android-fragments

问题 I have 3 Fragment (Fragment Home, Fragment A, Fragment B and Fragment C). First time app run will display Fragment Home (Set in Mainactivity). From Navigation Draw Item can choose every fragment. Every selected item will display detail Fragment. I have problems to handle data and retain fragment : (1). When I select a fragment (for example Fragment A) will show the page of Fragment A. But when I rotate the device, why my fragment back to Fragment Home and not stay at current Fragment ??How to

问题 I have 3 Fragment (Fragment Home, Fragment A, Fragment B and Fragment C). First time app run will display Fragment Home (Set in Mainactivity). From Navigation Draw Item can choose every fragment. Every selected item will display detail Fragment. I have problems to handle data and retain fragment : (1). When I select a fragment (for example Fragment A) will show the page of Fragment A. But when I rotate the device, why my fragment back to Fragment Home and not stay at current Fragment ??How to

问题 In my StartActivity the BottomNavigationBar Listener has the following setup: private GuideFragment guideFragment = new GuideFragment(); private MapFragment mapFragment = new MapFragment(); private MoreFragment moreFragment = new MoreFragment(); private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener = new BottomNavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem item) { Fragment

问题 I have created a custom bottom sheet android dialogue with the help of this answer by Chintan Khetiya:How to create a Custom Dialog box in android?. I want to dismiss the dialogue from the button defined in the BottomDialogue's own Activity.Not from Calling activity. Here is my code in the Calling activity in which i have created my custom BottomSheet_liab instance by click of a button: openBottomDialogeButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View

问题 I have created a custom bottom sheet android dialogue with the help of this answer by Chintan Khetiya:How to create a Custom Dialog box in android?. I want to dismiss the dialogue from the button defined in the BottomDialogue's own Activity.Not from Calling activity. Here is my code in the Calling activity in which i have created my custom BottomSheet_liab instance by click of a button: openBottomDialogeButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View

问题 In android programming, When we add fragment to specific layout, we can use folloing codes Fragment fragment = new SampleFragment(); FragmentManager fragmentManager = getSupportFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.replace(R.id.content_layout, fragment); fragmentTransaction.commit(); or Fragment fragment = SampleFragment.getInstance(); FragmentManager fragmentManager = getSupportFragmentManager();

问题 I have a method, which perform a fragment adding animation and a new fragment fills all screen: public void addFragmentWithAnimation(Fragment fragment, boolean addToBackStack){ FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); transaction.setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_right, R.anim.slide_in_left, R.anim.slide_out_right); if (addToBackStack) { transaction.addToBackStack(null); } transaction.add(R.id.lay_fragments, fragment);

问题 I had a problem setting up some fragment menu items in the ActionBar and I found a way to solve it, but I don't understand why it worked. I wanted to change the visibility in a menu item right after I inflated it from a menu xml file in onCreateOptionsMenu method. The code seems to work fine, but there's no visible effect. I solved the problem inflating the menu in onCreateOptionsMenu method but changing the visibility of it in onPrepareOptionsMenu method. What I want to know is why changing

问题 What I have done: I have created Navigation Drawer Activity , As updated new format of Navigation Drawer Activity , As per new Android architecture, I got it with Navigation Component structure. The NavigationView code with NavController and NavigationUI as below which is opening fragment when I click on any navigation item. DrawerLayout drawer = findViewById(R.id.drawer_layout); NavigationView navigationView = findViewById(R.id.nav_view); // Passing each menu ID as a set of Ids because each

问题 This question already has answers here : requestFeature() must be called before adding content (8 answers) Closed 6 years ago . I have dialog fragment. I have intention to use this fragment in activity and dialog. And I override onCreateDialog and onCreateView method. here is coding. @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.interval_time_popup, null); setup(view, false); return view; }