第一步：創(chuàng)建多語言資源文件步驟

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第二步：Application設(shè)置加載語言（適配7.0及以下）

class MyApplication : Application() {

    override fun onCreate() {
        super.onCreate()
        
        //7.0以下加載此方法
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
            setLanguage()
        }
    }

    override fun onConfigurationChanged(newConfig: Configuration) {
        super.onConfigurationChanged(newConfig)
       //7.0以下加載此方法
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
            setLanguage()
        }
    }

    /**
     * 設(shè)置加載語言
     */
    private fun setLanguage() {
        val localconfig = SPUtils.spUtils.get(applicationContext, MyParms.LANGUAGE,"") as String
        val config = resources.getConfiguration()
        val metrics = resources.getDisplayMetrics()
        var mlocale: Locale? = null
        if (null != localconfig && !"".equals(localconfig)) {
            mlocale = Locale(localconfig);
        } else {
            mlocale = Locale.getDefault();
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            config.setLocale(mlocale)
        }else{
            config.locale = mlocale
        }
        resources.updateConfiguration(config, metrics)
    }

}

第三步：activity設(shè)置加載語言（適配8.0及以上）

open class BaseActivity : FragmentActivity() {

    override fun attachBaseContext(newBase: Context?) {
        super.attachBaseContext(newBase)
        setLanguage()
    }

    /**
     * 設(shè)置加載語言
     */
    private fun setLanguage() {
        val localconfig = SPUtils.spUtils.get(applicationContext, MyParms.LANGUAGE,"") as String
        val config = resources.getConfiguration()
        val metrics = resources.getDisplayMetrics()
        var mlocale: Locale? = null
        if (null != localconfig && !"".equals(localconfig)) {
            mlocale = Locale(localconfig);
        } else {
            mlocale = Locale.getDefault();
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            config.setLocale(mlocale)
        }else{
            config.locale = mlocale
        }
        resources.updateConfiguration(config, metrics)
    }

}

第四步：切換語言

val config: Configuration = resources.configuration
val dm = resources.displayMetrics
when(chooseType){
    1 ->{//中文簡體
           config.locale = Locale.SIMPLIFIED_CHINESE
     }
     2 ->{//english
            config.locale = Locale.ENGLISH
      }
 }
resources.updateConfiguration(config, dm)
SPUtils.spUtils.put(this,MyParms.LANGUAGE,config.locale.getLanguage())
//這邊不知道怎么回事兒，必須要阻塞幾百毫秒才能切換成功
Thread.sleep(500)
//切換成功后必須要重啟app嘁灯，才能生效
restartApp(this, xxx::class.java)

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WebView(this).destroy()

重啟app代碼

/**
  * 重啟app
  */
 fun restartApp(activity: Activity, homeClass: Class<*>?) {
       val intent = Intent(activity, homeClass)
       intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
       startActivity(intent)
       Process.killProcess(Process.myPid())
       System.exit(0)
 }