Startup is extremely slow on Android

[brianchirls]

The Hello World application often takes a very, very long time to show any interface and run the loaded callback. The last time I ran it on the emulator (X86 emulator with HAX installed), it took 37 seconds from the time the app showed up with a blank white screen and menu bar. I've seen it take long enough to get a "not responding" warning. It's also slow running on my actual device (Nexus 4).

I don't have this problem with other Android apps I built in pure Java with Android Studio. Start-up of Hello World on the iOS emulator is instantaneous.

[rosen-vladimirov]

Hi @brianchirls
Thank you for your feedback. In fact speeding up android apps is our top priority for version 1.0. Currently the apps are starting slow on Android 5.*
One more thing - the speed up of emulator with HAX is possible when only a single emulator is running. In case you have running emulator and you start a second one, the performance will be as the default ARM images.

[cime]

I tried it today with the latest version of NativeScript on Nexus 4 (Android 5.1) and startup time is still slow (about 5-6 seconds until TAP button is shown)

$ tns --version
1.0.1

[bfattori]

Just tried this in 1.1.1 and my "app" (a XML page, no code beyond the basic app.js) takes 13 seconds to start. This is really pretty unacceptable. No one waits for a web page beyond 3 seconds, and they sure as hell don't want to wait 13 seconds for a "native" app to start. This needs to be improved.

[teobugslayer]

Hello @bfattori,

indeed, 13 seconds are abnormally high. Can you tell us what device are you using for your test and which OS version it runs?

[bfattori]

I'm sorry, I jumped the gun. That was on the emulator. On device it is a
very acceptable 3-4 seconds.

You can reclose the issue.
On Jun 23, 2015 5:25 AM, "Todor Totev" notifications@github.com wrote:

Hello @bfattori https://github.com/bfattori,

indeed, 13 seconds are abnormally high. Can you tell us what device are
you using for your test and which OS version it runs?

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Reply to this email directly or view it on GitHub
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[CleverCoder]

I dunno... running the "Groceries" 'angular-start' code, with very, very basic code takes 5-6 seconds on my Nexus 6 device. This is pretty bad. I may re-open this or log a new issue if it continues this way. I don't even know where to begin profiling, since it's Nativescript.

[robertonic]

The app I'm currently writing takes at least 7 seconds before anything is shown on a Nexus 7. This is too slow. N.B. This isn't a release build and I'm not sure if that would be faster.

I'm using Nativescript 2 + Angular + Typescript.

[kazemihabib]

I have the same problem
I'm using Nativescript 2 + Angular + Typescript.

[robertonic]

Is startup time for Android going to be improved in future releases? Currently I think it's so slow that NativeScript is close to unusable on Android. Can this issue be re-opened?

[robertonic]

Just rebuilt my app using Nativescript but not using Angular 2. Startup is now much faster and acceptable. (~3 seconds). The slow factor seems to have been Angular 2.

[dstamenkovic]

Same issue here, without Angular app startup is much faster. Tested on Android 6.

[tomcatmwi]

How do you guys get a refresh in 5-6 seconds? It's 5-6 minutes for me, but a fresh build sometimes takes 20-25 minutes with a blank new app. It doesn't matter if it's Angular or not. It's a Samsung J1 with Android 6.0.1.

[matiasratcliffe]

As for May 09/2018, nativescript 4.0.0, I run the javascript template, and it takes 5 seconds tops to run. However, when I go for the angular template, and even after I enableProdMode(), I get no less than 24 seconds every time, on my moto c plus, android 7.0;
Here is my package.json:

{
"description": "NativeScript Application",
"license": "SEE LICENSE IN ",
"readme": "NativeScript Application",
"repository": "",
"nativescript": {
"id": "org.nativescript.testang",
"tns-android": {
"version": "4.0.1"
}
},
"dependencies": {
"@ angular/animations": "~5.2.0",
"@ angular/common": "~5.2.0",
"@ angular/compiler": "~5.2.0",
"@ angular/core": "~5.2.0",
"@ angular/forms": "~5.2.0",
"@ angular/http": "~5.2.0",
"@ angular/platform-browser": "~5.2.0",
"@ angular/platform-browser-dynamic": "~5.2.0",
"@ angular/router": "~5.2.0",
"nativescript-angular": "~5.3.0",
"nativescript-theme-core": "~1.0.4",
"reflect-metadata": "~0.1.8",
"rxjs": "~5.5.2",
"tns-core-modules": "~4.0.0",
"zone.js": "~0.8.2"
},
"devDependencies": {
"babel-traverse": "6.26.0",
"babel-types": "6.26.0",
"babylon": "6.18.0",
"lazy": "1.0.11",
"nativescript-dev-typescript": "~0.7.0",
"typescript": "~2.7.2"
}
}
Note that there are no spaces after the 'at' symbol in my real file, this was the only way I could escape githubs account reference mechanism

[dtopuzov]

Hi @matiasratcliffe

Can you please try with NativeScript 4.1 and Angular 6, it contains a lot of performance improvements, specially in case you optimize your app with webpack.