android-fragments

问题 I have setup a Observable/Subscriber with RxJava. The Observable is created in MainActivity. The Subscriber is a android.support.v4.app.Fragment called MyFragment. The Observable gets data from RESTful service and stores the data in a SQLite db on the device. This works. When its work is done, which takes 4 or 5 seconds such that MyFragment has already processed onCreate() , onCreateView() etc., the subscriber, MyFragment, is notified via its implemented onNext() method (this works) and is

问题 I have a view pager in the MainActivity , this view pager contains two tabs RecentFeed and SavedFeed both uses the same FeedFragment as both has same layout Now I want to update the contents of these fragments when a new gcm message is recieved or there occurs a change in my database here is what have done so far : I created a changelistening interface as follows- public interface OnDatabaseChangeListener { void onChange(); } Then used this in helper class to notify changes as follows private

问题 I have a view pager in the MainActivity , this view pager contains two tabs RecentFeed and SavedFeed both uses the same FeedFragment as both has same layout Now I want to update the contents of these fragments when a new gcm message is recieved or there occurs a change in my database here is what have done so far : I created a changelistening interface as follows- public interface OnDatabaseChangeListener { void onChange(); } Then used this in helper class to notify changes as follows private

问题 I have a view pager in the MainActivity , this view pager contains two tabs RecentFeed and SavedFeed both uses the same FeedFragment as both has same layout Now I want to update the contents of these fragments when a new gcm message is recieved or there occurs a change in my database here is what have done so far : I created a changelistening interface as follows- public interface OnDatabaseChangeListener { void onChange(); } Then used this in helper class to notify changes as follows private

问题 I'm having trouble with implementing clickable cards with my RecyclerView. I want to get the position of which card was clicked and then load the proper fragment. I did take a look at this post and spent almost 30 minutes trying to make sense of the code and implementing it myself but I gave up when I realized how many mistakes were in the snippet. Here is my adapter class. public class RVAdapter extends RecyclerView.Adapter<RVAdapter.PersonViewHolder> { public static CardView cv; public

问题 I'm having trouble with implementing clickable cards with my RecyclerView. I want to get the position of which card was clicked and then load the proper fragment. I did take a look at this post and spent almost 30 minutes trying to make sense of the code and implementing it myself but I gave up when I realized how many mistakes were in the snippet. Here is my adapter class. public class RVAdapter extends RecyclerView.Adapter<RVAdapter.PersonViewHolder> { public static CardView cv; public

问题 i have 4-5 fragments on MainActivity and on host fragment i have a recyclerview. on each item of recycler i have to open a fragment out of 4 more and kill the current fragment on which recycler is placed. i couldnt achieve this. here is my MainActivity where all fragments are placed and host fragment is homefragment where recycler is placed and i want to move from homefragment to another fragment when 0th item clicked public class MainActivity extends AppCompatActivity { private

问题 I created a bottom navigation activity in my project, which contains one activity and two fragments. In Main Activity I have value stored in a variable but if I pass the value to the fragments then I am getting NullPointer Exception error. I am using kotlin in my project and any help is appreciated. Expectation Get Value into Fragment from MainActivity. MainActivity--->TestOneFragment Language Used Kotlin Main Activity class Test : AppCompatActivity(), BottomNavigationView

问题 I created a bottom navigation activity in my project, which contains one activity and two fragments. In Main Activity I have value stored in a variable but if I pass the value to the fragments then I am getting NullPointer Exception error. I am using kotlin in my project and any help is appreciated. Expectation Get Value into Fragment from MainActivity. MainActivity--->TestOneFragment Language Used Kotlin Main Activity class Test : AppCompatActivity(), BottomNavigationView

问题 I created a bottom navigation activity in my project, which contains one activity and two fragments. In Main Activity I have value stored in a variable but if I pass the value to the fragments then I am getting NullPointer Exception error. I am using kotlin in my project and any help is appreciated. Expectation Get Value into Fragment from MainActivity. MainActivity--->TestOneFragment Language Used Kotlin Main Activity class Test : AppCompatActivity(), BottomNavigationView