Change application language programmatically

BaseActivity.java

package com.amir_p.myapplication;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;

import java.util.Locale;

@SuppressLint("Registered")
public class BaseActivity extends AppCompatActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    protected void attachBaseContext(Context newBase) {
        Locale locale = new Locale(AppController.getInstance().sLocale);
        Configuration configuration = newBase.getResources().getConfiguration();
        configuration.setLocale(locale);
        super.attachBaseContext(newBase.createConfigurationContext(configuration));
    }
}

MainActivity.java

package com.amir_p.myapplication;

import android.os.Bundle;

public class MainActivity extends BaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}