Custom launcher in android

Arnab Chakraborty

A cognitive perspective on web.

How to Write Custom Launcher App in Android

In Android the screen that appears when the phone starts is called “Launcher Screen”. It is possible in Android to write custom launcher apps which can be used as a replacement for the default launcher app that comes bundled with the phone. Developing a launcher app is no different than developing any other Android application, in fact both are same. In this post I’ll share what you need to do to write your own custom launcher application.

AndroidManifest.xml

I’ll skip the part of creating the project and drive straight to the code. Here is our sample AndroidManifest.xml file, remember to pay attention to the comments in the code.

The important line in the above XML file is , this intent-filter allows you to set your application as Home Screen application. Android looks for this particular intent filter and whenever you install your app with this intent-filter set then your application will appear in the list of installed launchers (a tap on the Home button will reveal the list).

Display installed applications in our custom homescreen

Now as we have finished with the manifest file, let’s add some code to display the list of installed applications in our Home Screen, this way we can at least use the app after installing.

AsyncTaskLoader to asynchronously load applications

Here is the code to load the applications list asynchronously, we’re using a custom AsyncTaskLoader class, later we’ll hook it up in our fragment class using the Android Loaders.

The loader class above will only retrieve the applications for which a “good” launch intent is available, put simply we’re only displaying those applications for which getLaunchIntentForPackage returns a valid launch intent.

GridView Adapter

A simple adapter used to populate the applications’ icons and names in a GridView .

Grid Fragment

Grid view container fragment class, uses Android Loaders to load the list of applications and displays them in the Grid view.

Layout file

A simple layout file to embed the grid fragment.

Running the homescreen application

As it’s a Launcher app, so when you install it you don’t get to see anything unless you tap on the home button. The tap on the Home button shows you a chooser dialog from which you can select the appropriate Launcher app.

That’s it, you now have your own custom launcher application. Although a full-fledged launcher app like the ones that come with Android phones has many features built into them, but you can use this as a basic building block and start writing a more advanced and complex launcher as you learn.

For those who wants to investigate further, do take a look at the default launcher application code here: Android Stock Launcher App

Update: I wrote another post which provides a high-level overview of what all things are required to develop a “kiosk-mode” Android application. You can check it out here – Developing kiosk-mode applications in Android

You can download the full source code used in this article from this Github repository.

Note: I have developed a generic Kiosk Management Solution called MobiLock Pro which has the above functionality as well as many other features. If you want to have a fully managed Cloud Based Kiosk solution then do check out MobiLock Pro.

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Best Android launchers for your phone 2021

Source: Ara Wagoner / Android Central

The way we arrange, organize, and interact with our apps on Android is called the launcher. Launchers usually consist of a series of home screens, where we can arrange app shortcuts and widgets while the rest of our apps sit in an app drawer. From the best Android phones to the most basic budget smartphone, every phone comes with a launcher. Some built-in launchers are great, but when they drop the ball, there are endless third-party launchers that not only pick it up again but knock it clear out of the park. Everyone has their perfect launcher, but if you haven’t found your favorite yet, then here are the best Android launchers that we at Android Central have used and loved for years.

The best launchers

Best Overall: Smart Launcher 5

Source: Ara Wagoner / Android Central

Smart Launcher has been around for years and years, but it really kicked things up a notch with Smart Launcher 5. The home screen features a grid-less widget placement system and modular page system, but the real star of the show here is still the app drawer. Smart Launcher 5 automatically sorts your apps into several categories, and if you pay for Smart Launcher Pro, you can add your own custom categories and sort your various drawer tabs in a variety of ways, from most-used to install time to icon color.

From a responsive and comprehensive categorical app drawer to some of the most precise widget placement on Android to the most diverse icon options of any smartphone, Smart Launcher 5 has a lot to love. Its gestures are top-notch, too, especially the double-tap shortcuts for dock apps, which work worlds better than the swipe app shortcuts Nova and Action use.

Smart Launcher is also part of the holy trinity of quick home screen theming I’ve used for the last three years, and it’s been used in our dead awesome Deadpool theme, NBA Finals themes, revamped MrMobile theme, and more. You can event combine it with Android 12’s Material You and Smart Launcher’s Icon Pack Studio to build a home screen experience that will automatically mesh with any and every wallpaper you set on the phone.

