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SimpleTodo

This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).

I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.

Get it on Google Play

Technical Details

Below is a summary of the tech stack used for this project:

SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL

If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:

The approach I took for making this project was the following:

  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku

Pictures

About

A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication

Resources

Readme
Activity

Stars

2 stars

Watchers

1 watching

Forks

0 forks
Report repository

Releases

Packages

Contributors

Languages

, '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" + '

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SimpleTodo
This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).
I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.
Get it on Google Play
Technical Details
Below is a summary of the tech stack used for this project:
SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL
If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:
The approach I took for making this project was the following:
  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku
Pictures
About
A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication
Resources
Readme
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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
BranchesTags
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SimpleTodo
This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).
I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.
Get it on Google Play
Technical Details
Below is a summary of the tech stack used for this project:
SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL
If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:
The approach I took for making this project was the following:
  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku
Pictures
About
A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication
Resources
Readme
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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
BranchesTags
Repository files navigation
SimpleTodo
This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).
I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.
Get it on Google Play
Technical Details
Below is a summary of the tech stack used for this project:
SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL
If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:
The approach I took for making this project was the following:
  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku
Pictures
About
A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication
Resources
Readme
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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
BranchesTags
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SimpleTodo
This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).
I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.
Get it on Google Play
Technical Details
Below is a summary of the tech stack used for this project:
SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL
If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:
The approach I took for making this project was the following:
  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku
Pictures
About
A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication
Resources
Readme
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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
BranchesTags
Repository files navigation
SimpleTodo
This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).
I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.
Get it on Google Play
Technical Details
Below is a summary of the tech stack used for this project:
SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL
If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:
The approach I took for making this project was the following:
  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku
Pictures
About
A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication
Resources
Readme
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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
BranchesTags
Repository files navigation
SimpleTodo
This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).
I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.
Get it on Google Play
Technical Details
Below is a summary of the tech stack used for this project:
SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL
If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:
The approach I took for making this project was the following:
  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku
Pictures
About
A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication
Resources
Readme
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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
BranchesTags
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SimpleTodo
This project is a bare bones, example project for making your own Android app and Scala backend. I used this project to learn how to create and deploy a backend service (I was already familiar with Android development).
I wanted to make this project public because I imagine there are some Android developers out there who are interested in learning more about backend. If that's you, then this repo (and the backend repo) would be a good reference to learn how to make your own backend scala service.
Get it on Google Play
Technical Details
Below is a summary of the tech stack used for this project:
SystemTechnologies Used
Andoid AppKotlin, Coroutines, Koin, Retrofit, MVVM, Single Activity Multi Fragment
AuthenticationAuth0 SDK (Android & Scala), OAuth2.0, JWT
Backend ServiceScala, Play Framework, Slick
DatabasePostgres, PSQL
If you are interested in using Scala Play to make your own backend service, below are a few good resources to review. These are the same resources I used to teach myself:
The approach I took for making this project was the following:
  1. Build the backend service. I used the above resources to learn how to do this
  2. Create the Android app
  3. Get the Android app and backend service to communicate with each other
  4. Start adding authentication to the backend service and app via Auth0. This is a good Scala + Auth0 tutorial
  5. Add Auth0 to the Android app. This is a good Android + Auth0 doc
  6. Ensure that the app and backend service can still communicate now that authentication has been added
  7. Deploy the backend service to Heroku
Pictures
About
A simple todo app for Android. Built with Kotlin, Coroutines, Koin and OAuth 2.0 authentication
Resources
Readme
Activity
Stars
2 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages