运行时切换XML字符串语言：点击按钮切换印地语失效

Hey there! Let's walk through why your Hindi language switch isn't working and how to fix both the button-triggered switch and XML string localization.

1. First, Double-Check Your Hindi Resource Setup #

The most common issue here is missing or incorrectly named resource files. Make sure you have:

• A values-hi folder inside your res/ directory
• A strings.xml file inside values-hi with all your translated Hindi strings. Example:

<!-- res/values-hi/strings.xml -->
<resources>
    <string name="app_name">मेरा ऐप</string>
    <string name="switch_hindi">हिंदी में बदलें</string>
    <!-- Add translations for every string you use in your app -->
</resources>

2. Implement the Correct Locale Switch Logic #

If your current code isn't switching locales properly, try this robust method. It updates the app configuration and ensures the changes take effect immediately:

Kotlin Example: #

// Add this method to your Activity or a dedicated LocaleHelper class
fun switchToHindi() {
    val hindiLocale = Locale("hi")
    Locale.setDefault(hindiLocale)

    val config = resources.configuration.apply {
        setLocale(hindiLocale)
        setLayoutDirection(hindiLocale) // Important for right-to-left formatting if needed
    }

    // Update the app's resources with the new locale
    resources.updateConfiguration(config, resources.displayMetrics)

    // Recreate the activity to apply all UI changes
    recreate()
}

// Attach this to your button click listener
binding.btnSwitchHindi.setOnClickListener {
    switchToHindi()
}

For Android API 24+ (Alternative Approach): #

If targeting newer versions, use createConfigurationContext to avoid configuration leaks:

fun switchToHindi() {
    val hindiLocale = Locale("hi")
    val config = resources.configuration.apply {
        setLocale(hindiLocale)
    }
    val context = createConfigurationContext(config)
    resources.updateConfiguration(config, resources.displayMetrics)
    // Recreate activity to apply changes
    recreate()
}

3. Handling XML String Localization #

How you handle XML strings depends on where they're stored:

Case 1: XML is a String Resource #

If your XML content is stored as a string in strings.xml, just fetch it after switching locales—Android will automatically pull the Hindi version from values-hi/strings.xml:

// After switching locale, get the localized XML string
val localizedXmlContent = getString(R.string.your_xml_string_key)
// Parse or display this XML as needed

Case 2: XML is a Raw Resource #

If your XML is in the raw/ folder, create a raw-hi folder and place the Hindi version of the XML there. Then load it using:

val inputStream = resources.openRawResource(R.raw.your_xml_file)
// Use an XML parser (like XmlPullParser) to process the input stream

Case 3: Dynamic XML Content #

If generating XML on the fly, insert localized strings using getString(R.string.your_key) after the locale switch to ensure Hindi text is used.

Troubleshooting Quick Checks #

• Verify Locale: Add a log to confirm the locale changed: Log.d("LocaleCheck", Locale.getDefault().language) should print hi after switching.
• Missing Translations: Any strings not present in values-hi/strings.xml will fall back to the default language—double-check your translations.
• Manifest Declaration: For API 33+, declare supported locales in your manifest to ensure the system recognizes Hindi:

<!-- AndroidManifest.xml -->
<application
    ...
    android:localeConfig="@xml/locales_config">
</application>

<!-- res/xml/locales_config.xml -->
<locale-config xmlns:android="http://schemas.android.com/apk/res/android">
    <locale android:name="en"/>
    <locale android:name="hi"/>
</locale-config>

Give these steps a try—they should resolve both the button switch issue and XML string localization!

内容的提问来源于stack exchange，提问作者Manik