#How to solve iOS 17 app crashing issue

[bestmobiletools-blog]

iOS 17.7.1 Jailbreak

If you want to explore new features and customization options on your iOS device, then an iOS 17.7.1 jailbreak is your answer. With this latest iOS version, Apple has introduced impressive updates, but some users still crave more freedom to personalize and modify their devices. Jailbreaking is the way to achieve that freedom, and with the InstantJB Tool, you can easily jailbreak iOS 17.7.1 and download Cydia for free.

What is iOS 17.7.1 Jailbreak?

An iOS 17.7.1 jailbreak allows users to bypass Apple’s restrictions, gaining complete control over their devices. With jailbroken iOS, users can install apps, tweaks, and customizations unavailable in the App Store. This means more freedom to change the look of your iPhone, install unique themes, and enjoy system tweaks for improved functionality.

The iOS 17.7.1 jailbreak unlocks a world of apps and modifications through Cydia, the well-known app store for jailbroken devices. Cydia offers a variety of apps and tweaks that you won’t find in the official App Store, making it an essential tool for anyone who wants to personalize their iOS device.

Benefits of Jailbreaking iOS 17.7.1

Jailbreaking iOS 17.7.1 comes with numerous benefits that allow you to:

Customize the Interface: After an iOS 17.7.1 jailbreak, you can change themes, icons, and overall UI for a personalized experience.

Access Exclusive Apps: Cydia has apps and tweaks unavailable on the App Store, including those that enhance productivity, device functionality, and usability.

Remove Unwanted Pre-installed Apps: Apple includes many pre-installed apps that some users may not find helpful. Jailbreaking lets you remove these to free up space.

Enhance Device Performance: Jailbreak tweaks can boost your device's performance, helping you to get the most out of your hardware.

These are just a few benefits of jailbreaking your iOS device. The iOS 17.7.1 jailbreak opens many possibilities for customization and additional functionality.

How to Perform an iOS 17.7.1 Jailbreak with InstantJB Tool

The InstantJB Tool is an easy and reliable way to jailbreak your device. Here’s how to use it:

Download and Install InstantJB: Head over to the official InstantJB Tool website. Ensure your device is running on iOS 17.7.1.

Connect Your Device: Once you’ve downloaded the tool, connect your iOS device to your computer. The tool will recognize your device and guide you through the process.

Start the Jailbreak Process: Follow the on-screen instructions, and the tool will complete the Jailbreak in minutes.

Install Cydia: InstantJB will install Cydia automatically after jailbreaking, so you can download and enjoy new apps and tweaks immediately.

To get started, visit https://www.instantjb.com/cydia-ios-17-1-2-3-4-5-6-7-8-9-jailbreak.html and get the InstantJB Tool for free.

Is iOS 17.7.1 Jailbreak Safe?

Many users wonder about the safety of jailbreaking. Using trusted tools like InstantJB to ensure your device remains safe throughout the process is essential. The InstantJB Tool is tested and widely used, making it a trusted solution for jailbreaking iOS 17.7.1. However, as with any software, it’s essential to take certain precautions:

Backup Your Device: Back up your data before jailbreaking to prevent loss.

Stay Updated: Make sure you have the latest version of InstantJB to ensure compatibility and stability.

Troubleshooting iOS 17.7.1 Jailbreak Issues

In rare cases, you might encounter minor issues after jailbreaking. Here are a few common problems and how to solve them:

Device Restarts Randomly: Try rebooting your device. If the problem persists, reinstall InstantJB.

Cydia Crashes on Opening: Ensure you’re using the latest version of Cydia. Reinstalling Cydia through InstantJB can often solve this issue.

Frequently Asked Questions About iOS 17.7.1 Jailbreak.

Q: Can I undo the Jailbreak on iOS 17.7.1?

A: You can always restore your device to its original state by performing a system restore through iTunes. This will remove the Jailbreak and any modifications you made.

Q: Does jailbreaking void my warranty?

A: Jailbreaking does void the warranty, but restoring your device to its original settings will usually hide any traces of the Jailbreak if you need to take it to Apple for repairs.

