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。
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)
}
}
其他回答
对每应用语言偏好的支持刚刚添加到API 33 (Android 13,提拉米苏目前在开发者预览版)。
要改变应用程序的语言环境,只需从LocaleManager调用setApplicationLocales:
// Set app locale to pt-BR (Portuguese, Brazil)
getSystemService(LocaleManager::class.java)
.applicationLocales = LocaleList(Locale.forLanguageTag("pt-BR"))
详见https://developer.android.com/about/versions/13/features/app-languages#api-impl
我已经写了一篇关于这个功能的文章https://proandroiddev.com/exploring-the-new-android-13-per-app-language-preferences-8d99b971b578
您可以要求用户在第一个屏幕中选择语言并将其保存在SharedPreferences中
SharedPreferences.Editor editor = getSharedPreferences("data", MODE_PRIVATE).edit();
editor.putString("lang", "si");
editor.apply();
recreate();
然后你可以在应用程序中的每个Activity中使用它。这里我设置了英语和僧伽罗语。
@Override
protected void attachBaseContext(Context base) {
SharedPreferences prefs = base.getSharedPreferences("uinfo", MODE_PRIVATE);
String restoredText = prefs.getString("lang", "No name defined");
if (restoredText.equals("si")){
super.attachBaseContext(LocaleHelper.localeUpdateResources(base, "si"));
}else{
super.attachBaseContext(LocaleHelper.localeUpdateResources(base, "en"));
}
}
这是你的localUpdateResources方法。把它放在LocalHelper类中
public class LocaleHelper {
public static Context localeUpdateResources(Context context, String languageCode) {
Context newContext = context;
Locale locale = new Locale(languageCode);
Locale.setDefault(locale);
Resources resources = context.getResources();
Configuration config = new Configuration(resources.getConfiguration());
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
config.setLocale(locale);
newContext = context.createConfigurationContext(config);
} else {
config.locale = locale;
resources.updateConfiguration(config, resources.getDisplayMetrics());
}
return newContext;
}
}
在设置内容之前,应该在每个活动中设置区域配置- this.setContentView(r.b ayout.main);
唯一完全适合我的解决方案是结合Alex Volovoy的代码和应用程序重启机制:
void restartApplication() {
Intent i = new Intent(MainTabActivity.context, MagicAppRestart.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
MainTabActivity.context.startActivity(i);
}
/** This activity shows nothing; instead, it restarts the android process */
public class MagicAppRestart extends Activity {
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
finish();
}
protected void onResume() {
super.onResume();
startActivityForResult(new Intent(this, MainTabActivity.class), 0);
}
}
阿拉伯语/RTL支持
您必须通过- attachBaseContext()更新您的语言设置。 对于android版本N及以上,您必须使用createconfigationcontext () & updateConfiguration() -否则RTL布局无法正常工作
@Override protected void attachBaseContext(Context newBase) { super.attachBaseContext(updateBaseContextLocale(newBase)); } public Context updateBaseContextLocale(Context context) { String language = SharedPreference.getInstance().getValue(context, "lan");//it return "en", "ar" like this if (language == null || language.isEmpty()) { //when first time enter into app (get the device language and set it language = Locale.getDefault().getLanguage(); if (language.equals("ar")) { SharedPreference.getInstance().save(mContext, "lan", "ar"); } } Locale locale = new Locale(language); Locale.setDefault(locale); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { updateResourcesLocale(context, locale); return updateResourcesLocaleLegacy(context, locale); } return updateResourcesLocaleLegacy(context, locale); } @TargetApi(Build.VERSION_CODES.N) private Context updateResourcesLocale(Context context, Locale locale) { Configuration configuration = context.getResources().getConfiguration(); configuration.setLocale(locale); return context.createConfigurationContext(configuration); } @SuppressWarnings("deprecation") private Context updateResourcesLocaleLegacy(Context context, Locale locale) { Resources resources = context.getResources(); Configuration configuration = resources.getConfiguration(); configuration.locale = locale; resources.updateConfiguration(configuration, resources.getDisplayMetrics()); return context; }