Nativescript-cli: 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" [email protected] 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?

—
Reply to this email directly or view it on GitHub
https://github.com/NativeScript/nativescript-cli/issues/371#issuecomment-114418053
.

[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.