Q: Are there any risks with iOS 17.7.1 Jailbreak?

A: Jailbreaking does involve some risks, but using a trusted tool like InstantJB reduces these significantly. Following the instructions carefully can help you avoid common issues.

Final Thoughts on iOS 17.7.1 Jailbreak

With the iOS 17.7.1 jailbreak, you can completely control your device. The InstantJB Tool makes it simple and safe to jailbreak, giving you access to Cydia and a world of unique apps and tweaks. If you’re ready to unlock the full potential of your iOS device, provide the iOS 17.7.1 jailbreak a try and explore all the customization options available.

[loadrevolution635]

Quicktime Plugin For Safari Mac

Quicktime Plugin Firefox

Quicktime Plugin Edge

Quicktime Player Plugin Safari Mac

Installed Plug-ins. Shockwave Flash 11.8 r800 The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site. Displays Java applet content, or a placeholder if Java is not installed. Microsoft Office for Mac SharePoint Browser Plug-in Fuze Launch Plugin. The latest version of OS X features an elegant design, includes enhancements to the apps you use most, and enables your Mac and iOS devices to work together in new ways. Learn more about OS X; Safari extensions are a great way for you to add new features to Safari. Built by developers, Safari extensions use the latest web technologies.

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OS X :: Quicktime Plugin Not Working In Safari Or Firefox?

Nov 22, 2009

I switched from PC to iMac last week . I am very excited by the performance of Mac OSX and display of the new 21.5' iMac. The only problem I face is that quicktime movies are not played in safari/firefox. Safari waits indefinitely for loading the quicktime movie , firefox shows a big 'Q ?'. Don't know what that means. This frustrating because I can't view any of the tutorial movies in the apple website. It is ironic that apple's own format is not playing on the new iMac. The OS is Mac OSX 10.6.2 . Flash is playing well in the same machine. I am new to mac .

Applications :: Safari Won't Load Quicktime Plugin?

Dec 4, 2010

so i intentionally/accidentally deleted my qt plugins in safari trying to solve a player issue. anyway i have spent 24 hrs reading alllllll the posts and kind find a solution to my new problem. i have QTX and QT7 loaded on the mac snow leopard. this was working before i deleted the plugins. after reinstalling the QT 7, the plugins are in the internet plugin folder in both my main and user library, but Safari refuses to acknowledge their presences and simply says 'plugin missing' when i go to webpage with embeded media or tries to download the .mov from another site. The plugins while in the library, are NOT listing in the Safari installed plugin list.

Applications :: About Quicktime Internet Plugin - Cannot Play On Safari

Sep 22, 2009

i currently using snow leopard and i have deleted my quicktime plugin in the process of deleting unwanted internet plugin. As a result, quicktime cannot be play on safari. if you have any suggest plz tell me, i will try it. thx

Safari :: Google Earth Plugin Not Working/quitting?

Mar 19, 2012

Whenever I switch to the 'Earth View' in google maps in safari 5.1.4, a message displays which says the plugin has quit and there was a problem loading the plugin. I tried removing the plugin several times and reinstalling but nothing has worked so far. Info: iMac (27-inch Mid 2010), Mac OS X (10.7.3)

QuickTime :: Plugin For Transitions For Quicktime Pro 7 On Windows

Jun 10, 2012

i need a plugin or what ever else so i can use transitions or fades for my movie on quicktime pro 7 for windows Info: quicktime, Windows 7

Software :: Quicktime Not Working In Safari?

May 26, 2008

Powerbook G4 17' 1 GHz, System 10.4.8, Safari 2.0.4, Quicktime 7.1.5 Problem: after a crash (occurered while whatching a wmv sequence in Safari with Flip4Mac), I uninstalled Flip4Mac. Since then, no way to watch an mpg sequence through Quicktime in Safari - either I get the Quicktime logo with a question mark or Safari crashes. I tried: reinstalling combo 10.4.8, Safari 2.0.4, Quicktime 7.1.5, creating a new user - no change. I therefor think that there must be some 'bad' files somewhere in the system, I checked the safari and finder crash logs.

