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Add comprehensive regex-based barcode filtering system (v1.29)
 🔍 Advanced Barcode Filtering System • Implemented real-time regex pattern matching for selective barcode capture • Added foldable "Filtering" section in settings with enable checkbox and regex input • Integrated filtering with SharedPreferences and managed configuration support • Enhanced camera activity with live regex validation during barcode detection ⚙️ Filtering Capabilities • Numeric-only filtering for UPC/EAN codes • URL pattern matching for QR codes • Product code format validation • Serial number filtering • Custom regex pattern support 📚 Comprehensive Documentation • Created extensive regex pattern library (16-Common-Regex-Expressions.md) • Added 200+ regex patterns for: - Web URLs, IP addresses, MAC addresses - Protocol-specific URIs (FTP, SSH, SMTP, etc.) - Android system schemes and popular app deep links - Government IDs and social security numbers (22 countries) - Device identifiers (IMEI, phone numbers) - Industry standards (ISBN, ISIN, UPC, etc.) • Updated Android configuration guide with filtering setup • Added symbologies reference table with 46+ barcode types 🛠 Technical Implementation • Constants.java: Added filtering preference constants • SettingsActivity.java: Implemented filtering UI and persistence • CameraXLivePreviewActivity.java: Added real-time regex filtering • ManagedConfigurationReceiver.java: Enterprise filtering configuration • app_restrictions.xml: Updated managed config schema • Updated strings.xml and activity_setup.xml for UI components 🏢 Enterprise Features • Full MDM/EMM integration for remote filtering configuration • Real-time policy updates without app restart • Robust error handling with fallback behavior • Performance-optimized regex processing This release transforms the application into a precision tool for selective barcode capture, perfect for quality control, inventory management, and specialized data collection workflows. Files modified: - README.md, CHANGELOG.md (version documentation) - Constants.java, SettingsActivity.java, CameraXLivePreviewActivity.java - ManagedConfigurationReceiver.java, app_restrictions.xml - strings.xml, activity_setup.xml, arrays.xml - wiki/07-Android-App-Configuration.md - wiki/16-Common-Regex-Expressions.md (new)
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lines changed

‎AI_MultiBarcodes_Capture/build.gradle.kts‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -14,8 +14,8 @@ android {
1414
applicationId = "com.zebra.ai_multibarcodes_capture.dev"
1515
minSdk = 34
1616
targetSdk = 35
17-
versionCode = 28
18-
versionName = "1.28"
17+
versionCode = 29
18+
versionName = "1.29"
1919

2020
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
2121
}

‎AI_MultiBarcodes_Capture/src/main/java/com/zebra/ai_multibarcodes_capture/helpers/Constants.java‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -220,4 +220,11 @@ public class Constants {
220220
public static final String SHARED_PREFERENCES_HTTPS_ENDPOINT = "SHARED_PREFERENCES_HTTPS_ENDPOINT";
221221
public static final String SHARED_PREFERENCES_HTTPS_ENDPOINT_DEFAULT = "";
222222

223+
// Filtering preferences
224+
public static final String SHARED_PREFERENCES_FILTERING_ENABLED = "SHARED_PREFERENCES_FILTERING_ENABLED";
225+
public static final boolean SHARED_PREFERENCES_FILTERING_ENABLED_DEFAULT = false;
226+
227+
public static final String SHARED_PREFERENCES_FILTERING_REGEX = "SHARED_PREFERENCES_FILTERING_REGEX";
228+
public static final String SHARED_PREFERENCES_FILTERING_REGEX_DEFAULT = "";
229+
223230
}

‎AI_MultiBarcodes_Capture/src/main/java/com/zebra/ai_multibarcodes_capture/java/CameraXLivePreviewActivity.java‎

Lines changed: 85 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -142,6 +142,10 @@ public void run() {
142142
private ImageView flashlightToggleIcon;
143143
private CaptureZoneOverlay captureZoneOverlay;
144144
private boolean isFlashlightOn = false;
145+
146+
// Filtering settings
147+
private boolean isFilteringEnabled = false;
148+
private String filteringRegex = "";
145149

146150
private BarcodeTracker barcodeTracker;
147151
private EntityBarcodeTracker entityBarcodeTracker;
@@ -394,44 +398,44 @@ private void loadCaptureZoneSettings() {
394398

