[BUG] Multiple Issues On Android LG Optimus 90 with 2D Side Scroller

Development Platform & Builds Debugging, Optimization, & Profiling
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1

Branch: 4.3.1

Template: 2D Side Scroller

Device: Android LG Optimus

Launching with: LG D415

Issue 1

Levels do not load properly on launch

Repro:

  • Create two separate levels
  • Load levels via the “Load Level” blueprint.
  • Observe that whichever level was your default level will be reloaded instead of the new one.

Notes:

  • The console command to open the level does not work either.

Current workaround:

  • Launch with the first level set up as default. Then, launch with the second level set up as default.

Issue 2

Tinting colors in the 2D template does not produce the same color when it is published to the Android device.

Reproduction steps:

  • Tint a sprite in a blueprint or in the level editor.
  • Launch to the Android
  • Watch that the tinted color from the engine is not the same that appears on the androi.d
2

Howdy McSean,

Thank you reporting your issue! I have been successful in recreating the first issue. I have written up bug reports on the issue and place it into our bug database so that it may be fixed in a future build.

As for the second issue, I am a bit confused on how you are enabling tint for the sprite components. Any information on it would be greatly appreciated.

Thanks again and have a great day!

3

Thank you so much, fellow Sean!

Here are the repro steps for the sprite issue:

  1. Create a 2D blueprint project

  2. The default level should have an actor called Background_Sprite. Select the actor and tint it a color. The color values of the background on my end are:
    R: 0.3
    G: 0.3
    B: 0.1
    A: 1.0

  3. Launch it on the LG Optimus 90

The result is that the color tint seems to be doing something wonky. Attached are two screenshots of what I’m seeing; the first is how it appears on the PC, the second is how it appears on the phone.

Correct color in editor

12714-mcsean_mobile_pc_coloring.png
12714-mcsean_mobile_pc_coloring.png1289×755 76.6 KB

Incorrect color on phone

12713-mcsean_mobile_incorrect_coloring.png
12713-mcsean_mobile_incorrect_coloring.png959×539 41.4 KB

4

Hello fellow Sean,

This issue was also easily reproduce. Thank you for providing the repro steps for that. I have entered a bug report for that as well so that it may be fixed in a future release.

Thanks again and have a great day!

5

I found a workaround for the first problem. Instead of using “Launch (on Android Device)”, you have to package the project (File → package project → Android). After the app was packed, go to the set directory and run the .bat.

Even the load map command via console is working fine.

6

Thank you for the workaround DaDare. In the Documentation of Launching to devices, It states that this is not available: Launching Unreal Engine Projects on Devices | Unreal Engine Documentation

7

I see, it’s not a bug it’s a feature. If you think about it, it does make sense.

Maybe checking the docs isn’t a bad idea at all…