是否有可能在使用Android资源的同时以编程方式改变应用程序的语言?

如果不是,是否可以用特定的语言请求资源?

我想让用户改变应用程序的语言从应用程序。


当前回答

这里列出的解决方案没有一个对我有用。

如果AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES),语言没有在android >= 7.0上切换

这个LocaleUtils工作得很好: https://gist.github.com/GigigoGreenLabs/7d555c762ba2d3a810fe

LocaleUtils

public class LocaleUtils {

public static final String LAN_SPANISH      = "es";
public static final String LAN_PORTUGUESE   = "pt";
public static final String LAN_ENGLISH      = "en";

private static Locale sLocale;

public static void setLocale(Locale locale) {
    sLocale = locale;
    if(sLocale != null) {
        Locale.setDefault(sLocale);
    }
}

public static void updateConfig(ContextThemeWrapper wrapper) {
    if(sLocale != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        Configuration configuration = new Configuration();
        configuration.setLocale(sLocale);
        wrapper.applyOverrideConfiguration(configuration);
    }
}

public static void updateConfig(Application app, Configuration configuration) {
    if(sLocale != null && Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
        //Wrapping the configuration to avoid Activity endless loop
        Configuration config = new Configuration(configuration);
        config.locale = sLocale;
        Resources res = app.getBaseContext().getResources();
        res.updateConfiguration(config, res.getDisplayMetrics());
    }
}
}

将此代码添加到应用程序

public class App extends Application {
public void onCreate(){
    super.onCreate();

    LocaleUtils.setLocale(new Locale("iw"));
    LocaleUtils.updateConfig(this, getBaseContext().getResources().getConfiguration());
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    LocaleUtils.updateConfig(this, newConfig);
}
}

活动中的代码

public class BaseActivity extends AppCompatActivity {
    public BaseActivity() {
        LocaleUtils.updateConfig(this);
    }
}

其他回答

我改变了德语为我的应用程序开始自己。

这是我的正确密码。有人想用这个来代替我吗? (如何在android中编程改变语言)

我的代码:

Configuration config ; // variable declaration in globally

// this part is given inside onCreate Method starting and before setContentView()

public void onCreate(Bundle icic) 
{
    super.onCreate(icic);
    config = new Configuration(getResources().getConfiguration());
    config.locale = Locale.GERMAN ;
    getResources().updateConfiguration(config,getResources().getDisplayMetrics());

    setContentView(R.layout.newdesign);
}

只是多添了一块,把我绊倒了。

而其他的答案,比如“de”,都没问题

String lang = "de";
Locale locale = new Locale(lang); 
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
getBaseContext().getResources().updateConfiguration(config, 
    getBaseContext().getResources().getDisplayMetrics());

上面不会工作,例如“fr_BE”地区,所以它将使用values-fr-rBE文件夹或类似的。

需要以下轻微更改工作与“fr_BE”

String lang = "fr";

//create a string for country
String country = "BE";
//use constructor with country
Locale locale = new Locale(lang, country);

Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
getBaseContext().getResources().updateConfiguration(config, 
    getBaseContext().getResources().getDisplayMetrics());
Locale locale = new Locale("en");
Locale.setDefault(locale);

Configuration config = context.getResources().getConfiguration();
config.setLocale(locale);
context.createConfigurationContext(config);

重要更新:

context.getResources().updateConfiguration(config, context.getResources().getDisplayMetrics());

注意,在SDK >= 21上,你需要调用' resources . updateconfiguration()',否则资源将不会被更新。

这段代码真的可以工作:

fa = 波斯语,en = 英语

注意:语言代码不能有“-”,必须是2个小写字母

在languageToLoad变量中输入您的语言代码:

import android.app.Activity;
import android.content.res.Configuration;
import android.os.Bundle;

public class Main extends Activity {
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    String languageToLoad  = "fa"; // your language
    Locale locale = new Locale(languageToLoad); 
    Locale.setDefault(locale);
    Configuration config = new Configuration();
    config.locale = locale;
    getBaseContext().getResources().updateConfiguration(config, 
      getBaseContext().getResources().getDisplayMetrics());
    this.setContentView(R.layout.main);
  }
}

2021年6月更新(Kotlin):

class Main : Activity() {
    // Called when the activity is first created.
    public override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        
        val config = resources.configuration
        val lang = "fa" // your language code
        val locale = Locale(lang)
        Locale.setDefault(locale)
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
            config.setLocale(locale)
        else
            config.locale = locale

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
            createConfigurationContext(config)
        resources.updateConfiguration(config, resources.displayMetrics)

        this.setContentView(R.layout.main)
    }
}

对我来说,最好的解决办法是: https://www.bitcaal.com/how-to-change-the-app-language-programmatically-in-android/

package me.mehadih.multiplelanguage;

import androidx.appcompat.app.AppCompatActivity;

import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;
import android.os.Bundle;
import android.util.DisplayMetrics;

import java.util.Locale;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setApplicationLocale("az"); // short name of language. "en" for English
        setContentView(R.layout.activity_main);

    }

    private void setApplicationLocale(String locale) {
        Resources resources = getResources();
        DisplayMetrics dm = resources.getDisplayMetrics();
        Configuration config = resources.getConfiguration();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            config.setLocale(new Locale(locale.toLowerCase()));
        } else {
            config.locale = new Locale(locale.toLowerCase());
        }
        resources.updateConfiguration(config, dm);
    }
}