| NSData *data = [NSData dataWithContentsOfFile:jsonFilePath]; | ||
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| NSError *error = nil; | ||
| NSDictionary *configDict = [NSJSONSerialization JSONObjectWithData:data | ||
| options:NSJSONReadingMutableContainers | ||
| error:&error]; | ||
| NSAssert(configDict != nil, @"unable to read configuration JSON file!"); | ||
| return configDict; | ||
| } | ||
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| // MARK: - ALCompositeScanPluginDelegate | ||
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| - (void)anylineCompositeScanPlugin:(ALAbstractScanViewPluginComposite * _Nonnull)anylineCompositeScanPlugin | ||
| didFindResult:(ALCompositeResult * _Nonnull)scanResult { | ||
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| // this method is executed when all 'required' component plugins have | ||
| // been scanned. | ||
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| NSMutableArray<NSString *> *resultStrs = [NSMutableArray arrayWithCapacity:2]; | ||
| for (NSString *key in scanResult.result.allKeys) { | ||
| id res = scanResult.result[key]; | ||
| if ([res isKindOfClass:ALMeterResult.class]) { | ||
| [resultStrs addObject: | ||
| [NSString stringWithFormat:@"meter result: %@", | ||
| [(ALMeterResult *)res result]] | ||
| ]; | ||
| } else if ([res isKindOfClass:ALBarcodeResult.class]) { | ||
| [resultStrs addObject: | ||
| [NSString stringWithFormat:@"barcode result: %@", | ||
| [(ALBarcodeResult *)res result].firstObject.value] | ||
| ]; | ||
| } | ||
| } | ||
| NSString *message = [resultStrs componentsJoinedByString:@" | "]; | ||
| NSLog(@"Parallel Scan: aggregate result: %@", message); | ||
| [self displayResults:message]; | ||
| } | ||
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| // MARK: - ALBarcodeScanPluginDelegate | ||
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| - (void)anylineBarcodeScanPlugin:(ALBarcodeScanPlugin * _Nonnull)anylineBarcodeScanPlugin | ||
| didFindResult:(ALBarcodeResult * _Nonnull)scanResult { | ||
| NSString *barcodeResultStr = [[scanResult.result firstObject] value]; | ||
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| // by setting a ALBarcodeScanPluginDelegate you can detect a barcode scan before the | ||
| // composite (parallel) plugin delegate is called. | ||
| NSLog(@"Parallel Scan: barcode result: %@", barcodeResultStr); | ||
| } | ||
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| // MARK: - ALMeterScanPluginDelegate | ||
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| - (void)anylineMeterScanPlugin:(ALMeterScanPlugin * _Nonnull)anylineMeterScanPlugin | ||
| didFindResult:(ALMeterResult * _Nonnull)scanResult { | ||
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| // by setting a ALMeterScanPluginDelegate you can detect a meter scan before the | ||
| // composite (parallel) plugin delegate is called. | ||
| NSString *meterResultStr = scanResult.result; | ||
| NSLog(@"Parallel Scan: meter result: %@", meterResultStr); | ||
| } | ||
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| @end |
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