OS X :: 10.6 SL: Revert To Old QuickTime Plugin?

Sep 24, 2009

i've decided that I absolutely hate everything about the QuickTime X plugin that comes in Snow Leopard. It seems to only show up when playing certain types of media (MP3, H.264), but I'd like to know if there's a way to use the old plugin for everything. There are no words for how much I hate this thing. The back 30 seconds button looks stupid and is largely useless, the bar looks really fat and the play button is huge. More importantly, I can't change playback speed, and the 'Save As...' feature is gone. I paid for the Pro version of this plugin and now Apple has rendered it useless for everything but straightforward playback on a good deal of the files I encounter daily. Does anyone know of some way to force everything to open with the old plugin? I've thought of switching /Library/Internet Plug-Ins/QuickTime Plugin.plugin with the old one from Leopard, but I don't have it anymore and I'm not even convinced that this would work.

Applications :: Perian - Using Quicktime Plugin - Only With The Those Changed From FLV To Mov

Mar 1, 2009

I downloaded Perian so I could view FLV files with quicktime. When I save as, it will save them as a .mov file. When i upload the video to my iweb portfolio, I get this message ( only with the those changed from FLV to .mov) all other videos are fine.

OS X V10.7 Lion :: Quicktime 7 Plugin Has Audio On A Particular Site

Jun 9, 2012

I'm currently having is with the Quicktime 7.7.1 plugin for Firefox. I use Firefox 12, running on OS Lion, and this plugin has some sound issue with a particular site I like to visit. When playing audio midis, it sounds tinny and plunky / compressed.I did not have this problem before Lion, but the plugin does work fine on other sites. I tried to delete the Quicktime app. thinking it somehow became corrupted, but I may be wrong. I had my data transferred from my old mac to the new one I have now. I don't know if that could have affected the QT plugin somehow or what. Info: iMac, Mac OS X (10.7.4)

Applications :: What Latest Version Of QUICKTIME PLUGIN For Chrome

Jan 4, 2011

I am running Snow Leopard 10.6.5 with Google Chrome dev version 10.0.612.3. To access your plugins within Chrome, type 'aboutlugins' into the omnibox. Then to the right, click on the '+ Detail'. Scroll down to see your Quicktime Plugin version. The reason I am asking is as you can see, Chrome says I have an outdated Quicktime Plugin. I followed their link to Apple's Quicktime download page but Apple only offers Quicktime for 10.5 - 10.5.8 ,version 7.6.9 for Leopard. [URL] Anyone able to clear this up? It says I have to 'download a critical security update' for my Quicktime Plugin as you can see from the attachment. The reason this has come to by attention is because the Facebook chat sound notification does NOT work while using Chrome. I did some googling and found that Quicktime may be the problem for the Facebook chat sound notification to not work. So if I do indeed have the latest Quicktime player (7.6.6), then why isn't the sound notification for Facebook not working? Maybe because of something else?

QuickTime :: Avi File Plug In For Divx - What Plugin Is Needed

May 6, 2012

I have no sound in avi files and get a message that I need a plug in for divx. what plug in do I need?.

QuickTime :: Will Plugin Allow To View Multiple Pages In A Tiff File

Jul 5, 2012

I've subscribed to a web-based service that allows me to view court documents online, but QuickTime won't let me view anything more than the first page of these tiff files. The regular version of QuickTime won't allow me to view multiple pages, even if I do uncheck tiff files in the settings. I'm using Google Chrome, but I can't seem to find a good plugin to view multiple tiff pages. The only way I can view multiple pages on a tiff file from this Internet program is to uninstall QuickTime. But if I do that I can't get iTunes to play. I'd go ahead and pay the $30 to upgrade to QuickTime Pro if I thought that would solve my problem, but I don't know if that will work. Does anyone know if QuickTime Pro will allow users to view multiple pages in a Tiff File? Info: QuickTime Pro, Windows Vista, Multiple pages tiff file plugin

Safari :: Safari Gives Error Of Quest Schema Manager Plugin

Apr 14, 2012

Safari keeps giving error: quit unexpectedly while using .QuestSchemaManager.so plugin. Does anyone know what that is? Info: Safari 5.1.5, Mac OS X (10.6.8)

OS X :: Automator Save-as Plugin Not Working - How To Create A Workflow

Jan 2, 2009

I am new to automator. I'm working on a Powerbook G4, in osx.4.11, and I'm trying to save a workflow as a plug-in in automator. When I click file>save as plug-in, nothing happens. I get no pop-up, and no plug-in is saved. I've tried this with various workflows. I'm also having trouble adding actions to the workspace (even ones that make sense to add, i.e. I am following a tutorial to create a workflow that others have made before).

