android-fragmentactivity

问题 This question already has answers here : findViewById in Fragment (35 answers) Closed 8 months ago . I have an activity, let's call it A , and it launches a fragment like so: remoteFragment = new RemoteFragment(); getSupportFragmentManager() .beginTransaction() .replace(R.id.frameLayout_remote_activity, remoteFragment) .commit(); my remoteFragment looks something like this: public Button okBtn; public RemoteFragment() { // Required empty public constructor } @Override public View onCreateView

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 This one is driving me nuts. Basically, I want to create a ViewPager and add a few Fragment s to it. Then, all I want to do, it set a value in one of the Fragment 's TextView s. I can add the Fragment s fine, and they attach, but when I go to findViewById() for one of the TextView s in the first Fragment it throws a NullPointerException . I, for the life of me, can't figure out why. Here's my code so far, let me know if more is needed please. public class SheetActivity extends

问题 I followed the official documentation: https://developer.android.com/guide/components/fragments#Creating. It provides the steps to set up a fragment. First, create the fragment class (`extends Fragment') Then create its layout (and, in fragment class' OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) , return one of the View' of this layout using inflate`) Choose an activity that will use this fragment. This activity must extends FragmentActivity and in

来源： https://stackoverflow.com/questions/64655328/how-can-refresh-the-fragment-when-i-finish-the-activity

来源： https://stackoverflow.com/questions/64655328/how-can-refresh-the-fragment-when-i-finish-the-activity

来源： https://stackoverflow.com/questions/63368961/no-adapter-attached-skipping-layout-issue-in-recycler-vierw-after-fragment-resu

来源： https://stackoverflow.com/questions/63368961/no-adapter-attached-skipping-layout-issue-in-recycler-vierw-after-fragment-resu

问题 I've the following class in my fragment activity now i want to get name of tabs from strings.xml but i can't able to use method getString(int resId) it gives a error message "Cannot make a static reference to the non-static method getString(int) from the type Context". In method public CharSequence getPageTitle(int position) I need to get like this name = getString(R.string.mystring) any help is appreciated. public static class AppSectionsPagerAdapter extends FragmentPagerAdapter { public