395399
private void loadFlashlightSettings() {
396400
LogUtils.d(TAG, "=== loadFlashlightSettings() START ===");
397-
401+
398402
// Load flashlight enabled state
399403
boolean wasFlashlightEnabled = PreferencesHelper.isFlashlightEnabled(this);
400-
404+
401405
LogUtils.d(TAG, "Loaded flashlight state from preferences: " + wasFlashlightEnabled);
402406
LogUtils.d(TAG, "Current camera state: " + (camera != null ? "available" : "null"));
403407
LogUtils.d(TAG, "Camera has flash unit: " + (camera != null && camera.getCameraInfo().hasFlashUnit()));
404408
LogUtils.d(TAG, "Current isFlashlightOn field: " + isFlashlightOn);
405409
LogUtils.d(TAG, "flashlightToggleIcon: " + (flashlightToggleIcon != null ? "available" : "null"));
406-
410+
407411
if (wasFlashlightEnabled && camera != null && camera.getCameraInfo().hasFlashUnit()) {
408412
LogUtils.d(TAG, "Conditions met - restoring flashlight to ON state");
409413
isFlashlightOn = true;
410-
414+
411415
try {
412416
camera.getCameraControl().enableTorch(true);
413417
LogUtils.d(TAG, "Camera torch enabled successfully");
414418
} catch (Exception e) {
415419
LogUtils.e(TAG, "Failed to enable camera torch", e);
416420
}
417-
421+
418422
// Update icon to reflect restored state
419423
if (flashlightToggleIcon != null) {
420424
flashlightToggleIcon.setImageResource(R.drawable.flashlight_on_icon);
421425
LogUtils.d(TAG, "Updated icon to flashlight_on_icon");
422426
} else {
423427
LogUtils.w(TAG, "Cannot update icon - flashlightToggleIcon is null");
424428
}
425-
429+
426430
LogUtils.d(TAG, "Flashlight restored to ON state");
427431
} else {
428432
LogUtils.d(TAG, "Conditions not met - setting flashlight to OFF state");
429-
LogUtils.d(TAG, "Reason: wasEnabled=" + wasFlashlightEnabled +
430-
", camera=" + (camera != null) +
433+
LogUtils.d(TAG, "Reason: wasEnabled=" + wasFlashlightEnabled +
434+
", camera=" + (camera != null) +
431435
", hasFlash=" + (camera != null && camera.getCameraInfo().hasFlashUnit()));
432-
436+
433437
isFlashlightOn = false;
434-
438+
435439
if (camera != null && camera.getCameraInfo().hasFlashUnit()) {
436440
try {
437441
camera.getCameraControl().enableTorch(false);
@@ -440,22 +444,60 @@ private void loadFlashlightSettings() {
440444
LogUtils.e(TAG, "Failed to disable camera torch", e);
441445
}
442446
}
443-
447+
444448
// Update icon to reflect off state
445449
if (flashlightToggleIcon != null) {
446450
flashlightToggleIcon.setImageResource(R.drawable.flashlight_off_icon);
447451
LogUtils.d(TAG, "Updated icon to flashlight_off_icon");
448452
} else {
449453
LogUtils.w(TAG, "Cannot update icon - flashlightToggleIcon is null");
450454
}
451-
455+
452456
LogUtils.d(TAG, "Flashlight set to OFF state");
453457
}
454-
458+
455459
LogUtils.d(TAG, "Final isFlashlightOn field value: " + isFlashlightOn);
456460
LogUtils.d(TAG, "=== loadFlashlightSettings() END ===");
457461
}
458462