OS X :: Adobe Reader Plugin Not Working In Snow Leopard

Nov 23, 2009

I recently upgraded my HD and did a clean install of Snow Leopard. Before the upgrade, I could view PDFs in both Safari and Firefox in-browser with Adobe Reader. I prefer this to Preview because of the toolbar options. After the upgrade, even though I have Adobe Acrobat Pro and Adobe Reader installed, I can not view PDFs in-browser with it. Safari defaults to Preview as a reader and Firefox defaults to download the PDF (I thought it would install the plugin when I installed the Reader. I can not find an independent reader plugin for firefox online). I am running Safari 4.0.4, Firefox 3.5.5, Adobe Reader 9.2.0, and Adobe Acrobat Pro 8.1.3.

Safari :: SIMBL Error. Failed To Load The Safari-sniffer Plugin, Error(1000) Creating CGSWindow

Feb 26, 2012

I have a problem with safari. Safari quits unexpectly and appear this message : the application safari quit unexpectedly. the problem may have been caused by the flash player-10.4-10.5 plug-in. When i am trying to open again appear this message(SIMBL error. failed to load the safarisniffer plugin. error(1000) creating CGSWindow) and the safari's screen is white Safari's Version 5.0.6 I have the Leopard and 10.5.8 versionProcessor Name:Intel Core 2 DuoProcessor Speed:2.4 GHzMemory:4 GB Info: iMac, Mac OS X (10.5.8), Leopard

Safari :: It Keeps Crashing Because Of A Plugin?

Apr 9, 2012

My safari has been crashing constantly for the past two days. When the screen pops up, its says...Safari has crashed while using the .createyourown.so plugin. I looked in the MacintoshHD->library->internet plugins and did not see it in there. Info: MacBook Pro

Safari :: Cannot Remove 38] Plugin

May 26, 2012

Wanted to remove questionable cookies from Safari. I cannot remove an item called 38] -- says it's a Plug-ins. What is this and how to I remove it if it's bad? Info: iMac, Mac OS X (10.7.4)

Applications :: Plugin For Safari To Use Url Bar As A Search Bar?

Dec 5, 2010

I hope Im posting in the right section. I used google to find a answer but my work was unsuccessful. Is there a plug in for safari to use the url bar as a google search bar? The reason why I can't use google chrome is mobilme. I might sync my bookmarks over the air and I found no way to do this with chrome. I could simply change back to safari but I ll lose the nice search-bar feature.

OS X :: Does Any Ad Blocking Plugin For Safari Work In SL

Aug 28, 2009

I tried to increase the version number max in pithhelmet's plist and it didn't work like it did from safari 3>4.

OS X :: Safari Launched But Plugin Will Not Load

Jan 14, 2010

I have a question about Safari plugins. I was running under Tiger and got the SplashID desktop program with Safari plugin. I decided to upgrade my OS to Leopard so I can use a newly purchased Magic Mouse. Launched Safari and the SplashID plugin would not load. I replaced Safari, its preferences and other files and the plugin will not load. It worked fine in Tiger. I happened to have another internal drive loaded with Leopard from a while back and it's fully updated. I booted from it and installed SplashID and the plugin. Works perfectly! So, why will the Safari plugin not load on my primary drive that was upgraded from Tiger to Leopard versus the same Leopard on my other drive that was a clean install?

