[英]Custom Menu change option menu in different fragments?
帶有自定義菜單的片段:我可以片段更改菜單更改方式嗎?片段B與上面相同,但具有不同的膨脹XML
菜單菜單工作ImageView
menuView
onClick
和片段更改更改菜單列表名稱
public class BizForumFragment extends Fragment implements View.OnClickListener{
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
private String mParam1;
private String mParam2;
ImageView menuView;
Context context;
RequestParse requestParse;
PagerAdapter adapter;
ViewPager viewPager;
public BizForumFragment() {
}
public static BizForumFragment newInstance(String param1, String param2) {
BizForumFragment fragment = new BizForumFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
context = this.getContext();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.fragment_biz_forum, container, false);
viewPager = (ViewPager) view.findViewById(R.id.viewpager);
adapter = new PagerAdapter(getChildFragmentManager(), getContext());
viewPager.setAdapter(adapter);
menuView = (ImageView) view.findViewById(R.id.menuView);
menuView.setOnClickListener(this);
final TabLayout tabLayout = (TabLayout) view.findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
for (int i = 0; i < tabLayout.getTabCount(); i++) {
TabLayout.Tab tab = tabLayout.getTabAt(i);
tab.setCustomView(adapter.getTabView(i));
}
return view;
}
@Override
public void onClick(View v) {
PopupMenu popup = new PopupMenu(getContext(), menuView);
popup.getMenuInflater().inflate(R.menu.article_menu, popup.getMenu());
popup.show();
}
class PagerAdapter extends FragmentStatePagerAdapter {
String tabTitles[] = getResources().getStringArray(R.array.myLinks);
Context context;
public PagerAdapter(FragmentManager fm, Context context) {
super(fm);
this.context = context;
}
@Override
public int getCount() {
return tabTitles.length;
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new ArticlesFragment();
case 1:
return new DiscussionFragment();
case 2:
return new NewsFragment();
}
return null;
}
@Override
public CharSequence getPageTitle(int position) {
// Generate title based on item position
return tabTitles[position];
}
public View getTabView(int position) {
View tab = LayoutInflater.from(getContext()).inflate(R.layout.tab_text_layout, null);
TextView tv = (TextView) tab.findViewById(R.id.custom_text);
tv.setText(tabTitles[position]);
return tab;
}
}
}
以前,我有一個類似的問題。 我在片段類中宣布了updateToolbar()
方法,並在ViewPager.OnPageChangeListener
為所選片段調用了它。 在方法updateToolbar()
我調用了以下代碼:
getActivity().supportInvalidateOptionsMenu();
之后,菜單資源重新膨脹。 你可以在這里找到我的例子
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