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fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3

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fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
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When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.

Root cause

enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.

Fix

Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:

privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}

All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.

CopilotAI changed the title fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI requested a review from duhowJuly 5, 2026 12:04
CopilotAI changed the title fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI changed the title fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
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✅ Debug APK artifact is ready for commit b64c0b3 .
💾 Download APK artifact here.
Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
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try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing by Copilot · Pull Request #3 · duhow/openbeam · GitHub
Skip to content
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3
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copilot/emulate-ndef-tag-2-compatibility
Draft
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
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CopilotAI
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Jul 5, 2026•

edited

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When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.
Root cause
enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.
Fix
Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:
privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}
All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI
requested a review
from duhowJuly 5, 2026 12:04
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI
changed the title
fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
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✅ Debug APK artifact is ready for commit b64c0b3 .

💾 Download APK artifact here.

Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196
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, 'i');
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// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
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color-scheme: dark light;
}
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing by Copilot · Pull Request #3 · duhow/openbeam · GitHub
Skip to content
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3
Draft
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Draft
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
duhow with Copilot wants to merge 3 commits into
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copilot/emulate-ndef-tag-2-compatibility
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CopilotAI
commented
Jul 5, 2026•

edited

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Contributor
When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.
Root cause
enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.
Fix
Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:
privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}
All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI
requested a review
from duhowJuly 5, 2026 12:04
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI
changed the title
fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
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✅ Debug APK artifact is ready for commit b64c0b3 .

💾 Download APK artifact here.

Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
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if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
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if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
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}
highlight(document.body);
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mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing by Copilot · Pull Request #3 · duhow/openbeam · GitHub
Skip to content
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3
Draft
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Draft
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Conversation
CopilotAI
commented
Jul 5, 2026•

edited

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Contributor
When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.
Root cause
enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.
Fix
Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:
privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}
All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI
requested a review
from duhowJuly 5, 2026 12:04
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI
changed the title
fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
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✅ Debug APK artifact is ready for commit b64c0b3 .

💾 Download APK artifact here.

Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
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observer.observe(document.body, { childList: true, subtree: true });
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} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing by Copilot · Pull Request #3 · duhow/openbeam · GitHub
Skip to content
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3
Draft
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Draft
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
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CopilotAI
commented
Jul 5, 2026•

edited

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When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.
Root cause
enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.
Fix
Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:
privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}
All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI
requested a review
from duhowJuly 5, 2026 12:04
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI
changed the title
fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
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✅ Debug APK artifact is ready for commit b64c0b3 .

💾 Download APK artifact here.

Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
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} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing by Copilot · Pull Request #3 · duhow/openbeam · GitHub
Skip to content
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3
Draft
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Draft
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Conversation
CopilotAI
commented
Jul 5, 2026•

edited

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Contributor
When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.
Root cause
enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.
Fix
Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:
privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}
All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI
requested a review
from duhowJuly 5, 2026 12:04
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI
changed the title
fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
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✅ Debug APK artifact is ready for commit b64c0b3 .

💾 Download APK artifact here.

Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196
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, 'i');
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// Remove or un-stick sticky/fixed headers that block content
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function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing by Copilot · Pull Request #3 · duhow/openbeam · GitHub
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fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3
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copilot/emulate-ndef-tag-2-compatibility
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fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
duhow with Copilot wants to merge 3 commits into
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copilot/emulate-ndef-tag-2-compatibility
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CopilotAI
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Jul 5, 2026•

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When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.
Root cause
enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.
Fix
Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:
privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}
All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI
requested a review
from duhowJuly 5, 2026 12:04
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI
changed the title
fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
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✅ Debug APK artifact is ready for commit b64c0b3 .

💾 Download APK artifact here.

Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196
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, 'i');
if (__m === '*' || __re.test(location.href)) {
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var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
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[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
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pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
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::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
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// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
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if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing by Copilot · Pull Request #3 · duhow/openbeam · GitHub
Skip to content
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing - #3
Draft
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Draft
fix(nfc): suppress OS NFC dispatch chooser during HCE sharing#3
duhow with Copilot wants to merge 3 commits into
mainfrom 
copilot/emulate-ndef-tag-2-compatibility
Conversation
CopilotAI
commented
Jul 5, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
When tapping to share via HCE, the sharing phone was simultaneously acting as an NFC reader — triggering an OS app-chooser dialog that blocked the share flow.
Root cause
enableForegroundDispatch(…, null, null) only intercepts the ACTION_TAG_DISCOVERED fallback tier. Any NFC-capable Android phone carries NDEF data, so Android evaluates ACTION_NDEF_DISCOVERED first — which the null filters left unguarded — and dispatched it to all installed apps that handle that MIME type, producing a chooser.
Fix
Pass explicit IntentFilter arrays to enableForegroundDispatch covering all three dispatch tiers:
privatefunbuildDispatchFilters(): Array<IntentFilter> {
val ndefFilter =IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
try { addDataType("*/*") } catch (_:IntentFilter.MalformedMimeTypeException) {}
}
return arrayOf(
ndefFilter, // tier 1: any NDEF contentIntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED), // tier 2: tech-routed tagsIntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED), // tier 3: catch-all
)
}
All three tiers now route to ShareActivity.onNewIntent where they are silently discarded. enableForegroundDispatch is intentionally used over enableReaderMode, which per Android docs disables HCE/CE routing for its entire active duration.
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that blocks HCE phone-to-phone sharingfix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingJul 5, 2026
CopilotAI
requested a review
from duhowJuly 5, 2026 12:04
CopilotAI
changed the title
fix(nfc): remove enableReaderMode that breaks HCE phone-to-phone sharingfix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerJul 5, 2026
CopilotAI
changed the title
fix(nfc): suppress NFC tag dispatch while HCE is active to stop phone acting as readerfix(nfc): suppress OS NFC dispatch chooser during HCE sharingJul 5, 2026
@github-actions
github-actionsBot
commented
Jul 5, 2026

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✅ Debug APK artifact is ready for commit b64c0b3 .

💾 Download APK artifact here.

Workflow run: https://github.com/duhow/openbeam/actions/runs/28740975196
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Reviewers

@duhowduhowAwaiting requested review from duhow

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2 participants

@duhow