Applications :: Safari Flash Plugin

Feb 10, 2010

[URL] it keeps saying i need the flash plugin and no matter how many times i try to view it it wont work,it happens for several other fash things as well,can you view this website on safari? im using a 15in MBP

Intel Mac :: Safari Crashing Due To Plugin

Apr 10, 2012

Just in the past 2 days, Safari will randomly crash with an error: ' Safari quit unexpectedly while using the .GameTurboBooster.so plug-in I followed Googled advice to delete the plug-in by: Launching Safari; Selecting 'Installed Plug-in.' I did not see the plug-in in the error message. Then I checked /Library/Internet Plug-Ins. Again, the errored plug- in was not listed.So, I ran a software update. Safari still crashed.I checked under Finder for all combinations of this plug-in.on how to delete this phantom plug Info:iMac, Mac OS X (10.6.8)

Safari :: 5.1.5 Crash Because Of .RaisedPanelDoors.tmp Plugin

Apr 17, 2012

iMac 27' O/S Snow Leopard 10.6.8 Safari 5.1.5 Foe the past week Safari has been 'quitting unexpectedly while using the .RaisedPanelDoors.tmp plugin' Process:        Safari [199] Path:          /Applications/Safari.app/Contents/MacOS/Safari Identifier:     com.apple.Safari Version:        5.1.5 (6534.55.3) [code].... I've tried for hours to find this plugin on the computer somewhere, but I cannot find it. it doesn't exist, or at least appear, in this path as noted in the error report. PlugIn Path:      /Users/chuck/Library/Application Support/.RaisedPanelDoors.tmp Info: iMac, Mac OS X (10.6.8)

Safari :: Print Via Java Plugin?

Apr 22, 2012

Im doing this Target coupon thing and it keeps saying 'you need to download Java' or something like that. And i have java, the newest version, updated all 3 times apple fought againt that trojan, and it's still not working! Java is enabled and working. Why is this happening? Info: Safari, Mac OS X (10.7.3)

Safari :: Disable The Java Web Plugin In It?

May 15, 2012

dialog box that Java had been disabled for 'security' but it could be enabled...

Safari :: Why Is Plugin List Empty

May 17, 2012

I just upgraded my Safari to the latest version, 5.1.7 and had to install a new version of ClicktoFlash. This plugin installed correctly and now flash is blocked. However, when I go into Safari's preferences, there are NO extensions of any kind. As a result, I have no way to control ClicktoFlash. Why is my extension list empty in Safari's preferences?  You can see in this link the screen for a different user. My screen where the extensions are here is totally blank. Nothing but white. [URL] Info: MacBook Pro, Mac OS X (10.6.8), 8 gigs of RAM, 15: Matte screen

Safari :: 5.1.7 - Adobe PDF Plugin Not Present

May 23, 2012

Using Safari on Snow Leopard 10.6.8, I am suddenly unable to view pdfs - they automatically download and then open in Preview, when previously they would open in a Safari window. I do not have the adobe pdf plugin, having previously removed this months ago. How I can get pdfs to open within a Safari window again? Just to reiterate - the Adobe pdf plugin is not present in either of the internet plug-in folders. Info: Mac OS X (10.6.8)

Quicktime Plugin Firefox

Safari :: How To Disable Java Web Plugin

Quicktime Plugin Edge

Jun 26, 2012

Quicktime Player Plugin Safari Mac

How will disabling the java web plug-in affect my computer performance? The flashback trojan horse virus recently infected my laptop. Apple website suggested disabling the plug-in. Info: MacBook

[mbaljeetsingh]

Hybrid Apps And React Native: A Time To Transition?

Accomplished musicians often talk about how, at certain moments in their careers, they had to unlearn old habits in order to progress. This process often causes them to regress in performance while they adjust to an ultimately better method. Once the new approach is integrated, they are able to reach new heights that would not have been possible with their previous techniques.

Like musicians, all professionals should frequently question their methodologies and see what other options exist. If one approach was previously the best, that does not mean it remains the best. Then again, many established techniques have been the best for decades and might never be surpassed. The important thing is that one is willing to consider alternative approaches and is not too heavily biased towards the one they are most familiar with. This analysis is often more difficult in software development because new frameworks and technologies emerge almost as quickly as they die off.

