코드상으로 데이터베이스를 여는 코드를 넣으면 발생하는데요, 예전에 이와 비슷한 오류가 발생했었는데, 데이터베이스 버전을 22이하로 낮추어 주면 해결이 됬었는데, 그래도 해결이 잘 안되네요;;
데이터베이스를 열때 발생하는 에러 같은데.. 도무지 무슨 에러인지 잘 모르겠습니다..
조언부탁드립니다..!

03-23 08:33:43.359: ERROR/AndroidRuntime(1176): Uncaught handler: thread main exiting due to uncaught exception
03-23 08:33:43.390: ERROR/AndroidRuntime(1176): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bigyuo/com.bigyuo.Menu2Activity}: android.database.sqlite.SQLiteException: table gift already exists: create table gift (_id integer primary key autoincrement,gift_type text not null, gift_date text not null, gift_grade text not null, gift_name text not null);
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2454)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2470)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.app.ActivityThread.access$2200(ActivityThread.java:119)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.os.Looper.loop(Looper.java:123)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.app.ActivityThread.main(ActivityThread.java:4310)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at java.lang.reflect.Method.invokeNative(Native Method)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at java.lang.reflect.Method.invoke(Method.java:521)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at dalvik.system.NativeStart.main(Native Method)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176): Caused by: android.database.sqlite.SQLiteException: table gift already exists: create table gift (_id integer primary key autoincrement,gift_type text not null, gift_date text not null, gift_grade text not null, gift_name text not null);
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.database.sqlite.SQLiteDatabase.native_execSQL(Native Method)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1609)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at com.bigyuo.DbAdapter$DatabaseHelper.onCreate(DbAdapter.java:64)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at com.bigyuo.DbAdapter$DatabaseHelper.onUpgrade(DbAdapter.java:74)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:108)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at com.bigyuo.DbAdapter.open(DbAdapter.java:99)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at com.bigyuo.Menu2Activity.onCreate(Menu2Activity.java:34)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-23 08:33:43.390: ERROR/AndroidRuntime(1176):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)