How to disable night mode in my application even if night mode is enable in android 9.0 (pie)?

Question

I created my application before the android pie has been released, in every layout I put android: background = \"white\" it works fine in every device, but when

Answer 1

In themes.xml change:

<style name="Theme.MyApp" parent="Theme.MaterialComponents.DayNight.DarkActionBar">

to

<style name="Theme.MyApp" parent="Theme.MaterialComponents.Light.DarkActionBar">

Answer 2

in layout of your activity that you want to disable force dark, place following attribute in parent layout:

android:forceDarkAllowed="false"

your layout should be like this:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:forceDarkAllowed="false">

<!-- ..... -->

</androidx.constraintlayout.widget.ConstraintLayout>

Answer 3

Tested using Xiaomi Note 8 Pro MIUI 12.0.2 Android 10

Adding AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO); to MainActivity.onCreate(); doesn't seems to be working

The working solution was to add <item name="android:forceDarkAllowed">false</item> inside our main AppTheme block in styles.xml

Example:

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
    <item name="android:forceDarkAllowed" tools:targetApi="q">false</item>
</style>

Answer 4

If you want to avoid Activity recreations you could set the flag on the Application class as mentioned here

I recommend setting it in your application class (if you have one) like so:

public class MyApplication extends Application {
    
    public void onCreate() {
        super.onCreate();
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
    }
}

Answer 5

use this as parent for disable dark mode parent="Theme.AppCompat.Light.NoActionBar

Answer 6

What suggested by Ali Rezaiyan is the correct way to proceed if you want disable the night mode all over your app.

Sometimes you just need to disable the night mode on some activities or fragment only (maybe because of legacy stuff).

So you can choose what to do:

• Disable all over the app:

  • AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)

• Disable for a single Activity:

  • getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO);
  • After calling this you probably need to call recreate() for this to take effect