recycler-adapter

RecyclerView Adapter and ViewHolder update dynamically

谁都会走 提交于 2019-11-28 23:43:40
I am trying to make an app that will be loading news from the network and will be updating dynamically. I am using a RecyclerView and CardView to display the content. I use Jsoup to parse sites. I don't think that my code is needed because my question is more theoretical than practical. I want to understand the process of dynamic updating using notifyDataSetChanged() . In my main activity I get all the headers and add them to list. But I need to wait untill all the items are loaded to start displaying them. I would really appreciate if someone could post a sample code of what I'm trying to do

RecyclerView adapter taking wrong values

蹲街弑〆低调 提交于 2019-11-28 23:08:09
I have a RecyclerView wich shows two kinds of View s one represents an User publication and another that represents an Event publication. Both have elements in common, for example a TextView that shows a time stamp. So I created a PublicationViewHolder that takes this TextView time stamp into a variable and load it. My issue is that the adapter, initially, load the right values, but when I scroll down, and scroll up again, the values in the positions are changed by values from another positions. Here is the code: public class PublicationViewHolder extends RecyclerView.ViewHolder { private

Get list of checked checkboxes from recyclerview android

馋奶兔 提交于 2019-11-28 20:35:28
问题 I have populated the recyclerView with image, title and checkbox. I have two problems. How to make the checkbox selected when the imageview or the whole recycler item is clicked. I have to go to next activity by getting all the checked items from the recyclerview. My layout : <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="8dp"> <ImageView android:id="@+id/image" android:layout_width="match_parent" android:layout_height="150dp"

How to pass values from RecycleAdapter to MainActivity or Other Activities

≯℡__Kan透↙ 提交于 2019-11-28 15:51:42
问题 I am working on a shopping cart app,Items are displayed as below.There is a plus, minus (+/-) buttons to choose the number of quantity. If product quantity is changed, I need to pass "productname" and "quantity" to the main activity so that I could use them to prepare final cart. I got some suggestions to use database or some content providers, I am not sure how to do it.., please help MainActivity.java import android.app.ProgressDialog; import android.os.AsyncTask; import android.os.Bundle;

Data is getting added into list instead of getting updated in addChildEventListener's onChildChanged()

醉酒当歌 提交于 2019-11-28 14:39:44
I have some data in firebase which gets changed on some specific actions and I want that change to be shown in the app. I have a RecyclerView in which all the data from firebase is getting populated. Here's code: databaseReference.child("uListings").child(AccessToken.getCurrentAccessToken().getUserId()).addChildEventListener(new ChildEventListener() { @Override public void onChildAdded(DataSnapshot dataSnapshot, String s) { // recyclerview gets populated here } @Override public void onChildChanged(DataSnapshot dataSnapshot, String s) { if (dataSnapshot.getValue() != null) { Map<String,String>

RecyclerView not showing anything after updating Adapter data

≡放荡痞女 提交于 2019-11-28 13:00:22
问题 guys i need help with this matter i have been going through my code for a couple of days to figure whats going wrong but i couldn't figure it out. I have a fragment with a RecyclerView i initialize the Adapter data with an image place holder and some default text and the fragment shows them as expected then using a loader i fetch data from the internet and parse and pass the new data to the Adapter (all of this happens as required) until the data reaches the Adapter then Taaadaaaa the initial

Background color or Images shuffling on scrolling in recyclerview?

杀马特。学长 韩版系。学妹 提交于 2019-11-28 12:42:33
I am wondering that my images and color of layouts shuffling when i scrolls downwards or upwards, I created cardview using recyclerview. and set an image(changes color on click like to know if its user's favourite item) and setbackgroundcolor(randomly chossen) to the parent layout to make cardview attractive. but when i scrolls 1. the image that image changes position, 2. the layout background changes color automatically. I am posting my adapter's code here. public class TOAdapter extends RecyclerView.Adapter<TOAdapter.ViewHolder> { JSONArray jsonArray; private String title; private String

set Height of View Holder in OnBindViewHolder of Firebase Recycler

馋奶兔 提交于 2019-11-28 11:51:05
i have a recycler view in which i want to check for a condition first and then show the item in the recycler view. so i tried setting the VIew.visibility(gone) but it is leaving blank spaces and the values are coming out fine. but then i tried setting up the params for height in view which is turned out to be a disaster and now nothing is coming up on my screen. below is what i have done in my onCreateView i call a fragment Place Autocomplete autocompleteFragment.setOnPlaceSelectedListener (new PlaceSelectionListener() { @Override public void onPlaceSelected(Place place) { myPosition = null;

Set a click listener to a RecyclerView

妖精的绣舞 提交于 2019-11-28 11:11:58
I use RecyclerView adapter to display data inside an activity, I want to implement onClickListener inside the activity, currently, I am setting onClickListener inside adapter as usual which works fine. public void onBindViewHolder(MyHolder holder, final int position) { final Listdata data = listdata.get(position); holder.vname.setText(data.getName()); holder.vname.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Toast.makeText(activity, "clicked on " +position, Toast.LENGTH_SHORT).show(); } }); } However I want to implement it inside activity so I have

How to highlight selected item in RecyclerView

会有一股神秘感。 提交于 2019-11-27 23:39:18
问题 I have used RecyclerView for showing thumbnails in my Image Editing app.Each item of its comprises of a ImageView(thumbnail) and a textView.In my application I want to highlight only current selected thumbnail when clicked.Gone through all the related posts on SO but couldn't find any better solution. My Adapter Class public class FiltersAdapter extends RecyclerView.Adapter<FiltersAdapter.ViewHolder> { private Context mContext; private List<Type> mDataSet; private Uri selectedPhoto; public