Android 16 Early Compatibility Warning for Codename One #4466

Closed
Closed
Android 16 Early Compatibility Warning for Codename One#4466
Assignees
shai-almog

Description

@DurankGts
DurankGts
opened on Jan 27, 2026

Hello Codename One Team,

We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).

Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.

Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:

Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.

Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.

UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.

Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.

We recommend early validation of the Codename One Android port against Android 16, including:

Running the current CN1 runtime on Android 16 devices and emulators.

Reviewing logcat output for hidden API access warnings or runtime crashes.

Auditing native Android code and plugins for usage of non-SDK interfaces.

Testing layout behavior under enforced edge-to-edge and window resizing scenarios.

We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.

Thank you for your continued support.

sources

https://developer.android.com/about/versions/16/changes/non-sdk-16
https://developer.android.com/about/versions/16/behavior-changes-16

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    , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
     blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

    Skip to content
    Android 16 Early Compatibility Warning for Codename One #4466
    Closed
    Closed
    Android 16 Early Compatibility Warning for Codename One#4466
    Assignees
    shai-almog
    Description
    @DurankGts
    DurankGts
    opened on Jan 27, 2026
    Hello Codename One Team,
    We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).
    Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.
    Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:
    Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.
    Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.
    UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.
    Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.
    We recommend early validation of the Codename One Android port against Android 16, including:
    Running the current CN1 runtime on Android 16 devices and emulators.
    Reviewing logcat output for hidden API access warnings or runtime crashes.
    Auditing native Android code and plugins for usage of non-SDK interfaces.
    Testing layout behavior under enforced edge-to-edge and window resizing scenarios.
    We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.
    Thank you for your continued support.
    sources
    https://developer.android.com/about/versions/16/changes/non-sdk-16
    https://developer.android.com/about/versions/16/behavior-changes-16
    Metadata
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      None yet
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      No branches or pull requests
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

      Skip to content
      Android 16 Early Compatibility Warning for Codename One #4466
      Closed
      Closed
      Android 16 Early Compatibility Warning for Codename One#4466
      Assignees
      shai-almog
      Description
      @DurankGts
      DurankGts
      opened on Jan 27, 2026
      Hello Codename One Team,
      We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).
      Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.
      Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:
      Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.
      Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.
      UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.
      Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.
      We recommend early validation of the Codename One Android port against Android 16, including:
      Running the current CN1 runtime on Android 16 devices and emulators.
      Reviewing logcat output for hidden API access warnings or runtime crashes.
      Auditing native Android code and plugins for usage of non-SDK interfaces.
      Testing layout behavior under enforced edge-to-edge and window resizing scenarios.
      We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.
      Thank you for your continued support.
      sources
      https://developer.android.com/about/versions/16/changes/non-sdk-16
      https://developer.android.com/about/versions/16/behavior-changes-16
      Metadata
      Metadata
      Assignees
      Labels
      No labels
      No labels
      Type
      No type
      Projects
      No projects
        Milestone
        No milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

        Skip to content
        Android 16 Early Compatibility Warning for Codename One #4466
        Closed
        Closed
        Android 16 Early Compatibility Warning for Codename One#4466
        Assignees
        shai-almog
        Description
        @DurankGts
        DurankGts
        opened on Jan 27, 2026
        Hello Codename One Team,
        We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).
        Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.
        Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:
        Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.
        Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.
        UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.
        Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.
        We recommend early validation of the Codename One Android port against Android 16, including:
        Running the current CN1 runtime on Android 16 devices and emulators.
        Reviewing logcat output for hidden API access warnings or runtime crashes.
        Auditing native Android code and plugins for usage of non-SDK interfaces.
        Testing layout behavior under enforced edge-to-edge and window resizing scenarios.
        We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.
        Thank you for your continued support.
        sources
        https://developer.android.com/about/versions/16/changes/non-sdk-16
        https://developer.android.com/about/versions/16/behavior-changes-16
        Metadata
        Metadata
        Assignees
        Labels
        No labels
        No labels
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

