CODEWITHSUNDEEP
androidandroid-configchangesandroid-night-mode
Eren Tüfekçi
Eren Tüfekçi

Reputation: 2511

How to Handle Transition of Night Mode?

We implemented night mode to our application. it works like a charm except for its transition. We are using the Base Application class to implement it. The problem is no matter what we tried we couldn't achieve a smooth transition when the configuration changes.

We tried to implement enter and exit animation in our style. But it applies to the whole activity. So it also affects others transitions of the activity. So it didn't work.

As can be seen from the image there is a black blinking appear on the screen when the configuration changes.

enter image description here

Configuration Change Code :

   public static void applyTheme(@NonNull String themePref) {
    switch (themePref) {
        case LIGHT_MODE: {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);

            Log.d(Statics.LOG_TAG, "Applying day mode");
            break;
        }
        case DARK_MODE: {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
            Log.d(Statics.LOG_TAG, "Applying night mode");
            break;
        }
        default: {
            Log.d(Statics.LOG_TAG, "Applying automatic mode");
            if (BuildCompat.isAtLeastP()) {
                AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM);
            } else {
                AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY);
            }
            break;
        }
    }
}

Thanks for reading this. Any help is appreciated.

Upvotes: 3

Views: 1709

Answers (3)

Nwadinigwe Michael
Nwadinigwe Michael

Reputation: 11


day_night=findViewById(R.id.day_night);
    day_night.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if (isChecked) {
                getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO);
            }
            else {
                getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_YES);
            }
        }
    });```

Upvotes: 0

Gaurav Dureja
Gaurav Dureja

Reputation: 190

Add the following code after setting the theme, works for me

Intent intent = getIntent();
overridePendingTransition(0, 0);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
finish();
overridePendingTransition(0, 0);
startActivity(intent);

Upvotes: 0

Dheeraj Singh Bhadoria
Dheeraj Singh Bhadoria

Reputation: 377

Please use the following code it is working perfect -

//Does not work in Android Nugget
public void setDayNightMode(boolean day) {
    if (day)
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
    else
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
    getWindow().setWindowAnimations(R.style.WindowAnimationFadeInOut);
    recreate();
}

//Style
<style name="WindowAnimationFadeInOut">
    <item name="@android:windowEnterAnimation">@anim/fade_in</item>
    <item name="@android:windowExitAnimation">@anim/fade_out</item>
</style>



  // fade in inside anim folder 
  <set xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha
        android:duration="1000"
        android:fromAlpha="0"
        android:interpolator="@android:anim/decelerate_interpolator"
        android:toAlpha="1.0" />
   </set>
 
   // fade out inside anim folder
   <set xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha
        android:duration="1500"
        android:fromAlpha="1.0"
        android:interpolator="@android:anim/decelerate_interpolator"
        android:toAlpha="0" />
    </set>

I tested it it is working

Upvotes: 1

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