2
지원 라이브러리 V7에서 ActionBarActivity를 사용하고 있습니다. 그러나 메뉴 xml에서 android : showAsAction = "always"를 지정하면 아무 효과가 없습니다. Java 코드에서 onCreateOptionsMenu() 메서드를 사용하여 항목을 찾고 속성을 수동으로 설정해야합니다. 내 코드에 문제가 있습니까? 왜 이런 일이 생길까요?android : showAsAction = "탭 조각에 대해 항상"작동하지 않습니다.
menu1.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/menu_item1"
android:icon="@android:drawable/ic_menu_view"
android:title="menu1"
android:showAsAction="always"/>
</menu>
그리고 메뉴 2 : 여기
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.setDisplayShowTitleEnabled(false);
Tab tab = actionBar
.newTab()
.setText("ArtistFragment")
.setIcon(android.R.drawable.ic_input_add)
.setTabListener(
new TabListener<ArtistFragment>(this, "ArtistFragment", ArtistFragment.class));
actionBar.addTab(tab);
tab = actionBar
.newTab()
.setText("AlbumFragment")
.setIcon(android.R.drawable.btn_radio)
.setTabListener(
new TabListener<AlbumFragment>(this, "AlbumFragment", AlbumFragment.class));
actionBar.addTab(tab);
}
public static class TabListener<T extends Fragment> implements ActionBar.TabListener {
private Fragment mFragment;
private final Activity mActivity;
private final String mTag;
private final Class<T> mClass;
/** Constructor used each time a new tab is created.
* @param activity The host Activity, used to instantiate the fragment
* @param tag The identifier tag for the fragment
* @param clz The fragment's Class, used to instantiate the fragment
*/
public TabListener(Activity activity, String tag, Class<T> clz) {
mActivity = activity;
mTag = tag;
mClass = clz;
}
/* The following are each of the ActionBar.TabListener callbacks */
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// Check if the fragment is already initialized
if (mFragment == null) {
// If not, instantiate and add it to the activity
mFragment = Fragment.instantiate(mActivity, mClass.getName());
mFragment.setHasOptionsMenu(true); //MUST manually set here
ft.add(android.R.id.content, mFragment, mTag);
} else {
// If it exists, simply attach it in order to show it
ft.attach(mFragment);
}
}
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
if (mFragment != null) {
// Detach the fragment, because another one is being attached
ft.detach(mFragment);
}
}
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// User selected the already selected tab. Usually do nothing.
}
}
public static class ArtistFragment extends Fragment {
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.menu1, menu);
// Manually set will take effect
menu.findItem(R.id.menu_item1)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
}
}
public static class AlbumFragment extends Fragment {
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.menu2, menu);
// XML set android:showAsAction="always" does not work
}
}
}
그리고 두 개의 메뉴 XML 파일 : 여기
는 document sample에서 가장, 내 활동 코드 .xml<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+id/menu_item2"
android:icon="@android:drawable/ic_menu_view"
android:title="menu2"
android:showAsAction="always"/>
</menu>