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Android BluetoothAdvertisements Sample

Sample demonstrating how to advertise small amounts of data using the Bluetooth Low Energy API. Also demonstrates how to scan for those Advertisements. (requires 2 devices to see full operation)

Introduction

This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs. The functionality is split into two fragments - one for Advertising, one for Scanning.

ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can refresh to scan again and update the list.

AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic information about the device along with a UUID specific to this app so the ScannerFragment on other devices can filter by it.

Note: A device cannot detect its own BLE advertisements. You will need two devices to see this sample in action.

Pre-requisites

  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository

Screenshots

Screenshot

Getting Started

This sample uses the Gradle build system. To build this project, use the "gradlew build" command or use "Import Project" in Android Studio.

Support

If you've found an error in this sample, please file an issue: https://github.com/googlesamples/android-BluetoothAdvertisements

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.

License

Copyright 2017 The Android Open Source Project, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

About

No description, website, or topics provided.

Resources

Readme
Apache-2.0 license

Contributing

Contributing
Activity

Stars

1 star

Watchers

1 watching

Forks

0 forks
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
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;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - onivas/android-BluetoothAdvertisements · GitHub
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Android BluetoothAdvertisements Sample
Sample demonstrating how to advertise small amounts of data using the Bluetooth
Low Energy API. Also demonstrates how to scan for those Advertisements. (requires
2 devices to see full operation)
Introduction
This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs.
The functionality is split into two fragments - one for Advertising, one for Scanning.
ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising
using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can
refresh to scan again and update the list.
AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic
information about the device along with a UUID specific to this app so the ScannerFragment on other
devices can filter by it.
Note: A device cannot detect its own BLE advertisements. You will need two devices to see this
sample in action.
Pre-requisites
  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository
Screenshots
Screenshot
Getting Started
This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.
Support
If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-BluetoothAdvertisements
Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
License
Copyright 2017 The Android Open Source Project, Inc.
Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for
additional information regarding copyright ownership. The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.
About
No description, website, or topics provided.
Resources
Readme
Apache-2.0 license
Contributing
Contributing
Activity
Stars
1 star
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - onivas/android-BluetoothAdvertisements · GitHub
Skip to content
BranchesTags
Repository files navigation
Android BluetoothAdvertisements Sample
Sample demonstrating how to advertise small amounts of data using the Bluetooth
Low Energy API. Also demonstrates how to scan for those Advertisements. (requires
2 devices to see full operation)
Introduction
This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs.
The functionality is split into two fragments - one for Advertising, one for Scanning.
ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising
using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can
refresh to scan again and update the list.
AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic
information about the device along with a UUID specific to this app so the ScannerFragment on other
devices can filter by it.
Note: A device cannot detect its own BLE advertisements. You will need two devices to see this
sample in action.
Pre-requisites
  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository
Screenshots
Screenshot
Getting Started
This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.
Support
If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-BluetoothAdvertisements
Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
License
Copyright 2017 The Android Open Source Project, Inc.
Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for
additional information regarding copyright ownership. The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.
About
No description, website, or topics provided.
Resources
Readme
Apache-2.0 license
Contributing
Contributing
Activity
Stars
1 star
Watchers
1 watching
Forks
0 forks
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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')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
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('^' + ".*" + '
GitHub - onivas/android-BluetoothAdvertisements · GitHub
Skip to content
BranchesTags
Repository files navigation
Android BluetoothAdvertisements Sample
Sample demonstrating how to advertise small amounts of data using the Bluetooth
Low Energy API. Also demonstrates how to scan for those Advertisements. (requires
2 devices to see full operation)
Introduction
This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs.
The functionality is split into two fragments - one for Advertising, one for Scanning.
ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising
using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can
refresh to scan again and update the list.
AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic
information about the device along with a UUID specific to this app so the ScannerFragment on other
devices can filter by it.
Note: A device cannot detect its own BLE advertisements. You will need two devices to see this
sample in action.
Pre-requisites
  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository
Screenshots
Screenshot
Getting Started
This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.
Support
If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-BluetoothAdvertisements
Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
License
Copyright 2017 The Android Open Source Project, Inc.
Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for
additional information regarding copyright ownership. The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.
About
No description, website, or topics provided.
Resources
Readme
Apache-2.0 license
Contributing
Contributing
Activity
Stars
1 star
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
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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',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - onivas/android-BluetoothAdvertisements · GitHub
Skip to content
BranchesTags
Repository files navigation
Android BluetoothAdvertisements Sample
Sample demonstrating how to advertise small amounts of data using the Bluetooth
