android-recyclerview

问题 I have some problems understanding RecyclerView s SortedList . Lets say I have a very simple class only having a very simple class holding data: public class Pojo { public final int id; public final char aChar; public Pojo(int id, char aChar) { this.id = id; this.aChar = aChar; } @Override public String toString() { return "Pojo[" + "id=" + id + ",aChar=" + aChar + "]"; } } My understanding is that the sorted list won't contain any duplicates. But when I have a SortedList with callbacks like

问题 I have seen this question many times in StackOverflow, but i couldn't get the issue fixed. So reaching out for help. Please note: i have already checked other questions on SO and though i could get rid of the error, there are other issues with it. Here is my existing code: My Adapter class: public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { Context context; private final int VIEW_TYPE_ITEM = 0; private final int VIEW_TYPE_LOADING = 1; private

问题 I have an overflow button inside a CardView in Recyclerview . Whenever I am clicking the button,I show a popup menu but also RecyclerView is scrolling down one item. Can anyone please help me stop this unwanted scrolling? Basically I am trying to replicate the same overflow button behavior as in Playstore. Layout: <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="5dp">

问题 I followed this example here: https://developer.android.com/training/material/lists-cards.html What's Happening : The list (RecyclerView) is mixing up the data when I scroll. I.e. when I scroll back up after scrolling down, some of the list items are repeated, not displaying proper content. Here is my onBindViewHolder method: // cardsData is a List of MyCardItem (MyCardItem is just a holder of information, // such as an id, String title, String summary, and other info to display on a card

问题 How can I add a slide in animation on my recycler view items one after the other. Like as the activity starts, the list items of the recycler view slides in one by one. I am using LinearLayoutManager Not all at the same time should slide in. And not even while scrolling. Just at the time of activity creation. I searched but didn't find anything. I want to achieve something like this : https://youtu.be/Q8TXgCzxEnw?t=30s 回答1: I put together a sample app a couple of months ago that has a

问题 How can I add a slide in animation on my recycler view items one after the other. Like as the activity starts, the list items of the recycler view slides in one by one. I am using LinearLayoutManager Not all at the same time should slide in. And not even while scrolling. Just at the time of activity creation. I searched but didn't find anything. I want to achieve something like this : https://youtu.be/Q8TXgCzxEnw?t=30s 回答1: I put together a sample app a couple of months ago that has a

问题 I am trying to develop e-commerce type of app in which user can add item to cart. But I am unable to update the cart badge counter from adapter. Here is screenshot of my app. I am using Recycler view inside fragment. And I am referring this below link for menu item count. https://mobikul.com/adding-badge-count-on-menu-items-like-cart-notification-etc/ My problem is I cannot access menu item from adapter. Here is my fragment code. PriceListFragment.java public class PriceListFragment extends

问题 I have a RecyclerView which listing a text and a button. If i click button, Toast text shows position and button color will change to #343434 . When i click a button this works good but if i cycle my RecyclerView another button color changing but not clicking, only background color changing. As you can see below gif : First i am clicking Item 1 and Toast text appear,button background change. Then i cycle down and Item 15's button background is changing. Lastly i scroll up to first position

问题 I have a RecyclerView which listing a text and a button. If i click button, Toast text shows position and button color will change to #343434 . When i click a button this works good but if i cycle my RecyclerView another button color changing but not clicking, only background color changing. As you can see below gif : First i am clicking Item 1 and Toast text appear,button background change. Then i cycle down and Item 15's button background is changing. Lastly i scroll up to first position

问题 I am implementing the ExoPlayer in a RecyclerView. But while scrolling the Video stops, but not the audio. How can I release the ExoPlayer in the RecyclerView? Or how can I get the position of the Recycled Object so I am able to release the ExoPlayer? This is my Data Object public class enter code here Video { private String url; private Context context; Boolean playWhenReady = false; int currentWindow = 0; long playbackPosition = 0; ExoPlayer player; public Video(String url, Context context)