Fix: getConfiguration().locale field was deprecated in API level 24 + example fix

[janstol]

Configuration.locale

This field was deprecated in API level 24.
Do not set or read this directly. Use getLocales() and setLocales(android.os.LocaleList). If only the primary locale is needed, getLocales().get(0) is now the preferred accessor.

Also updated (fixed) example...

[vintage]

Thanks, looks good! Just one comment about reusing the code.

[vintage]

How about moving the part activity.getResources().getConfiguration() outside of conditional statements to avoid code repetition? We would have something like:

Configuration config = activity.getResources().getConfiguration();
Locale locale;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
    locale = config.getLocales().get(0);
} else {
    locale = config.locale;
}

[janstol]

Sure, good point. Done.

[vintage]

Just tested the changes on Android 9 (OnePlus 6t) - works as expected. As it's always good to be aligned with the deprecations of the platforms, @rxlabz can you give it a look?

[Piyushbisen]

package com.example.newgenrationdairy;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.view.View;
import android.widget.Button;
import androidx.fragment.app.FragmentManager;

import java.util.Locale;

public class test extends AppCompatActivity {

public static FragmentManager fragmentManager;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_test);
    fragmentManager = getSupportFragmentManager();
    loadLocale();
    Button changeLan = findViewById(R.id.changel);
    Button login = findViewById(R.id.btnlogin);
    changeLan.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            showChangeLanguageDialog();
        }
    });
    login.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            test.fragmentManager.beginTransaction().replace(R.id.test_layout,new Homepage(),null).addToBackStack(null).commit();
        }
    });

}



private void showChangeLanguageDialog() {
    final String[] listItems = {"English", "हिन्दी"};
    AlertDialog.Builder mBuilder = new AlertDialog.Builder(test.this);
    mBuilder.setTitle("Choose Language..");
    mBuilder.setSingleChoiceItems(listItems, -1, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {

            if (i == 0){
                setLocale("en");
                recreate();
            }

            else if (i == 1){
                setLocale("hi-rIN");
                recreate();
            }

            dialogInterface.dismiss();

        }
    });

    AlertDialog mDialog = mBuilder.create();
    mDialog.show();
}

private void setLocale(String lang) {
    Locale locale = new Locale(lang);
    Locale.setDefault(locale);
    Configuration config = new Configuration();
    config.locale = locale;
    getBaseContext().getResources().updateConfiguration(config, getBaseContext().getResources().getDisplayMetrics());
    SharedPreferences.Editor editor = getSharedPreferences("Settings", MODE_PRIVATE).edit();
    editor.putString("My_Lang", lang);
    editor.apply();
}

public void loadLocale() {
    SharedPreferences prefs = getSharedPreferences("Settings", Activity.MODE_PRIVATE);
    String language = prefs.getString("My Lang", "");
    setLocale(language);
}

}

i have a problem with config.locale = locale; help me