Low Energy API. Also demonstrates how to scan for those Advertisements. (requires
2 devices to see full operation)
Introduction
This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs.
The functionality is split into two fragments - one for Advertising, one for Scanning.
ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising
using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can
refresh to scan again and update the list.
AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic
information about the device along with a UUID specific to this app so the ScannerFragment on other
devices can filter by it.
Note: A device cannot detect its own BLE advertisements. You will need two devices to see this
sample in action.
Pre-requisites
  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository
Screenshots
Screenshot
Getting Started
This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.
Support
If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-BluetoothAdvertisements
Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
License
Copyright 2017 The Android Open Source Project, Inc.
Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for
additional information regarding copyright ownership. The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.
About
No description, website, or topics provided.
Resources
Readme
Apache-2.0 license
Contributing
Contributing
Activity
Stars
1 star
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
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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')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - onivas/android-BluetoothAdvertisements · GitHub
Skip to content
BranchesTags
Repository files navigation
Android BluetoothAdvertisements Sample
Sample demonstrating how to advertise small amounts of data using the Bluetooth
Low Energy API. Also demonstrates how to scan for those Advertisements. (requires
2 devices to see full operation)
Introduction
This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs.
The functionality is split into two fragments - one for Advertising, one for Scanning.
ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising
using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can
refresh to scan again and update the list.
AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic
information about the device along with a UUID specific to this app so the ScannerFragment on other
devices can filter by it.
Note: A device cannot detect its own BLE advertisements. You will need two devices to see this
sample in action.
Pre-requisites
  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository
Screenshots
Screenshot
Getting Started
This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.
Support
If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-BluetoothAdvertisements
Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
License
Copyright 2017 The Android Open Source Project, Inc.
Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for
additional information regarding copyright ownership. The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.
About
No description, website, or topics provided.
Resources
Readme
Apache-2.0 license
Contributing
Contributing
Activity
Stars
1 star
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - onivas/android-BluetoothAdvertisements · GitHub
Skip to content
BranchesTags
Repository files navigation
Android BluetoothAdvertisements Sample
Sample demonstrating how to advertise small amounts of data using the Bluetooth
Low Energy API. Also demonstrates how to scan for those Advertisements. (requires
2 devices to see full operation)
Introduction
This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs.
The functionality is split into two fragments - one for Advertising, one for Scanning.
ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising
using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can
refresh to scan again and update the list.
AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic
information about the device along with a UUID specific to this app so the ScannerFragment on other
devices can filter by it.
Note: A device cannot detect its own BLE advertisements. You will need two devices to see this
sample in action.
Pre-requisites
  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository
Screenshots
Screenshot
Getting Started
This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.
Support
If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-BluetoothAdvertisements
Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
License
Copyright 2017 The Android Open Source Project, Inc.
Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for
additional information regarding copyright ownership. The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.
About
No description, website, or topics provided.
Resources
Readme
Apache-2.0 license
Contributing
Contributing
Activity
Stars
1 star
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
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;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
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;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-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();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
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); }
})();
})();
GitHub - onivas/android-BluetoothAdvertisements · GitHub
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Android BluetoothAdvertisements Sample
Sample demonstrating how to advertise small amounts of data using the Bluetooth
Low Energy API. Also demonstrates how to scan for those Advertisements. (requires
2 devices to see full operation)
Introduction
This sample demonstrates use of the Bluetooth Low Energy (BLE) Advertisement and Scanning APIs.
The functionality is split into two fragments - one for Advertising, one for Scanning.
ScannerFragment activates BLE Scanning for 5 seconds and displays a list of found devices which are advertising
using this sample. It shows the device type, Bluetooth address, and when it was last seen. User can
refresh to scan again and update the list.
AdvertiserFragment allows the user to toggle BLE Advertising of that device. It broadcasts basic
information about the device along with a UUID specific to this app so the ScannerFragment on other
devices can filter by it.
Note: A device cannot detect its own BLE advertisements. You will need two devices to see this
sample in action.
Pre-requisites
  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository
Screenshots
Screenshot
Getting Started
This sample uses the Gradle build system. To build this project, use the
"gradlew build" command or use "Import Project" in Android Studio.
Support
If you've found an error in this sample, please file an issue:
https://github.com/googlesamples/android-BluetoothAdvertisements
Patches are encouraged, and may be submitted by forking this project and
submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
License
Copyright 2017 The Android Open Source Project, Inc.
Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for
additional information regarding copyright ownership. The ASF licenses this
file to you under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.
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