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Android SharedPreferences »ç¿ë ¿¹Á¦
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¾Èµå·ÎÀ̵å ÇÁ·ÎÁ§Æ®¸¦ ÁøÇàÇϸ鼭, ¾ÆÀ̵𳪠String ¹®ÀÚ¿­µî ÀúÀåÇØ¾ß ÇÒ °æ¿ì°¡ »ý±é´Ï´Ù. º¸ÅëÀÇ °æ¿ì Data¸¦ ÀúÀåÇÒ °æ¿ì DB¸¦ ½á¾ßÇϴµ¥ DB¸¦ ¾²±â¿¡´Â ³Ê¹« °£´ÜÇϰųª ¾Ö¸ÅÇÑ »óȲÀÌ »ý±â±âµµ ÇÕ´Ï´Ù. ±×·²°æ¿ì¿¡ ¾Èµå·ÎÀ̵忡¼­ Á¦°øÇÏ´Â SharedPreferences ¸¦ »ç¿ëÇϽñ⠹ٶø´Ï´Ù.



SharedPreferences´Â ÇØ´ç ÇÁ·Î¼¼½º(¾îÇø®ÄÉÀ̼Ç)³»¿¡ File ÇüÅ·ΠData¸¦ ÀúÀåÇØ ÁÝ´Ï´Ù. ±×¸®°í ÇØ´ç ¾îÇø®ÄÉÀ̼ÇÀÌ »èÁ¦µÇ±â Àü±îÁö Data¸¦ º¸°üÇØ ÁÖ´Â ±â´ÉÀ» ÇÕ´Ï´Ù. (SharedPreferences »ç¿ëÇÑ ¾îÇø®ÄÉÀ̼ÇÀ» Áö¿ì¸é ³»¿ëÀÌ ¸ðµÎ »èÁ¦ µË´Ï´Ù. FileÀÌ »èÁ¦µÇ´Â °ÍÀÌÁö¿ä.)



ÀÚ ±×·³ »ç¿ë ¹æ¹ý¿¡ ´ëÇØ ¾Ë¾Æ º¸°Ú½À´Ï´Ù.

package arabiannight.tistory.com.sharedpreferences;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;

public class TestSharedPreferencesActivity extends Activity {
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
    }
    
    // °ª ºÒ·¯¿À±â
    private void getPreferences(){
        SharedPreferences pref = getSharedPreferences("pref", MODE_PRIVATE);
        pref.getString("hi", "");
    }
    
    // °ª ÀúÀåÇϱâ
    private void savePreferences(){
        SharedPreferences pref = getSharedPreferences("pref", MODE_PRIVATE);
        SharedPreferences.Editor editor = pref.edit();
        editor.putString("hi", "ÀλçÀßÇϳ×");
        editor.commit();
    }
    
    // °ª(Key Data) »èÁ¦Çϱâ
    private void removePreferences(){
        SharedPreferences pref = getSharedPreferences("pref", MODE_PRIVATE);
        SharedPreferences.Editor editor = pref.edit();
        editor.remove("hi");
        editor.commit();
    }
    
    // °ª(ALL Data) »èÁ¦Çϱâ
    private void removeAllPreferences(){
        SharedPreferences pref = getSharedPreferences("pref", MODE_PRIVATE);
        SharedPreferences.Editor editor = pref.edit();
        editor.clear();
        editor.commit();
    }
}

SharedPreferences pref = getSharedPreferences("pref", MODE_PRIVATE);




getSharedPreferences("pref", MODE_PRIVATE) ¿¡¼­ "pref" ´Â File À̸§À̶ó°í »ý°¢ÇÏ½Ã¸é µË´Ï´Ù. ÇϳªÀÇ Æú´õ¿¡ ¿©·¯°³ÀÇ FileÀÌ Á¸Àç ÇÒ ¼ö ÀÖµíÀÌ ÇϳªÀÇ ¾îÇø®ÄÉÀ̼ǿ¡¼­µµ ¿©·¯°³ÀÇ SharedPreferences(File) °¡ Á¸Àç ÇÒ ¼ö ÀÖ½À´Ï´Ù. ±×·¯¹Ç·Î "pref"´Â SharedPreferences À̸§À̶ó°í º¸½Ã¸é µË´Ï´Ù. °ªÀ» ÀúÀåÇÏ°í ºÒ·¯¿Ã¶§ SharedPreferences À̸§ÀÌ Æ²¸®Áö ¾Ê°Ô ÁÖÀÇÇÏ½Ã¸é µË´Ï´Ù.



»ç¿ëÇϽǶ§´Â SharedPreferences ´Â (Key, Value) ÇüÅ·Π»ç¿ëÇÏ½Ã¸é µË´Ï´Ù. ºÒ·¯¿À½Ç¶§ getString(key, value)¸¦ ¼³Á¤ÇÏÁö¸¸ ÇØ´ç key¿¡ ´ëÇÑ °ªÀÌ ¾øÀ»°æ¿ì ÀÔ·ÂÇÑ Value°¡ Default °ªÀ¸·Î ¼³Á¤µË´Ï´Ù. Áï À§¿¡ º¸½Ã´Â°Í°ú °°ÀÌ key°ªÀÌ ¾øÀ»°æ¿ì "" °ø¹éÀ» ¸®ÅÏ¹Þ°Ô µË´Ï´Ù.



¶ÇÇÑ ÁÖÀÇÇÏ½Ç°Ô get ¸Þ¼­µå¸¦ Á¦¿ÜÇÑ Data ÀúÀå(put), »èÁ¦(remove, clear) µîÀ» ÇÒ °æ¿ì¿¡´Â commit()À» ²À È£ÃâÇØ ÁÖ¾î¾ß ÇÕ´Ï´Ù.


ÁÖÀÇ : [ȯ°æ¼³Á¤] -> [SD Ä«µå µ¥ÀÌÅÍ ] -> [µ¥ÀÌÅÍ »èÁ¦] ½Ã SharedPreferences¿¡ ÀúÀåµÇ ÀÖ´Â °ªµéÀº ¸ðµÎ »ç¶óÁö°Ô µË´Ï´Ù. ÆÄÀϸ¸ ³²°í ¾È¿¡ ÀúÀåµÇ ÀÖ´ø Á¤º¸µéÀº ³¯¾Æ°¡´Ï ÀÌ Á¡ À¯ÀÇ ÇϽñ⠹ٶø´Ï´Ù.

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http://arabiannight.tistory.com/attachment/cfile26.uf@1534844E4FFD0CDD059F93.zip
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