463+
private void loadFilteringSettings() {
464+
LogUtils.d(TAG, "=== loadFilteringSettings() START ===");
465+
466+
// Get the SharedPreferences object
467+
SharedPreferences sharedPreferences = getSharedPreferences(getPackageName(), Context.MODE_PRIVATE);
468+
469+
// Load filtering enabled state
470+
isFilteringEnabled = sharedPreferences.getBoolean(Constants.SHARED_PREFERENCES_FILTERING_ENABLED, Constants.SHARED_PREFERENCES_FILTERING_ENABLED_DEFAULT);
471+
472+
// Load filtering regex pattern
473+
filteringRegex = sharedPreferences.getString(Constants.SHARED_PREFERENCES_FILTERING_REGEX, Constants.SHARED_PREFERENCES_FILTERING_REGEX_DEFAULT);
474+
475+
LogUtils.d(TAG, "Loaded filtering settings - enabled: " + isFilteringEnabled + ", regex: '" + filteringRegex + "'");
476+
LogUtils.d(TAG, "=== loadFilteringSettings() END ===");
477+
}
478+
479+
private boolean isValueMatchingFilteringRegex(String data)
480+
{
481+
if(isFilteringEnabled && filteringRegex.isEmpty() == false)
482+
{
483+
try {
484+
// Check if data matches the filteringRegex pattern
485+
boolean matches = data.matches(filteringRegex);
486+
LogUtils.v(TAG, "Regex filtering - Data: '" + data + "', Pattern: '" + filteringRegex + "', Matches: " + matches);
487+
return matches;
488+
} catch (Exception e) {
489+
// If regex is invalid, log error and allow the barcode through
490+
LogUtils.e(TAG, "Invalid regex pattern '" + filteringRegex + "': " + e.getMessage());
491+
return true;
492+
}
493+
}
494+
else
495+
{
496+
// If filtering is disabled, return always true
497+
return true;
498+
}
499+
}
500+
459501
private boolean isBarcodeInCaptureZone(Rect overlayRect) {
460502
// If capture zone is not enabled or overlay is not available, allow all barcodes
461503
if (captureZoneOverlay == null || !captureZoneOverlay.isVisible()) {
@@ -696,16 +738,25 @@ public void handleEntities(EntityTrackerAnalyzer.Result result) {
696738

697739
// Only process barcode if it's inside the capture zone (when capture zone is enabled)
698740
if (isBarcodeInCaptureZone(overlayRect)) {
699-
rects.add(overlayRect);
700-
String hashCode = String.valueOf(bEntity.hashCode());
701-
// Ensure the string has at least 4 characters
702-
if (hashCode.length() >= 4) {
703-
// Get the last four digits
704-
hashCode = hashCode.substring(hashCode.length() - 4);
705-
741+
// Check if the entity is matching the filtering regex
742+
// If the filtering is not enabled, it returns always true
743+
if(isValueMatchingFilteringRegex(bEntity.getValue())) {
744+
// Now if necessary, check if the barcode meets the
745+
rects.add(overlayRect);
746+
String hashCode = String.valueOf(bEntity.hashCode());
747+
// Ensure the string has at least 4 characters
748+
if (hashCode.length() >= 4) {
749+
// Get the last four digits
750+
hashCode = hashCode.substring(hashCode.length() - 4);
751+
752+
}
753+
decodedStrings.add(bEntity.getValue());
754+
LogUtils.d(TAG, "Tracker UUID: " + hashCode + " Tracker Detected entity - Value: " + bEntity.getValue());
755+
}
756+
else
757+
{
758+
LogUtils.v(TAG, "Barcode does not match regex, ignoring: " + bEntity.getValue());
706759
}
707-
decodedStrings.add(bEntity.getValue());
708-
LogUtils.d(TAG, "Tracker UUID: " + hashCode + " Tracker Detected entity - Value: " + bEntity.getValue());
709760
} else {
710761
LogUtils.v(TAG, "Barcode outside capture zone, ignoring: " + bEntity.getValue());
711762
}
@@ -826,7 +877,10 @@ public void onResume() {
826877
LogUtils.d(TAG, "onResume - CaptureZoneOverlay dimensions: " + captureZoneOverlay.getWidth() + "x" + captureZoneOverlay.getHeight());
827878
loadCaptureZoneSettings();
828879
}
829-
880+
881+
// Load filtering settings
882+
loadFilteringSettings();
883+
830884
// Flashlight settings are now loaded after camera is bound in bindPreviewUseCase()
831885

832886
int currentRotation = getWindowManager().getDefaultDisplay().getRotation();
@@ -897,8 +951,14 @@ private void captureData() {
897951
if (boundingBox != null) {
898952
Rect overlayRect = mapBoundingBoxToOverlay(boundingBox);
899953
if (isBarcodeInCaptureZone(overlayRect)) {
900-
barcodeEntities.add(bEntity);
901-
LogUtils.d(TAG, "Barcode captured.\nValue:" + bEntity.getValue() + "\nSymbology:" + bEntity.getSymbology() + "\nHashcode:" + bEntity.hashCode());
954+
if(isValueMatchingFilteringRegex(bEntity.getValue())) {
955+
barcodeEntities.add(bEntity);
956+
LogUtils.d(TAG, "Barcode captured.\nValue:" + bEntity.getValue() + "\nSymbology:" + bEntity.getSymbology() + "\nHashcode:" + bEntity.hashCode());
957+
}
958+
else
959+
{
960+
LogUtils.d(TAG,"Barcode does not match filtering regex:" + filteringRegex + " with value:" + bEntity.getValue());
961+
}
902962
} else {
903963
LogUtils.d(TAG, "Barcode outside capture zone, not captured: " + bEntity.getValue());
904964
}

