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https://github.com/mihonapp/mihon.git
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86 lines
2.6 KiB
Kotlin
86 lines
2.6 KiB
Kotlin
package eu.kanade.tachiyomi.util
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import android.app.Application
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import android.content.res.Configuration
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import android.os.Build
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import android.view.ContextThemeWrapper
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import eu.kanade.tachiyomi.data.preference.PreferencesHelper
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import uy.kohesive.injekt.injectLazy
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import java.util.*
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/**
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* Utility class to change the application's language in runtime.
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*/
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@Suppress("DEPRECATION")
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object LocaleHelper {
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/**
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* Preferences helper.
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*/
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private val preferences: PreferencesHelper by injectLazy()
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/**
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* In API 16 and below the application's configuration has to be changed, so we need a copy of
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* the initial locale. The only problem is that if the system locale changes while the app is
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* running, it won't change until an application restart.
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*/
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private var v16SystemLocale = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1)
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preferences.context.resources.configuration.locale else null
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/**
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* The application's locale. When it's null, the system locale is used.
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*/
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private var appLocale = getLocaleFromCode(preferences.lang())
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/**
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* Returns the locale for the value stored in preferences, or null if system language or unknown
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* value is selected.
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*
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* @param pref the int value stored in preferences.
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*/
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private fun getLocaleFromCode(pref: Int): Locale? {
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val code = when(pref) {
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1 -> "en"
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2 -> "es"
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3 -> "it"
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4 -> "pt"
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else -> return null
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}
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return Locale(code)
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}
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/**
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* Changes the application's locale with a new preference.
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*
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* @param pref the new value stored in preferences.
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*/
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fun changeLocale(pref: Int) {
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appLocale = getLocaleFromCode(pref)
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}
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/**
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* Updates the app's language from API 17.
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*/
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fun updateCfg(wrapper: ContextThemeWrapper) {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1 && appLocale != null) {
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val config = Configuration(preferences.context.resources.configuration)
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config.setLocale(appLocale)
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wrapper.applyOverrideConfiguration(config)
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}
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}
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/**
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* Updates the app's language for API 16 and lower.
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*/
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fun updateCfg(app: Application, config: Configuration) {
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
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val configCopy = Configuration(config)
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val displayMetrics = app.baseContext.resources.displayMetrics
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configCopy.locale = appLocale ?: v16SystemLocale
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app.baseContext.resources.updateConfiguration(configCopy, displayMetrics)
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}
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}
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}
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