          Skip to content
          Android 16 Early Compatibility Warning for Codename One #4466
          Closed
          Closed
          Android 16 Early Compatibility Warning for Codename One#4466
          Assignees
          shai-almog
          Description
          @DurankGts
          DurankGts
          opened on Jan 27, 2026
          Hello Codename One Team,
          We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).
          Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.
          Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:
          Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.
          Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.
          UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.
          Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.
          We recommend early validation of the Codename One Android port against Android 16, including:
          Running the current CN1 runtime on Android 16 devices and emulators.
          Reviewing logcat output for hidden API access warnings or runtime crashes.
          Auditing native Android code and plugins for usage of non-SDK interfaces.
          Testing layout behavior under enforced edge-to-edge and window resizing scenarios.
          We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.
          Thank you for your continued support.
          sources
          https://developer.android.com/about/versions/16/changes/non-sdk-16
          https://developer.android.com/about/versions/16/behavior-changes-16
          Metadata
          Metadata
          Assignees
          Labels
          No labels
          No labels
          Type
          No type
          Projects
          No projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

            Skip to content
            Android 16 Early Compatibility Warning for Codename One #4466
            Closed
            Closed
            Android 16 Early Compatibility Warning for Codename One#4466
            Assignees
            shai-almog
            Description
            @DurankGts
            DurankGts
            opened on Jan 27, 2026
            Hello Codename One Team,
            We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).
            Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.
            Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:
            Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.
            Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.
            UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.
            Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.
            We recommend early validation of the Codename One Android port against Android 16, including:
            Running the current CN1 runtime on Android 16 devices and emulators.
            Reviewing logcat output for hidden API access warnings or runtime crashes.
            Auditing native Android code and plugins for usage of non-SDK interfaces.
            Testing layout behavior under enforced edge-to-edge and window resizing scenarios.
            We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.
            Thank you for your continued support.
            sources
            https://developer.android.com/about/versions/16/changes/non-sdk-16
            https://developer.android.com/about/versions/16/behavior-changes-16
            Metadata
            Metadata
            Assignees
            Labels
            No labels
            No labels
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Android 16 Early Compatibility Warning for Codename One #4466
              Closed
              Closed
              Android 16 Early Compatibility Warning for Codename One#4466
              Assignees
              shai-almog
              Description
              @DurankGts
              DurankGts
              opened on Jan 27, 2026
              Hello Codename One Team,
              We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).
              Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.
              Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:
              Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.
              Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.
              UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.
              Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.
              We recommend early validation of the Codename One Android port against Android 16, including:
              Running the current CN1 runtime on Android 16 devices and emulators.
              Reviewing logcat output for hidden API access warnings or runtime crashes.
              Auditing native Android code and plugins for usage of non-SDK interfaces.
              Testing layout behavior under enforced edge-to-edge and window resizing scenarios.
              We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.
              Thank you for your continued support.
              sources
              https://developer.android.com/about/versions/16/changes/non-sdk-16
              https://developer.android.com/about/versions/16/behavior-changes-16
              Metadata
              Metadata
              Assignees
              Labels
              No labels
              No labels
              Type
              No type
              Projects
              No projects
                Milestone
                No milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                Skip to content
                Android 16 Early Compatibility Warning for Codename One #4466
                Closed
                Closed
                Android 16 Early Compatibility Warning for Codename One#4466
                Assignees
                shai-almog
                Description
                @DurankGts
                DurankGts
                opened on Jan 27, 2026
                Hello Codename One Team,
                We would like to raise an early warning regarding possible compatibility and runtime issues when running Codename One applications on Android 16 (API level 36).
                Android 16 introduces stricter enforcement of non-SDK (hidden) API restrictions, mandatory edge-to-edge UI behavior, and new rules around window resizing and orientation handling, especially on large screens and foldable devices.
                Since Codename One relies on native Android code for window management, system UI handling, keyboard behavior, immersive mode, and other low-level integrations, there is a risk that:
                Some internal Android APIs currently used by the CN1 runtime or plugins may now be blocked or restricted.
                Certain features may fail at runtime due to NoSuchMethodError, IllegalAccessError, or hidden API access violations.
                UI layouts may be affected by mandatory edge-to-edge behavior and enforced resizability on tablets and foldables.
                Status bar and navigation bar insets may no longer be handled correctly if relying on deprecated behaviors.
                We recommend early validation of the Codename One Android port against Android 16, including:
                Running the current CN1 runtime on Android 16 devices and emulators.
                Reviewing logcat output for hidden API access warnings or runtime crashes.
                Auditing native Android code and plugins for usage of non-SDK interfaces.
                Testing layout behavior under enforced edge-to-edge and window resizing scenarios.
                We are opening this ticket proactively to help identify and address any Android 16–related regressions as early as possible, before Play Store targetSdkVersion requirements make API 36 mandatory.
                Thank you for your continued support.
                sources
                https://developer.android.com/about/versions/16/changes/non-sdk-16
                https://developer.android.com/about/versions/16/behavior-changes-16
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