CODEWITHSUNDEEP
androidandroid-intent
AykutE
AykutE

Reputation: 344

Getting Intent Extras from Activity before onCreate method

Is there any way to get intent extras inside attachBaseContext() method?

The Activity i am using is inside the framework project. I need to set Activity's language with attachBaseContext() method like:

@Override
protected void attachBaseContext(Context newBase) {
   super.attachBaseContext(LanguageContextWrapper.wrap(newBase, "en"));
}

I am sending language code string to Activity with intent.putExtra(). When i try to get extras inside attachBaseContext(), it throws NullPointerException error. How can it be done? Thanks.

Upvotes: 3

Views: 1484

Answers (1)

Kevin Marlow
Kevin Marlow

Reputation: 891

TL;DR - To the best of my knowledge, this is impossible.

This is because Android calls attachBaseContext as soon as it attaches the Activity as can be seen here. Later, the intent is set inside the Activity class.

An alternative solution would be to store the variables in your Application subclass or in an application scoped repository of some kind.

For example,

@Override protected void attachBaseContext(Context newBase) { String someLanguage = ((MyApplication)newBase.getApplicationContext()).getAppLanguage(); super.attachBaseContext(LanguageContextWrapper.wrap(newBase, someLanguage)); }

You could easily adapt this to use a repository pattern with Dagger or even SharedPreferences.

Upvotes: 1

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