Android Question Turn off dark mode, or some other screen color issue [solved]

Didier9 · Oct 22, 2019

Apparently my old apps turn ugly when the new dark mode of Android 10 is enabled (actually when I set the targetSDK to 26...)
Until I have the time (and knowledge) how to fix this problem properly, is there a way to prevent an app from using the dark theme?

Erel · Oct 22, 2019

This is strange, dark mode should only be applied when you are using a special theme: https://www.b4x.com/android/forum/threads/best-practice-for-android-dark-theme.109667/#content

Try to call SetDefaultNightMode with 1 'MODE_NIGHT_NO

Didier9 · Oct 22, 2019

Thank you, I will try tonight.
Just a quick note before heading out, this is the manifest:

B4X:

AddManifestText(
<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="21"/>
<supports-screens android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true"
    android:anyDensity="true"/>)
SetApplicationAttribute(android:icon, "@drawable/icon")
SetApplicationAttribute(android:label, "$LABEL$")
'End of default text.
SetActivityAttribute(main, android:windowSoftInputMode, adjustResize|stateHidden)
AddManifestText(
<uses-permission
  android:name="android.permission.WRITE_EXTERNAL_STORAGE"
  android:maxSdkVersion="26" />
)

The problem shows up after I change the targetSdkVersion from 21 to 26
I have tried on both Android 9 and Android 10 and both do it, maybe it's not the dark theme?

Erel · Oct 22, 2019

Didier9 said:
AddManifestText(
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="26" />
)

This is a mistake. Watch the runtime permissions video tutorial.

You are also missing the theme setting:

B4X:

CreateResourceFromFile(Macro, Themes.DarkTheme)

Or LightTheme.

The issue you encounter is not related to dark mode.
Post a screenshot.

Didier9 · Oct 22, 2019

Ok, this is an older project (started from an older example) and it has not been updated for the current permission protocol or theme setting. There may have been other issues as well. I will post a screen shot tonight.

Shelby · Oct 22, 2019

I just noticed that your manifest shows that your minSdkVersion is 21 and the maximum is also 21. My minimums (which I think are default) are 5. I just wanted to point that out, although this could be a common usage that I'm not aware of.

Didier9 · Oct 23, 2019

Not sure why I set the min to 21, must have been an experiment. Most my other apps have 5, I still have a couple of tablets running Android 4.0.4... I changed it back to 5 to check it on an old tablet...

I have uploaded two sets of screenshots for two activities of my app, one set with targetSdkVersion=21 and one set with targetSdkVersion=26
These screen shots were taken on a Moto-X4 running Android 9. They look the same on the Pixel 2XL (Android 10)

Didier9 · Oct 23, 2019

I changed the targetSdkVersion from 21 to 26 one by one and the change takes place at 24.

Didier9 · Oct 23, 2019

Erel said:
You are also missing the theme setting:

B4X:

CreateResourceFromFile(Macro, Themes.DarkTheme)

Or LightTheme.

I put this statement in the manifest and it cleared the problem. Now using targetSdkVersion=28

Thank you!

Android Question Turn off dark mode, or some other screen color issue [solved]

Didier9

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