This article will apply this analysis to hybrid mobile apps and present why I sincerely believe that React Native is in many ways a superior solution for apps developed in 2017, even if it introduces some temporary pains while you’re getting acclimated. To do this, we will revisit why hybrid apps were created initially and explore how we got to this point. Then, within this context, we’ll discuss how React Native stacks up and explain why it is the better approach in most cases.

Further Reading on SmashingMag: Link

An Origin Story Link

It’s 2010. Your company has a pretty awesome web application that uses jQuery (or, if you’re hip, some sort of AngularJS and React precursor like Mustache). You have a team of developers competent in HTML, CSS and JavaScript. All of a sudden, mobile apps are taking over. Everyone has one. Mobile apps are the new Tickle Me Elmo! You frantically research how to make your own mobile app and immediately run into a host of issues. Your team is ill-equipped for the task. You don’t have Java or Objective-C developers. You can’t afford to develop, test and deploy two separate apps!

Not to worry. The hybrid mobile app is your silver bullet. This shiny new technology allows you to quickly and (in theory) easily reuse what you have (code and developers) for your lustrous new mobile app. So, you pick a framework (Cordova, PhoneGap, etc.) and get to work building or porting your first mobile app!

For many companies and developers, their problems were solved. They could now make their very own mobile apps.

Problems Arise Link

Ever since 2010, developer forums, blogs and message boards have been full of arguments about the efficacy of hybrid apps. Despite the great promise and flexibility described in the previous paragraphs, hybrid apps have had and continue to face a very real series of challenges and shortcomings. Here are a few of the most notable problems

User-Experience Shortcomings Link

Over the past couple of years, the bar for UX in mobile apps has risen dramatically. Most smartphone owners spend the majority of their time using only a handful of premier apps5. They, perhaps unfairly, expect any new app they try to be as polished as Facebook, MLB TV, YouTube and Uber.

With this very high bar, it is quite difficult for hybrid apps to measure up. Issues such as sluggish or limited animations, keyboard misbehavior and frequent lack of platform-specific gesture recognition all add up to a clunkier experience, which makes hybrid apps second-class citizens. Compounding this issue is hybrid apps’ reliance on the open-source community to write wrappers for native functionality. Here is a screenshot from an app that highlights all of these issues. This app6 was selected from Ionic’s showcase7 and was created by Morgan Stanley.

8 Screenshot of the app store listing for MS StockPlan (View large version9)

A few things should be immediately apparent. This app has a very low rating (2.5 stars). It does not look like a mobile app and is clearly a port of a mobile web app. Clear giveaways are the non-native segmented control, font size, text density and non-native tab bar. The app does not support features that are more easily implemented when building natively. Most importantly, customers are noticing all of these issues and are summarizing their feelings as “feels outdated.”

User Interface Challenges Link

The majority of users are very quick to uninstall or forget new apps10. It is crucial that your app makes a great first impression and is easily understood by users. A large part of this is about looking sharp and being familiar. Hybrid apps can look great, but they do tend to be more platform-agnostic in their UI (if they look like a web app) or foreign (if they look like an iOS app on Android or vice versa).

Before even installing an app, many would-be customers will review images in the app store. If those screenshots are unappealing or off-putting, the app might not be downloaded at all. Here is an example app found on the Ionic showcase. This app11 was created by Nationwide, and, as you can tell, both apps look just like a mobile-friendly website, rather than a mobile app.

12 Screenshot of the Nationwide app on iOS 13 Screenshot of the Nationwide app on Android

It is clear from the app store reviews (3 stars on both platforms) that this app has several issues, but it is unlikely that any app with this UI would attract new customers. It is clearly only used by existing customers who think they might as well try it out.

Performance Issues Link

The most common complaints about hybrid apps cite poor performance, bugs and crashes. Of course, any app can have these issues, but performance issues have long plagued hybrid apps. Additionally, hybrid apps often have less offline support, can take longer to open and perform worse in poor network conditions. Any developer has heard any of the above called a “bug” and has had their app publicly penalized as a result.

