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[DataBinding] String Format Àû¿ëÇϱâ
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¿äÁîÀ½ DataBindingÀ» ÀÌ¿ëÇϸ鼭 Âü Æí¸®ÇÏ°Ô ÄÚµùÀ» ÇÏ°í ÀÖ½À´Ï´Ù. (±â´É Á¶»ç°¡ ½Ã°£ÀÌ Á» °É·ÈÁö¸¸^^a)

xml ¿¡ Data¸¦ ¹ÙÀεù ÇÏ´Â Áß text¿¡ String formatÀº ¾î¶»°Ô Àû¿ëÇÏÁö??
±Ã±ÝÁõÀÌ »ý°å¾ú½À´Ï´Ù. ´äÀº ±¸±Û¿¡¼­ ÀÌ¹Ì ³Ö¾î³õ¾Ò´õ±º¿ä.

String Literals
When using single quotes around the attribute value, it is easy to use double quotes in the expression:
android:text='@{map["firstName"]}'
It is also possible to use double quotes to surround the attribute value. When doing so, String literals should either use the " or back quote (`).
android:text="@{map[`firstName`}"
android:text="@{map["firstName"]}"
Resources
It is possible to access resources as part of expressions using the normal syntax:
android:padding="@{large? @dimen/largePadding : @dimen/smallPadding}"
Format strings and plurals may be evaluated by providing parameters:
android:text="@{@string/nameFormat(firstName, lastName)}"
android:text="@{@plurals/banana(bananaCount)}"
When a plural takes multiple parameters, all parameters should be passed:

  Have an orange
  Have %d oranges

android:text="@{@plurals/orange(orangeCount, orangeCount)}"
https://developer.android.com/topic/libraries/data-binding/index.html

À§¿Í °°ÀÌ String °ªÀ» Á¦¾î ÇÒ ¼ö Àִµ¥¿ä.

android:text="@{@string/nameFormat(firstName, lastName)}"
String formatÀº À§ ¼³¸íÀÌ ³¡ÀÔ´Ï´Ù.
nameFormat À̶ó´Â String format °ªÀ» strings.xml¿¡ Á¤ÀÇÇØ ÁÖ¼¼¿ä.

<string formatted="false" name="nameFormat">À̸§Àº %s ÀÌ°í, ¼ºÀº %s ÀÔ´Ï´Ù.</string>
±×·± ´ÙÀ½ firstName°ú lastName °ªÀ» ³Ö¾î ÁÖ¸é ³¡ÀÔ´Ï´Ù.
firstName°ú lastNameÀº µ¥ÀÌÅÍ·Î ºÒ·¯¿Â °ªÀ» ³ÖÀ¸¸é µË´Ï´Ù.
¾Æ·¡¸¦ Âü°í Çϼ¼¿ä.

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">
   <data>
       <variable name="handlers" type="com.example.Handlers"/>
       <variable name="user" type="com.example.User"/>
   </data>
   <LinearLayout
       android:orientation="vertical"
       android:layout_width="match_parent"
       android:layout_height="match_parent">
       <TextView android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="@{user.firstName}"
           android:onClick="@{handlers::onClickFriend}"/>
   </LinearLayout>
</layout>

## Áß¿äÇÑ ºÎºÐÀº µ¥ÀÌÅ͸¦ xml¿¡¼­ °è»ê Çϰųª ¹Ù²Ü·Á°í ÇÏÁö ¸¶¼¼¿ä.
    xml¿¡¼­´Â ÀνÄÀ» ¸øÇÏ°Ô µË´Ï´Ù. (xmlÇü½ÄÀÌ ÀÖÀ¸´Ï±ñ¿ä. °ÅÀÇ ¹Ý³ªÀý »ðÁú Ç߳׿ä..¤Ð¤Ð)

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