我想将按钮单击事件从片段传递到其容器活动，我正在使用Android Jetpack导航。当要在片段中按下按钮时，我想显示Container活动的底部。
这是容器活动-
public class MainScreenActivity extends AppCompatActivity {
private CardView mButtomSheet;
private BottomSheetBehavior bottomSheetBehavior;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_screen);
BottomNavigationView navView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
// NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
// To hide Appp Bar
NavigationUI.setupWithNavController(navView, navController);
mButtomSheet = findViewById(R.id.mybuttom_sheet);
bottomSheetBehavior = BottomSheetBehavior.from(mButtomSheet);
}
}
按钮所在的我的片段代码-
public class HomeFragment extends Fragment {
private HomeViewModel homeViewModel;
private EditText searchInput;
private RecyclerView booksRv;
private BooksAdapter adapter;
private ImageView loadingImg;
private Button btnShowDetails;
public static final String TAG = "HomeFragment";
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_home, container, false);
searchInput = root.findViewById(R.id.search_input);
booksRv = root.findViewById(R.id.books_rv);
loadingImg = root.findViewById(R.id.loading_image);
btnShowDetails = root.findViewById(R.id.show_details);
return root;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
//view model
homeViewModel = ViewModelProviders.of(this).get(HomeViewModel.class);
btnShowDetails.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Need to call some event in Container activity
}
});
}
}