android-viewholder

问题 FATAL EXCEPTION: main Process: com.zipato.android.client.v2, PID: 24966 java.lang.IllegalArgumentException: Scrapped or attached views may not be recycled. isScrap:false isAttached:true at android.support.v7.widget.RecyclerView$Recycler.recycleViewHolderInternal(RecyclerView.java:5736) at android.support.v7.widget.RecyclerView$Recycler.recycleView(RecyclerView.java:5680) at android.support.v7.widget.GapWorker.prefetchPositionWithDeadline(GapWorker.java:289) at android.support.v7.widget

问题 I'm trying to use androids databinding feature in new project and so far very happy with it. But now i came across a problem in my recyclerviews viewholder. My viewholder uses different layouts (based on the viewtype when it gets created) public MediaViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { switch(viewType){ case HEADER: int layout = R.layout.item_media_header; break; case DEFAULT: int layout = R.layout.item_media_default; break; case SMALL: int layout = R.layout.item

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 have a sample app from exoguru which contains cardview each card consists of an image and corresponding text .Now how to display that image and text in another activity on clicking that particular card? Here is the screenshot Here is the ViewHolder which contains the onclick for the cardview class ViewHolder extends RecyclerView.ViewHolder{ public ImageView imgThumbnail; public TextView tvNature; public TextView tvDesNature; public ViewHolder(View itemView) { super(itemView); imgThumbnail =

问题 I have in my MainActivity 3 RecyclerViews . One of them in a bottom sheet and it is the main one (By Default the Bottom sheet is Open To Display this one ), in its adapter's onbind method I made an onClickListener so that I want when the user clicks on an item in it, I want to go back to the main activity class to set To Start a method which it's rolled is to close the Bottom Sheet and set the data for the next recycling view (which will appear when the Bottom Sheet is closed) ..... The issue

问题 I know this question is asked many times before and followed them and I am up to the mark to a great extent with only one problem left.I was able to solve the duplicating issue by adding textwatcher and using hashmap to store value but problem that is left is that the value of original edit text is also gone when I scroll back to it. By this I mean that if I type something in say first EditText and then scroll down, that value doesn't get repeated anywhere but the value of EditText in which I

问题 I understand the idea and usage of Viewholder pattern, but still I have one question: Assume we have one TextView in the viewholder, and 10 items to display ("item0, item1...."). If I call findViewById once, as I understand I have one object of that TextView. So at first call to getView I inflate the view, find the reference and set text "item0". At second call I get same TextView and set text "item1" to the same TextView. Why item 0 text doesn't change? Is there any cloning in the background

问题 I need some help, i am using a viewholder to display from a dynamic arrayadapter. I have list view . Each row contains ; Title (Textview), sub title(TextView), Progress bar Download Button (Button). I want to show progress bar and hide Download Button when Download Button is clicked. When download button in first row clicked, first progress bar is showing but 8th progress bar is showing too. This is my code. what i am doing wrong? public class TabInComingAdaptor extends BaseAdapter { public

问题 I'm retrieving some data from Firebase and showing it using RecyclerView . My RecyclerView has cards in it in which the text and images are getting retrieved. The card has a button on it which starts a floaty. The floaty has a ImageView and a TextView in which the image and text from the card from which the button was clicked should be shown. The problem is that when clicking that button of the first card, the floaty is getting started and showing the image and text from that respective card,

问题 I've spent the last 2 days attempting to triage why my RecyclerView is so is so unbearably slow while scrolling and I've narrowed it down to the ConstraintLayout I'm using for the rows. Using the GPU profiler on android shows green/blueish green bars all the way up to the top of the screen, indicating substantial jank. It's super obvious something is wrong. Here's what my viewholder looks like: class MyViewHolder( override val containerView: View) : RecyclerView.ViewHolder(containerView),