‎AI_MultiBarcodes_Capture/src/main/java/com/zebra/ai_multibarcodes_capture/managedconfig/ManagedConfigurationReceiver.java‎

Lines changed: 55 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -88,6 +88,23 @@ private void updateSharedPreferences(Context context, Bundle restrictions) {
8888
}
8989
}
9090

91+
// Update processing mode if provided
92+
if (restrictions.containsKey("processing_mode")) {
93+
String processingMode = restrictions.getString("processing_mode");
94+
if (processingMode != null && !processingMode.trim().isEmpty()) {
95+
editor.putString(Constants.SHARED_PREFERENCES_PROCESSING_MODE, processingMode);
96+
LogUtils.d(TAG, "Updated processing_mode: " + processingMode);
97+
}
98+
}
99+
100+
// Update HTTPS configuration from nested bundle
101+
if (restrictions.containsKey("https_configuration")) {
102+
Bundle httpsConfig = restrictions.getBundle("https_configuration");
103+
if (httpsConfig != null) {
104+
updateHttpsConfiguration(editor, httpsConfig);
105+
}
106+
}
107+
91108
// Update advanced settings from nested bundle
92109
if (restrictions.containsKey("advanced_settings")) {
93110
Bundle advancedSettings = restrictions.getBundle("advanced_settings");
@@ -96,6 +113,14 @@ private void updateSharedPreferences(Context context, Bundle restrictions) {
96113
}
97114
}
98115

116+
// Update filtering settings from nested bundle
117+
if (restrictions.containsKey("filtering_settings")) {
118+
Bundle filteringSettings = restrictions.getBundle("filtering_settings");
119+
if (filteringSettings != null) {
120+
updateFilteringSettings(editor, filteringSettings);
121+
}
122+
}
123+
99124
// Apply all changes atomically
100125
editor.apply();
101126
LogUtils.d(TAG, "Successfully updated SharedPreferences with managed configuration");
@@ -233,17 +258,44 @@ private void updateStringSetting(SharedPreferences.Editor editor, Bundle bundle,
233258
}
234259
}
235260

261+
/**
262+
* Updates HTTPS configuration preferences from the nested bundle
263+
* @param editor SharedPreferences editor
264+
* @param httpsConfig Bundle containing HTTPS configuration settings
265+
*/
266+
private void updateHttpsConfiguration(SharedPreferences.Editor editor, Bundle httpsConfig) {
267+
LogUtils.d(TAG, "Updating HTTPS configuration from managed configuration");
268+
269+
// Update HTTPS endpoint
270+
updateStringSetting(editor, httpsConfig, "https_endpoint", Constants.SHARED_PREFERENCES_HTTPS_ENDPOINT);
271+
}
272+
273+
/**
274+
* Updates filtering settings preferences from the nested bundle
275+
* @param editor SharedPreferences editor
276+
* @param filteringSettings Bundle containing filtering settings
277+
*/
278+
private void updateFilteringSettings(SharedPreferences.Editor editor, Bundle filteringSettings) {
279+
LogUtils.d(TAG, "Updating filtering settings from managed configuration");
280+
281+
// Update filtering enabled setting
282+
updateBooleanSetting(editor, filteringSettings, "filtering_enabled", Constants.SHARED_PREFERENCES_FILTERING_ENABLED);
283+
284+
// Update filtering regex
285+
updateStringSetting(editor, filteringSettings, "filtering_regex", Constants.SHARED_PREFERENCES_FILTERING_REGEX);
286+
}
287+
236288
/**
237289
* Public method to manually apply managed configuration
238290
* This can be called during app startup to ensure current restrictions are applied
239291
* @param context Application context
240292
*/
241293
public static void applyManagedConfiguration(Context context) {
242294
LogUtils.d(TAG, "Manually applying managed configuration");
243-
244-
RestrictionsManager restrictionsManager =
295+
296+
RestrictionsManager restrictionsManager =
245297
(RestrictionsManager) context.getSystemService(Context.RESTRICTIONS_SERVICE);
246-
298+
247299
if (restrictionsManager != null) {
248300
Bundle restrictions = restrictionsManager.getApplicationRestrictions();
249301
if (restrictions != null && !restrictions.isEmpty()) {

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