• Easy setup with simplified layout
• Tabbed app drawer is wonderful
• Quickest launcher to theme
• Best home screen app gestures

• You can’t place icons at the top of the home screen
• Premium system can be confusing

Best Overall

Smart Launcher 5

Simple setup and wonderful widget pages

With a smart, widely adaptable app drawer, insane icon options through Icon Pack Studio, and a drop-dead simple home screen, Smart Launcher 5 has won my heart and my home screen.

Resurging Legacy: Nova Launcher

Source: Ara Wagoner / Android Central

Nova Launcher has been a major player in the home screen market longer than most of us have even used Android. The reason for this continued dominance is simple. Nova’s mix of customization, convenience, and cunning is unparalleled. Nova lets your phone look more Pixel-y than a Pixel and more TouchWiz-zy than a Galaxy and does it all with ease and grace. It also lets you build a home screen that is unique, stable, and solid while being as plain or beautiful as you’d like.

A wide feature set allows Nova to achieve all these wonderful themes and let users build exactly the home screen they want, with small but infinitely useful features like subgrid positioning and a robust backup system. For users just getting used to third-party launchers, the «import from other launchers» feature is the most consistent and reliable on Nova than just about every other launcher I’ve tried in previous years. If you want to ease yourself from the basic launcher to a custom experience, Nova can help you get comfortable with launcher layouts and themes.

The launcher also recently took Nova Launcher 7 to the stable channel where everyone could enjoy the overhaul to settings and launcher look that has been in beta for a year. Nova had been starting to feel a little bloated, but the Nova 7 update has refreshed things so it’s easier for new users to jump in while still being as flexible as ever for those of us who are ridiculously picky when it comes to theming our home screens.

• Easy to import previous launcher layout
• Tons of customization options
• Great support and stability
• Buy Prime once and you’re set for life

• All the options can be overwhelming
• Theming can take a while

Resurging Legacy

Nova Launcher

Good ol’ reliable launcher for the masses

Whether you want to build complex themes or you just want a smartly laid out launcher with excellent gesture controls, Nova is for you and your style.

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Swiss Army Launcher: Action Launcher

Source: Ara Wagoner / Android Central

The watchword of both Action Launcher and its users is quick — Quicktheme, Quickdrawer, Quickpage, Quickbar. To ensure it can be the quickest and best launcher for users who want to set everything up just so, Action Launcher has taken it upon itself to be one of the most customizable launchers on the market.

From its robust gesture controls to its ubiquitous Covers and Shutters to hide folders and widgets under app icons, Action Launcher makes it easy to get the home screen you want. If Quicktheme’s color palette misses the mark, you can now set Material palette colors or custom hex code colors to get a more cohesive look! This was a long-awaited feature and it makes Action Launcher much more useful to live wallpaper users and themers.

Action Launcher is also quick to support features from the newest versions of Android, or as much as can be replicated on a third-party launcher. Action Launcher’s developer Chris Lacy is devoted, dedicated, and is quick to jump in on Android issues that impact third-party launchers — and even iOS features, adding widget stacks from iOS 15. While the actual theme-building power here isn’t quite as adaptable as Nova Launcher, it’s a launcher that works incredibly, well, quick about getting you set up and on your way.

• Customize almost everything
• Great gesture options
• Robust support

• Not quite as flexible as Nova Launcher
• Premium/Plus system can get confusing

Swiss Army Launcher

Action Launcher

Quick’s the word and sharp’s the gesture

Whether you want a launcher that’s the peak of productivity or the height of sophistication, Action Launcher and its many quick features can help you realize your dream setup.

Best Productivity: Microsoft Launcher

Source: Ara Wagoner / Android Central

You’d think that if Microsoft was going to bring a launcher to Android, it’d match Windows 10 or maybe the old Windows Phone look — and you’d be wrong. Not only is Microsoft Launcher a completely Android-native experience, but it’s a top-quality, ever-updating launcher. It’s one of few outside Nova Launcher to offer edge-to-edge widgets and subgrid positioning.

Microsoft Launcher’s experience centers around a clean home screen and a smart page to the left fed by your Microsoft account, your daily phone use, and any Android widgets you wish to add. Even if you’re not immersed in the Microsoft ecosystem, having a scrolling page of widgets beats having to space them out over 3-4 pages. While this launcher’s settings are somewhat clunky, it has all the launcher options you’d want and then some.

