I have an old project that supports multi-languages. I want to upgrade support library and target platform, Before migrating to Androidx
everything works fine but now change language not work!
I use this code to change default locale of App
private static Context updateResources(Context context, String language)
{
Locale locale = new Locale(language);
Locale.setDefault(locale);
Configuration configuration = context.getResources().getConfiguration();
configuration.setLocale(locale);
return context.createConfigurationContext(configuration);
}
And call this method on each activity by override attachBaseContext
like this:
@Override
protected void attachBaseContext(Context newBase)
{
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
String language = preferences.getString(SELECTED_LANGUAGE, "fa");
super.attachBaseContext(updateResources(newBase, language));
}
I try other method to get string and I noticed that getActivity().getBaseContext().getString
work and getActivity().getString
not work. Even the following code does not work and always show app_name
vlaue in default resource string.xml.
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/app_name"/>
I share a sample code in https://github.com/Freydoonk/LanguageTest
Also getActivity()..getResources().getIdentifier
not work and always return 0!
Finally, I find the problem in my app. When migrating the project to Androidx
dependencies of my project changed like this:
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'androidx.appcompat:appcompat:1.1.0-alpha03'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.android.material:material:1.1.0-alpha04'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0-alpha02'
}
As it is seen, version of androidx.appcompat:appcompat
is 1.1.0-alpha03
when I changed it to the latest stable version, 1.0.2
, my problem is resolved and the change language working properly.
I find the latest stable version of appcompat
library in Maven Repository. I also change other libraries to the latest stable version.
Now my app dependencies section is like bellow:
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.android.material:material:1.0.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}