android-recyclerview

问题 If I look at the stackoverflow app's horizontal recyclerview, I can see that they use the "fading edge" technique so that the user will know that there are items on the left and right of the recyclerview and he / she can scroll. In listview, I think this effect is enabled by calling the below as described by Romain Guy (http://www.curious-creature.com/category/android/page/2/): android:cacheColorHint="#00000000" No such option exist in Recyclerview unfort. Is there a built in method to allow

问题 I have a parent recyclerview that has 3 child view in it. The last two of the child are recyclerview. Parent recyclerview - child view 1 - child view 2 (horizontal rv) - child view 3 (horizontal rv) The issue is every time this fragment is visible, it scrolls itself to align with child view 2 's bottom. I have set the parent rv to listen for scroll. This is what I end up with: dy: 108 dy: 72 dy: 75 dy: 62 dy: 48 dy: 42 dy: 34 dy: 27 dy: 22 dy: 16 dy: 12 dy: 10 dy: 7 dy: 5 dy: 3 dy: 3 dy: 1 dy

问题 I am using Navigation Drawer to navigate between fragments they all use the MainActivity toolbar but each fragment has it's own TabLayout with 3 tabs and in each tab I am using RecyclerView to show different text and images. I did this last time using actvities instead of fragments but now using the drawer it's beter to use fragments. I have got to a point where the tabs work but as soon as I put the ViewPager in and connect the adapters to the tabs and I open the new fragment from the drawer

问题 What are the advantages of this approach (using static nested class in my class MyAdapter extends RecyclerView.Adapter): static class MyVH extends RecyclerView.ViewHolder {...} And this approach (using member inner class): class MyVH extends RecyclerView.ViewHolder {...} Or it doesn't affect performance and both approaches could be used? 回答1: It is more a java question than an Android question. It is recommended to use static for inner classes to avoid memory leaks if you will take their

问题 I try to make a grid-layout with square images. I thought that it must be possible to manipulate the GridLayoutManager by manipulating onMeasure to do a super.onMeasure(recycler, state, widthSpec, widthSpec); instead of super.onMeasure(recycler, state, widthSpec, heightSpec); but unfortunately, that didn't work. Any ideas? 回答1: To have the square elements in my RecyclerView, I provide a simple wrapper for my root View element; I use the following SquareRelativeLayout in place of

问题 I'm trying to refresh specific item in RecyclerView . Story: Whenever user clicks on item, it shows AlertDialog . User can type some text by clicking ok button. I want to show this text in this item and show invisible ImageView - declared in XML and adapter ViewHolder - I used this function in AlertDialog Positive Button to update the item: private void updateListItem(int position) { View view = layoutManager.findViewByPosition(position); ImageView medicineSelected = (ImageView) view

问题 When I put a RecyclerView inside a nested scrollview, the screen always jumps to the top of the RecyclerView instead of the top of the page. Here is a simple example. layout xml: <?xml version="1.0" encoding="utf-8"?> <layout xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android"> <android.support.v4.widget.NestedScrollView android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:orientation="vertical"

问题 I couldn't find any better example for using RecyclerView with StaggeredGridLayoutManager . Not even in Android Docs. Q1. I need some examples which can give proper explanation about how to use RecyclerView with StaggeredGridLayoutManager . Q2. Can anyone tell me if it is possible to create following layout using RecyclerView with StaggeredGridLayoutManager So far i have found this link which is not at all useful. I also found this link for cardslib but it is too much complex in

问题 I couldn't find any better example for using RecyclerView with StaggeredGridLayoutManager . Not even in Android Docs. Q1. I need some examples which can give proper explanation about how to use RecyclerView with StaggeredGridLayoutManager . Q2. Can anyone tell me if it is possible to create following layout using RecyclerView with StaggeredGridLayoutManager So far i have found this link which is not at all useful. I also found this link for cardslib but it is too much complex in

问题 I have Recycler view which lays inside of SwipeRefreshLayout. Also, have ability to open each item in another activity. After returning back to Recycler I need scroll to chosen item, or to previous Y. How to do that? Yes, I googled, found articles in StackOverFlow about saving instance of layout manager, like this one: RecyclerView store / restore state between activities. But, it doesn't help me. UPDATE Right now I have this kind of resolving problem, but, of course, it also doesn't work.