Android多语言切换

第一步：创建多语言资源文件步骤

image.png

---

image.png

第二步：Application设置加载语言（适配7.0及以下）

class MyApplication : Application() {

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

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

    /**
     * 设置加载语言
     */
    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设置加载语言（适配8.0及以上）

open class BaseActivity : FragmentActivity() {

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

    /**
     * 设置加载语言
     */
    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：切换语言

val config: Configuration = resources.configuration
val dm = resources.displayMetrics
when(chooseType){
    1 ->{//中文简体
           config.locale = Locale.SIMPLIFIED_CHINESE
     }
     2 ->{//english
            config.locale = Locale.ENGLISH
      }
 }
resources.updateConfiguration(config, dm)
SPUtils.spUtils.put(this,MyParms.LANGUAGE,config.locale.getLanguage())
//这边不知道怎么回事儿，必须要阻塞几百毫秒才能切换成功
Thread.sleep(500)
//切换成功后必须要重启app，才能生效
restartApp(this, xxx::class.java)

---

image.png

WebView(this).destroy()

重启app代码

/**
  * 重启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)
 }