Locale Changing within app is not working

Question

I am trying to change the language of the app but it's not happening.I have tried almost all solutions available in SO but none worked. Interesting fact is most of the codes are able to change the language of the Facebook Account Kit activity but other activity's language is not being changed.Below is my application class and manifest file.

public class MyApplication extends Application {


    private Locale locale = null;

    @Override
    public void onConfigurationChanged(Configuration newConfig)
    {
        super.onConfigurationChanged(newConfig);
        if (locale != null)
        {
            newConfig.locale = locale;
            Locale.setDefault(locale);
            getBaseContext().getResources().updateConfiguration(newConfig, getBaseContext().getResources().getDisplayMetrics());
        }
    }

    @Override
    public void onCreate()
    {
        super.onCreate();
        Configuration config = getBaseContext().getResources().getConfiguration();

        new SharedPrefManager(this).setLanguage("fr");
        String lang = new SharedPrefManager(this).getLanguage();

        locale = new Locale(lang);
        Locale.setDefault(locale);
        config.locale = locale;
        getBaseContext().getResources().updateConfiguration(config, getBaseContext().getResources().getDisplayMetrics());
        AccountKit.initialize(getApplicationContext());
    }


}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.pullerr.pullerrdriver">
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.RECEIVE_SMS"/>
    <uses-permission android:name="android.permission.CHANGE_CONFIGURATION"/>
    <application
        android:name=".MyApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <meta-data android:name="com.facebook.accountkit.ApplicationName"
            android:value="@string/app_name" />
        <meta-data android:name="com.facebook.sdk.ApplicationId"
            android:value="@string/FACEBOOK_APP_ID" />
        <meta-data android:name="com.facebook.accountkit.ClientToken"
            android:value="@string/ACCOUNT_KIT_CLIENT_TOKEN" />
        <meta-data android:name="com.facebook.accountkit.FacebookAppEventsEnabled"
            android:value="false"/>

        <activity
            android:name="com.facebook.accountkit.ui.AccountKitActivity"
            android:theme="@style/AppLoginTheme"
            tools:replace="android:theme"/>
        <activity
            android:configChanges="layoutDirection|locale"
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAINACTIVITY" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:configChanges="layoutDirection|locale"
            android:name=".LoadDetails"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.LOADDETAILS" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:configChanges="layoutDirection|locale"
            android:name=".Login"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:configChanges="layoutDirection|locale"
            android:name=".Register"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.REGISTER" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <service android:name="services.LocationService"/>
    </application>

</manifest>

Answer 1

You can change your language (i18N) as below :

public static void changeLanguage(String language, Context context) {
    try {
        if ( null != language) {
            Locale locale = new Locale(language); 
            Locale.setDefault(locale);
            Configuration config = new Configuration();
            config.locale = locale;
            context.getResources().updateConfiguration(config, context.getResources().getDisplayMetrics());
        }

        Log.i(TAG, "Language changed to " + language);
    } catch (Exception e) {
        Log.e(TAG, "[changeLanguage]" + e.getMessage());
    }

}

I have one open-source project on GitHub. Drive-in yourself at https://github.com/configurer/easy-screen-lock/blob/master/EasyScreenLock/src/com/configurer/easyscreenlock/utils/LanguageUtils.java

Answer 2

check this links maybe it helps

How to programmatically change language?

http://blog.nkdroidsolutions.com/change-language-programmatically-android-app-building-multi-language-supported-app/

https://developer.android.com/training/basics/supporting-devices/languages.html

Change languages in app via strings.xml