#actionbar

original source : https://youtu.be/qRAMJeH0yzY

action bar는 상단에 나타나며 기본적으로 toolbar의 한 형태이다

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HomeAsUp 버튼을 클릭한 경우 android.R.id.home에 해당한다.

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theme에 정의되어 있는 action bar style이나 속성값들을 수정 함으로써 그 모양을 변경할수 있다. style , 속성값 종류로는 actionBarStyle, windowActionBarOverlay, actionBarSize, actionButtonStyle등이 있다.

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fragment back stack을 이용한 back navigation

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intent flag를 이용한 up navigation

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original source : https://stackoverflow.com/questions/26588917/appcompat-v7-toolbar-onoptionsitemselected-not-called

AppCompat v7에 drawer를 사용하는 경우 toggle버튼과 action bar의 home버튼과 겹쳐지면서 제대로 작동하지 않는 문제에 대한 해결방법

answer #1

I had to implement an OnClickListener for the DrawerToggle:

mDrawerToggle.setToolbarNavigationClickListener(new View.OnClickListener() {    @Override    public void onClick(View v) {        popStackIfNeeded();        mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);        mActionBar.setDisplayHomeAsUpEnabled(false);        mDrawerToggle.setDrawerIndicatorEnabled(true);    } });

this fixed my issue

answer #2 

I know this question has been answered but I found the real cause of the problem after 2 days of frustration.

Take a look at the ActionBarDrawerToggle documentation:https://developer.android.com/reference/android/support/v7/app/ActionBarDrawerToggle.html

Notice the two constructors there. My mistake was that I was using the second constructor that was taking a toolbar as a parameter. It took me so long to notice the last line in the consturctor documentation: "Please use ActionBarDrawerToggle(Activity, DrawerLayout, int, int) if you are setting the Toolbar as the ActionBar of your activity."

After using the first constructor onOptionsItemSelected() was called with no issues.

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