Reset allow background activity to default on

    @Override

    protected void onDeveloperOptionsSwitchDisabled() {

        super.onDeveloperOptionsSwitchDisabled();

        writeSetting(false);

        ((SwitchPreference) mPreference).setChecked(false);

        writeSetting(true);

        ((SwitchPreference) mPreference).setChecked(true);

    }

}

import android.content.Context;

import android.provider.Settings;

import androidx.preference.PreferenceScreen;

import androidx.preference.SwitchPreference;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.RuntimeEnvironment;

import androidx.preference.PreferenceScreen;

import androidx.preference.SwitchPreference;

@RunWith(RobolectricTestRunner.class)

public class AllowBackgroundActivityStartsPreferenceControllerTest {

    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() {

        mController.onDeveloperOptionsSwitchDisabled();

        final int mode = Settings.Global.getInt(mContext.getContentResolver(),

                Settings.Global.BACKGROUND_ACTIVITY_STARTS_ENABLED, 1 /* default */);

        assertThat(mode).isEqualTo(0);

        verify(mPreference).setChecked(false);

        verify(mPreference).setChecked(true);

        verify(mPreference).setEnabled(false);

    }

}