android-recyclerview

问题 I am using multiple View-holder inside recycler which placed inside nested scroll view,There is a change in Natural behaviour of onBindViewHolder() Recycler view because of Nested Scroll, getItemViewType() all items are called inside onBindViewHolder() when initiate recycler adapter,For Example I have 20 Items means in normal scenario only three items called when initiate,but in case of nested scroll view all 20 views create on first load. Xml File <android.support.design.widget

问题 The RecyclerView.ViewHolder class has a field that is public final View itemView . It says that the onBindViewHolder method should update the contents of the itemView to reflect the item at the given position . Doesn’t the final modifier indicate that the value of this field cannot change ? The code below is from the textbook : public class ViewHolder extends RecyclerView.ViewHolder { ... @Override public int getItemCount() { ... } @Override public ViewHolder onCreateViewHolder(ViewGroup

问题 I have an Android Recyclerview which has some more rows of item. In the sense Recyclerview comprises of Row 1 ->> TextView , below that one more textview Row 2 ->> TextView , below that one more textview Issue is that, whenever I turn on the Talkback, it reads out the entire Recyclerview in one go, which is not expected, it should read one item at a time depending on the focussed item. Expected behavior is - Read component on Focus when d-pad is moved onto it. Any help?? 回答1: It would appear

问题 Here is what I have achieved ? 3 different sections , 10 different items in each section. Here is the tutorial link I am following and below is the Screenshot : Trying to show different Views for each and every Section . Like: For Section 1 (layout_1.xml) For Section 2 (layout_2.xml) For Section 3 (layout_3.xml) But showing layout view of layout_1.xml in every Section ... (Section 1, 2, 3) May I know where I am doing mistake in my code, what I have missed ? public class SectionListDataAdapter

问题 I am able to change the color of the text and background of imageview of the row clicked of my recyclerview in my navigation drawer fragment . But my problem is after clicking the 4th item,the 1st item also gets selected.Likewise after clicking my 5th item the 2nd item is selected. Like this: How do i solve this? So that only one item is selected at a time? FragmentDrawer.java public class FragmentDrawer extends Fragment { private static String TAG = FragmentDrawer.class.getSimpleName();

问题 I am facing issue where youtube video is not displaying only last one is getting played and that too when I scroll the video disappears. What i wanted is every video should be displayed and every video is different. public class MyRecyclerViewAdapter extends Adapter<MyRecyclerViewAdapter .DataObjectHolder> { private static String LOG_TAG = "MyRecyclerViewAdapter"; private ArrayList<DataObject> mDataset; private static MyClickListener myClickListener; private static final int RECOVERY_DIALOG

问题 public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); RecyclerView list = (RecyclerView) findViewById(R.id.list); list.setLayoutManager(new LinearLayoutManager(this)); final RecyclerView.Adapter adapter = getAdapter(); list.setAdapter(adapter); adapter.notifyItemChanged(1, new Object());//this doesn't work list.post(new Runnable() { @Override public void run() {

问题 I have two text views side by side in my RecyclerView item. One of the views has layout_weight="1" to keep another view visible if the view is wide. The problem is that the the view sizes are not updating when the views got recycled, so to textView id:name width is not correct when i scroll the list. Should I somehow force the view to update the layout? My RecyclerView item: <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="16dp"

问题 I have an horizontal RecyclerView with leftPadding = 48dp , topPadding = 24dp and clipToPadding = false . It starts with an empty space on the left, but when the user scrolls the list its items are drawn on that (previously empty) space. The top space is always empty. This RecyclerView is inside a FrameLayout with foreground = selectableItemBackground . My problem comes from the fact that the RecyclerView consumes and ignores touches on the left and top spaces, meaning an OnClickListener won

问题 I am trying to create messaging kind of screen using recyclerView which will start from bottom and will loadMore data when user reached top end of chat. But I am facing this weird issue. My recyclerView scrolls to top on calling notifyDataSetChanged. Due to this onLoadMore gets called multiple times. Here is my code: LinearLayoutManager llm = new LinearLayoutManager(context); llm.setOrientation(LinearLayoutManager.VERTICAL); llm.setStackFromEnd(true); recyclerView.setLayoutManager(llm); ** In