Overall Lack of Premier Apps Link

All of these issues have added up to the vast majority of premier apps being written natively. A quick look at both PhoneGap’s14 and Ionic’s15 showcases demonstrate a noticeable shortcoming in premier apps. One of the most highly touted hybrid apps is Untappd, which despite being a pretty great platform, has fewer than 5 million downloads. This might seem like a large number, but it puts it quite far down the list of most used apps.

Additionally, there is a long list of apps that have migrated from hybrid to native. That list includes Facebook16, TripAdvisor17, Uber18, Instagram3619 and many others.

It would be quite challenging to find a list of high-end apps that have moved from native to hybrid.

Final Defence of Hybrid Apps Link

The point of this section is not to be overly critical of hybrid apps, but to show that there is room for an alternative approach. Hybrid apps have been a very important technology and have been used successfully in many cases. Returning to the Ionic showcase, there are several apps that look better than the ones above. Baskin Robbins20, Pacifica21 and Sworkit22 are three recent examples.

For the past four years, hybrid app developers and frameworks have been working hard to improve their apps, and they have done an admirable job. However, underlying issues and foundational shortcomings remain, and ultimately better options can be found if you’re building a new app in 2017.

Another Approach Link

Although it is clear that hybrid apps do not quite stack up against native apps, their advantages and success can’t be ignored. They help solve very real resource, time and capabilities problems. If there was another approach that solved these same problems, while also eliminating the shortcomings of hybrid apps, that would be extremely appealing. React Native might just be the answer.

Overview and Advantages Link

React Native23 is a cross-platform mobile application development framework that builds on the popular React web development framework. Like React, React Native is an open-source project maintained largely by developers at Facebook and Instagram.

This framework is used to create Android and iOS applications with a shared JavaScript code base. When creating React Native apps, all of your business logic, API calls and state management live in JavaScript. The UI elements and their styling are genericized in your code but are rendered as the native views. This allows you to get a high degree of code reuse and still have a UI that follows each platform’s style guide and best practices.

React Native also allows you to write platform-specific code, logic and styling as needed. This could be as simple as having platform-specific React components or as advanced as using a platform-specific C library in your React Native app24.

Similarities to Hybrid Apps Link

Like hybrid app frameworks, React Native enables true cross-platform development. Instagram has shared that it is seeing between 85 and 99% code reuse25 for its React Native projects. Additionally, React Native is built using technologies (JavaScript and React) that many web developers will be familiar with. In the event that a developer is not familiar with React, it is a dramatically easier to learn if they are familiar with AngularJS, jQuery or vanilla JavaScript than it would be to learn Objective-C or Java.

Additionally, debugging26 React Native apps should also be a familiar process for web developers. This is because it is exceptionally easy to use Chrome’s debugging tools to monitor a code’s behavior. Chrome tools can be used when viewing apps in an emulator or on actual devices. As an added bonus, developers can also use more native debuggers as needed.

27 iOS React Native debugger window

The main takeaway here is that React Native solves the same core problems that hybrid app frameworks set out to solve.

Further Improvements Over Hybrid Apps Link

Unlike hybrid apps, React Native apps run natively, instead of within a web view. This means they are not restricted to web-based UI elements, which can be sluggish when paired with a poor JavaScript interpreter28. Because React Native renders native UI elements, apps immediately feel more at home on the platform and make the user more comfortable on first use. Additionally, developer quality of life can be improved with React Native through more complete use of native tooling and profiling utilities.

Below are two screenshots of a recently released React Native app. These images highlight the platform-specific interface that can be achieved using this framework. As you can see, each app uses its native map and has callouts that follow each platform’s design guidelines. On Android, the callout is a card that rises from the bottom of the map. On iOS, the callout connects to the selected element on the map. The same actions can be performed in both apps, and most of the code is shared, but that extra bit of platform-specific polish really helps with overall usability.

