如何在导航抽屉中进行切换功能？

Question

I'm trying to make a navigation drawer switch which switches between a normal theme and a dark theme of an app, however I can't get the switch to work.

I already have a working switch on mainactivity but I can't get it to work in the navigation drawer.

This is the code to switch between light/dark mode.

    @Override
    protected void onCreate(Bundle savedInstanceState) {


        if(AppCompatDelegate.getDefaultNightMode()==AppCompatDelegate.MODE_NIGHT_YES) {
            setTheme(R.style.HROTheme);
        }
        else setTheme(R.style.AppTheme);


        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        modeswitch=(Switch)findViewById(R.id.switch2);
        if (AppCompatDelegate.getDefaultNightMode()==AppCompatDelegate.MODE_NIGHT_YES) {
            modeswitch.setChecked(true);
        }
        modeswitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
                    recreate();
                }
                else {
                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
                    recreate();
                }
            }
        });

Answer 1

You can try to add an item in values/attrs like this: <attr name="bottomback" format="color" />

Then define "bottomback" in styles for your both dark and light styles like this:

<item name="bottomback">#000</item>

That must be different in both styles. now you can set the backgroundTint of drawer as this: android:backgroundTint="?attr/bottomback"