While Microsoft Launcher is definitely not as simplistic as Smart Launcher 5 or Niagara Launcher, it is still a fairly lightweight launcher that’s well-worth considering, especially if you have any sort of reliance on Microsoft’s ecosystem for work, school, or personal use. And while the Microsoft Launcher is designed for the Microsoft Surface Duo 2, not the Z Fold series, it is yet another good option of foldable phone owners.

• Scrolling widget page
• Good enterprise integration
• Very active dev team

• Settings need refinement
• Two-level dock is weird

Best Productivity

Microsoft Launcher

Integration and adaptability for the way you work

You can customize most aspects of this quite adaptable launcher, but it’s also remarkably easy to have the launcher get out of your way and let you work.

Quick and Simple: Niagara Launcher

Source: Ara Wagoner / Android Central

Niagara is still a shiny new-ish launcher that has only been around for a couple years — yes, that makes it new by launcher standards — but it’s already got quite the following for being a lightning-fast launcher that’s great for low-memory devices. It’s also ridiculously simple to build themes around since it only has one layout. You can stick one or more widgets at the top, you have a Quicklist of your favorite apps, and the rest of your apps are a simple slide along the A-Z alphabet on the right (or left) side of the screen.

The feature set here has been steadily growing over the last year, and Niagara really hit its stride around the summer of 2021 when the Galaxy Z Fold 3 arrived and brought foldables mainstream. Niagara Launcher was very quick to adapt its minimal launcher into a big-screen-friendly launcher and in fact if you’re looking for an all-business launcher for your Fold 3, Niagara has both one-column and two-column setups you can use to get to your next app and get back to work lickety-split.

If you just want to find your apps quickly and get on with your day, Niagara Launcher is a pretty great answer. It reminds me a bit of the old Z Launcher from several years ago, if you remember Nokia’s experimental launcher, but I think this one is going to be around for a good while.

• Ridiculously fast
• Quick setup
• Drop-dead easy interface
• Works well on foldables

• Very limited layout options
• Gestures can overlap at times

Quick and Simple

Niagara Launcher

One layout, one super-fast app drawer.

While you may not be able to spread out all your apps and widgets on five different screens, this vertically scrolling launcher is lightning quick and works well on phones that more bloated launchers start to lag on.

Bottom line

My first launcher love was Nova, but Smart Launcher 5 won over my heart in 2018 and I haven’t found anything else that works quite as well for my theme-loving setup. The categorical app drawer is better than one big A-Z sort once you have your categories set the way you want them, and the double-tap app shortcuts don’t interfere with gesture navigation or swiping between the app drawer and home screen screens the way they do on Nova, Action, and just about every other launcher in existence.

If you want a launcher that’s more like the launcher that came with your phone, Nova Launcher is the best bet because it imports from other launchers more consistently than any other launcher I’ve tried, allowing you to start with the setup you already had and then ease yourself into more advanced features like shortcut gestures and customizing the look of your folders, icons, and search bars. Nova Launcher is what Nicholas Sutrich uses on all of his phones, including on his Galaxy Z Fold 3, because you just can’t beat Nova’s flexibility.

Whichever of these launchers you opt for, the beauty of testing a launcher is that these all have a free tier that allows you to get a really good feel for the launcher and how it performs before you unlock extra features with Pro upgrades. If you have a launcher you absolutely adore, you should absolutely buy the pro key or contribute to the developers so that they can keep updating that launcher and keep it alive. Developers need to eat, too!

What happened to my gesture navigation?

This is not the launcher’s fault. It’s Google’s.

If you’re on an Android 10 phone that isn’t on the latest patches, using anything other than the default, manufacturer launcher on your phone will force you from the new Android 10 gesture nav back to ugly old three-button nav. This was an issue at Android 10’s initial launch, one that made third-party launchers suffer for Google’s incompetence.

This issue has since been fixed for many phones, first Pixels and then OnePlus phones and finally Samsung phones that have the One UI 2.5 and One UI 3.0 updates. If you can’t use gesture nav with your new launcher, contact your manufacturer and ask what the holdup with the update is.

And once again, shame on Google for ever allowing a major release of Android to ship like this! SHAME!

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