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HashTable과 ConcurrentHashMap 차이

둘다 thread safe

HashTable - 블락킹하여 동작하여 성능 감소

ConcurrentHashMap - 멀티 쓰레드로 블락킹없이 동작

각 쓰레드에서 map의 최신 데이터 표시가 필요하고, 데이터 일관성 보증이 필요하다면 HashTable

성능이 민감하고 각 쓰레드는 map에 쓰기만하고 읽기가 자주 발생하지 않는다면 ConcurrentHashMap

http://stackoverflow.com/a/510654/723405

#android #hashtable #cuncurrenthashmap #blocking

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안드로이드 4.4에서 fullscreen일 때 다이얼로그창 상단 잘려보일때

dialog.getWindow().setFlags( WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

http://stackoverflow.com/questions/20121711/dialog-on-android-kitkat-seems-to-be-cut/20281449#20281449

#android 4.4 #kitkat #dialog #status bar #cut #fullscreen

안드로이드 4.4 킷캣 스크린 레코딩

adb shell screenrecord /sdcard/filename.mp4

http://www.androidbeat.com/2013/11/use-screen-recording-feature-android-4-4-kitkat/

#android #screen recording #kitkat

ListView padding이 스크롤에 적용안되게

<ListView ... android:scrollbarStyle="outsideOverlay" http://stackoverflow.com/a/7790482/723405

#android #listview #padding #scroll

Dialog 타이틀 없애기

dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);

#android #dialog #title

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Dialog 프레임 없애기

dialog.getWindow().setBackgroundDrawable(new ColorDrawable());

http://stackoverflow.com/a/14152900/723405

#android #dialog #frame

ActionBarActivity에서 액션바 버튼 안나올때

<menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:[yourapp]="http://schemas.android.com/apk/res-auto"> <item android:id="@+id/menu_add_size" android:title="@string/menu_add_item" android:orderInCategory="10" [yourapp]:showAsAction="always" android:icon="@android:drawable/ic_menu_add" /> </menu> http://stackoverflow.com/a/17914095/723405

#android #actionbar #showasaction #menuitem #support v7

Dialog? DialogFragment?

간단히 확인창 정도는 Dialog

홈 갔다가 다시 실행했을 때 창이 다시 그대로 뜨는 onResume과 같은 Fragment 상태가 필요하다면 DialogFragment 쓰면 될듯

#android #dialog #dialogfragment

ActionBar 투명하게 하고 영역 모두 사용

http://stackoverflow.com/questions/13726214/transparent-actionbar-custom-tabcolor

getWindow().requestFeature(Window.FEATURE_ACTION_BAR_OVERLAY);

ActionBar actionBar = getSupportActionBar();

actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#330000ff")));

actionBar.setStackedBackgroundDrawable(new ColorDrawable(Color.parseColor("#550000ff")));

#android #actionbar

드랍박스를 git 원격 저장소로 사용하기

$ git init --bare dropbox/repos/your-repo-name $ git remote add dropbox dropbox/repos/your-repo-name/ $ git push dropbox master

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