android-paging

问题 After a lot of searching, I know its possible with regular adapter, but I have no idea how to do it using Paging Library. I don`t need code just a clue. Example 回答1: To add separators, you essentially have 2 options: View-based, you explicitly include separators as an 'item' in the list and define a new viewtype for those separators. Allows the list to re-use the separator views but means you need to take the separators into account when defining the data. Data-based, each item actually has a

问题 All examples of the new paging library have been with Room library and Room creates a Data Source for us. In my own case, I need to create my custom data source. Here is a method in my view model class that ought to return the live data. My livedata always returns null. LiveData<PagedList<ApiResult>> getData(){ LivePagedListProvider<Integer,ApiResult> p = new LivePagedListProvider<Integer, ApiResult>() { @Override protected DataSource<Integer, ApiResult> createDataSource() { return new

问题 I have multiple data sources. But there is only one DataSourceFactory. So, all sources is sharing one factory. I need one DataSourceFactory per data source. In my app, I have multiple views with RecyclerViews and hence multiple custom data sources. So, do you end up creating multiple implementations of DataSource.Factory per data source or is there a more generic solution? Edited I found the solution in my case. In my previous version, I used only one Datasource Factory for all datasources.

问题 Iʼm fairly new to developing Android apps and Iʼm trying to do everything “the right way.” So right now, Iʼm implementing the new Android Paging Library into my project, where I need to load a list of articles from a network server. I have an ArticlesRepository class that returns an ArticleList class containing instances of ArticleListItem that I would like to display in a RecyclerView. The list of articles is paginated already on the server, so the repository sends a request for the first

问题 I trying to implement the new Android paging library using Firestore as my backend. I have created a class MyDataSource that extends PageKeyedDataSource<Integer, MyObject> , where I'm implementing three functions: loadInitial loadBefore loadAfter For example one of the functions is this: @Override public void loadInitial(@NonNull LoadInitialParams<Integer> params, @NonNull final LoadInitialCallback<Integer, MyObject> callback) { query.addSnapshotListener((snapshots, exception) -> { if

问题 In my fragment, I integrated android jetpack paging library and the data source I using PageKeyedDataSource with retrofit API callback. the code runs as excepted and loads the data to recyclerview but after I scroll to the bottom, it supposed to load more data by firing loadAfter function in data source class but it didn't I also switched to ItemKeyedDataSource still it fails to execute is my code wrong or the plugin have an issue! but in some demo apps which I found in GitHub works perfectly

问题 I have been working with the arch libraries from Google, but one thing that has made testing difficult is working with PagedList . For this example, I am using the repository pattern and returning details from either an API or network. So within the ViewModel I make a call to this interface method: override fun getFoos(): Observable<PagedList<Foo>> The Repository will then use RxPagedListBuilder to create the Observable that is of type PagedList: override fun getFoos(): Observable<PagedList

问题 I am trying to set up all my lists using new Android Architecture Components: Room Persistance Library and Paging Library. But I am facing the following problem. Imagine an app that has a lots of diferents lists of the same model. Each list has his own url request to server. Some elements can be repeated in diferent responses. So I think that I have to insert and update all elements of each response to a table of that model. Furthermore, each request has pages. For example, elements/famous/0

问题 I'm using the Room and Paging libraries to display categories. My Entity: @Entity(tableName = Database.Table.CATEGORIES) data class Category( @PrimaryKey(autoGenerate = true) @ColumnInfo(name = ID) var id: Long = 0, @ColumnInfo(name = NAME) var name: String = "", @ColumnInfo(name = ICON_ID) var iconId: Int = 0, @ColumnInfo(name = COLOR) @ColorInt var color: Int = DEFAULT_COLOR ) My DAO: @Query("SELECT * FROM $CATEGORIES") fun getPagedCategories(): DataSource.Factory<Int, Category> @Update fun

问题 I am trying to show call log list using Room-Paging-LiveData-ViewModel. Without paging my code works perfectly. And I want to use paging also. In my database I have total 25 call log record. The first 9 call log is showing in the list. By debugging I found that while reading data in view model via Dao , it is returning list of size 25. But only first 9 of these are non null. All other entries in the list is null. I am expecting the null data will refresh soon as this is a paged list. But the