29 Screenshot of the Vett Local app on iOS 30 Screenshot of the Vett Local app on Android (View large version31)

How Is This Done? Link

Below is a sample React Native component. It demonstrates some common elements that make up React Native apps and highlights the areas that web developers should already be familiar with. Following the code snippet is a description of what each section is doing.

import PropTypes from "prop-types"; import React, { PureComponent } from "react"; import { Dimensions, StyleSheet, Text, View } from "react-native"; import LoadingAnimation from "./LoadingAnimation"; import SearchBar from "./SearchBar"; const { width } = Dimensions.get("window"); const styles = StyleSheet.create({ title: { backgroundColor: colors.transparent, color: colors.black, fontSize: 19, fontWeight: "500", }, }); export default class MovieList extends PureComponent { state = { movies: [], filteredMovies: [], loading: true, }; componentWillMount() { this._fetchMovies(); } _fetchMovies = () => { fetch("http://ift.tt/2swy1i4", { method: "GET", }) .then(res => res.json()) .then(res => { this.setState({ movies: res, filteredMovies: res, loading: false, }); }) .catch(err => { this.setState({ error: "Unable to get movies.", }); }); }; _applyFilter = term => { const filteredList = this.state.movies.filter( movie => movie.title.toLowerCase().search(term) !== -1, ); this.setState({ filteredMovies: filteredList, }); }; _renderTitleRow = movie => { const titleLimit = width >= 375 ? 26 : 20; let formattedTitle = movie.title; if (formattedTitle.length > titleLimit) { formattedTitle = formattedTitle.slice(0, titleLimit - 3) + "..."; } return ( <Text numberOfLines={1} style={styles.title} key={movie.id}> {formattedTitle} </Text> ); }; render() { if (this.state.loading) { return ( <View> <LoadingAnimation /> </View> ); } else { return ( <View> <SearchBar onFilterChange={this._applyFilter} /> {this.state.filteredMovies.map(movie => this._renderTitleRow(movie))} </View> ); } } }

Much of the code above should be familiar to most web developers. The vast majority of the code is just JavaScript. Much of the rendering logic will be new, but the migration from HTML to the React Native views is pretty straightforward. Additionally, the style attributes are quite similar to CSS. Let’s walk through some of this code:

state State32 is an object that contains many of the values that our component33 MovieList needs to function. When state properties are changed (using this.setState()), the entire component is re-rendered to reflect those changes.

componentWillMount ComponentWillMount34 is a lifestyle function that is called prior to the component being rendered. Initial network requests often belong in this function.

_fetchMovies This function makes a network request that returns an array of movie objects. After it successfully completes, it updates state with the list and sets loading to false. Note that it also sets the initial filteredMovies to the returned list.

_applyFilter This function is called by our imported SearchBar component. For simplicity’s sake, assume that this function is called (likely with some debounce) whenever the value typed into the SearchBar component is changed. This function just contains some JavaScript that filters the filteredMovies list to the relevant titles.

_renderTitleRow This function outputs the view for a single movie. It contains some logic to make sure our output is uniform and renders a basic text component.

render() This function outputs the view for the component. It conditionally renders the list of movies or a loading animation, depending on the loading value stored in the state object.

Who Is Doing This? Link

When deciding how to build your own application, it is important to learn from industry leaders. Other companies and developers might have wasted years and millions of dollars building applications, and in minutes you can learn from their mistakes and experiences. Here is a quick list of some large companies that are using React Native in their apps: Facebook35, Instagram3619, Airbnb37, Baidu, Discord, Tencent, Uber38 and Twitter39.

Many of these apps were originally written using other approaches but have transitioned fully to React Native or are now using React Native to augment their existing native applications.

There is a notable trend of many premier apps being moved to React Native as a cross-platform solution, whereas, previously, most technology shifts among this class of apps were from cross-platform to platform-specific. This change simply can’t be ignored.

What Should You Do Now? Link

Just like the musician who has to rethink their approach to progress, so too must mobile app developers reconsider their technologies. It is critical that we make decisions based on the best options available and not rely solely on our familiarities. Even if the transition is uncomfortable initially, our industry and the app marketplace are highly competitive and demand that we continue to progress.

React Native is a highly attractive technology that combines the reusability and cost-effectiveness of hybrid apps with the polish and performance of native apps. It is seeing rapid adoption and should be considered as an alternative approach for any upcoming would-be hybrid apps.

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