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.NET for Android provides open-source bindings of the Android SDK for use with .NET managed languages such as C#
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BOOT_COMPLETED receiver performance issue on Xamarin.Android app vs. Native app #1862

Closed izzyco closed 6 months ago

izzyco commented 6 years ago

Steps to Reproduce

  1. Build and run the Xamarin.Android/Native application once
  2. Remove the application from background
  3. Cold boot the device
  4. The time we are referring to is when the OS initializes and sends out the BOOT_COMPLETED intent and the app receives it and opens ups the MainActivity.

Xamarin.Android App Sample

Native App Sample

Behaviors

The native Android application receives the intent and starts the activity within 7 seconds based off of testing on my device. The Xamarin.Android application takes about 20 seconds, three times as long. We have already enabled AOT and LLVM to increase performance as well.

Current Ask

Is there anything on the roadmap to reduce this startup time or anything else we can do to start the application as soon as possible?

Version Information

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Log File

mihirao commented 6 years ago

Hi, I have noticed a delay in the launcher app on our embedded device. Here are the timings that I notice with xamain and native apps:

Xamarin android app Cold boot time : 16sec Boot to home screen : 54sec Time from Home Screen to App: 1min 3 sec.

Native App : Cold boot time : 8 sec Boot to home screen: 58 sec Time from Home Screen to App: 1sec or less .

There is a significant delay when we use the xamain.android app when we launch the app on the bootup.

jonathanpeppers commented 6 years ago

@izhang1 @mihirao so my initial question is there as much of a difference if you take Cold boot the device out of the equation?

Is this issue really just about general startup time?

We have started planning several tasks around startup time: https://github.com/xamarin/xamarin-android/projects/8

I also think that the fix for issue https://github.com/xamarin/xamarin-android/issues/1544 (PR https://github.com/xamarin/xamarin-android/pull/1855) will help.

mihirao commented 6 years ago

Yes, we have noticed so much diffrence between when we launch the xamarin app versus native app after the boot up is completed

izzyco commented 6 years ago

@jonathanpeppers So the cold boot is to initiate the BOOT_COMPLETED intent from the OS to trigger the app to start automatically. If a user opens the application there's no delay between a native and Xamarin.Android app in the sample above.

jpobst commented 6 months ago

With support for Classic Xamarin.Android ended May 1st, 2024, this issue is likely no longer relevant.

If this still persists in .NET 8+, please open a new issue with updated information based on net8.0-android or greater. Please include a link to this issue for context.