Mixing
Android recyclerview-selection Implementation?
I'm currently trying to implement the new recyclerview-selection APIs from Android Support Library 28.0.0-alpha1, and am running into some issues. My goal is to have a RecyclerView, with the ability to select multiple rows, show a Contextual Action Bar, and perform actions on them, such as "delete" or "share"
I'll try and furnish enough code to give a good idea of what's going on, but I can always respond with more if necessary.
In my Fragment which contains the RecyclerView I'm concerned with, I am initiating a SelectionTracker, and setting it on my RecyclerView.Adapter, like so:
private void buildRecyclerView() {
sheetsAdapter = new SheetsAdapter(getContext(), this, sheets);
gridManager = new GridLayoutManager(getContext(), getResources().getInteger(R.integer.grid_span_count));
ItemOffsetDecoration itemDecoration = new ItemOffsetDecoration(getContext(), R.dimen.item_offset);
sheetsRecycler.addItemDecoration(itemDecoration);
sheetsRecycler.setLayoutManager(gridManager);
sheetsRecycler.setAdapter(sheetsAdapter);
sheetsRecycler.setHasFixedSize(true);
SelectionTracker selectionTracker = new SelectionTracker.Builder<>("sheet_selection",
sheetsRecycler,
new StableIdKeyProvider(sheetsRecycler),
new SheetDetailsLookup(sheetsRecycler),
StorageStrategy.createLongStorage())
.withOnContextClickListener(this)
.build();
sheetsAdapter.setSelectionTracker(selectionTracker);
}
This Fragment also implements OnContextClickListener, in order to listen for long-clicks on the items in my RecyclerView:
@Override
public boolean onContextClick(@NonNull MotionEvent e) {
if (actionMode != null) {
return false;
}
// Start the CAB using the ActionMode.Callback defined below
if (getActivity() != null) {
actionMode = ((AppCompatActivity) getActivity()).startSupportActionMode(actionModeCallback);
}
return true;
}
And it should show my CAB, like this:
private ActionMode.Callback actionModeCallback = new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.sheets_cab_menu, menu);
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
switch (item.getItemId()) {
case R.id.delete:
Toast.makeText(getContext(), R.string.sheets_delete, Toast.LENGTH_SHORT).show();
mode.finish();
return true;
default:
return false;
}
}
@Override
public void onDestroyActionMode(ActionMode mode) {
actionMode = null;
}
};
My SheetDetailsLookup looks like this:
public class SheetDetailsLookup extends ItemDetailsLookup<Long> {
private RecyclerView recyclerView;
SheetDetailsLookup(RecyclerView recyclerView) {
super();
this.recyclerView = recyclerView;
}
@Nullable
@Override
public ItemDetails<Long> getItemDetails(@NonNull MotionEvent e) {
View view = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (view != null) {
RecyclerView.ViewHolder holder = recyclerView.getChildViewHolder(view);
if (holder instanceof SheetsAdapter.SheetViewHolder) {
return ((SheetsAdapter.SheetViewHolder) holder).getItemDetails();
}
}
return null;
}
}
And in my SheetViewHolder, I update the view to show that it has been selected:
if (selectionTracker.isSelected(sheet.uid)) {
layout.setBackgroundResource(R.color.md_grey_700);
} else {
layout.setBackgroundResource(android.R.color.transparent);
}
As well as:
public SheetItemDetails getItemDetails() {
return new SheetItemDetails(getAdapterPosition(), mSheets.get(getAdapterPosition()).uid);
}
Where SheetItemDetails is simply:
public class SheetItemDetails extends ItemDetailsLookup.ItemDetails<Long> {
private int position;
private Long key;
SheetItemDetails(int position, Long key) {
this.position = position;
this.key = key;
}
@Override
public int getPosition() {
return position;
}
@Nullable
@Override
public Long getSelectionKey() {
return key;
}
}
I've implemented all of the things mentioned in the API specification, but am now running into troubles. My CAB doesn't show up when I select an item... and the app usually crashes. Crashes occur whenever I try to "back out" of selections,and then long-click to start another selection, with this stack trace:
java.lang.IllegalStateException
at android.support.v4.util.Preconditions.checkState(Preconditions.java:130)
at android.support.v4.util.Preconditions.checkState(Preconditions.java:142)
at androidx.recyclerview.selection.GestureSelectionHelper.start(GestureSelectionHelper.java:76)
at androidx.recyclerview.selection.SelectionTracker$Builder$4.run(SelectionTracker.java:742)
at androidx.recyclerview.selection.TouchInputHandler.onLongPress(TouchInputHandler.java:136)
at androidx.recyclerview.selection.GestureRouter.onLongPress(GestureRouter.java:95)
at android.view.GestureDetector.dispatchLongPress(GestureDetector.java:779)
at android.view.GestureDetector.access$200(GestureDetector.java:40)
at android.view.GestureDetector$GestureHandler.handleMessage(GestureDetector.java:293)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
Also, I've now lost the ability to "short-click" on one of my items, to launch a detail view... Which I had working just fine until now.
What have I done wrong?
android android-recyclerview multipleselection android-actionmode asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
add a comment |
I'm currently trying to implement the new recyclerview-selection APIs from Android Support Library 28.0.0-alpha1, and am running into some issues. My goal is to have a RecyclerView, with the ability to select multiple rows, show a Contextual Action Bar, and perform actions on them, such as "delete" or "share"
I'll try and furnish enough code to give a good idea of what's going on, but I can always respond with more if necessary.
In my Fragment which contains the RecyclerView I'm concerned with, I am initiating a SelectionTracker, and setting it on my RecyclerView.Adapter, like so:
private void buildRecyclerView() {
sheetsAdapter = new SheetsAdapter(getContext(), this, sheets);
gridManager = new GridLayoutManager(getContext(), getResources().getInteger(R.integer.grid_span_count));
ItemOffsetDecoration itemDecoration = new ItemOffsetDecoration(getContext(), R.dimen.item_offset);
sheetsRecycler.addItemDecoration(itemDecoration);
sheetsRecycler.setLayoutManager(gridManager);
sheetsRecycler.setAdapter(sheetsAdapter);
sheetsRecycler.setHasFixedSize(true);
SelectionTracker selectionTracker = new SelectionTracker.Builder<>("sheet_selection",
sheetsRecycler,
new StableIdKeyProvider(sheetsRecycler),
new SheetDetailsLookup(sheetsRecycler),
StorageStrategy.createLongStorage())
.withOnContextClickListener(this)
.build();
sheetsAdapter.setSelectionTracker(selectionTracker);
}
This Fragment also implements OnContextClickListener, in order to listen for long-clicks on the items in my RecyclerView:
@Override
public boolean onContextClick(@NonNull MotionEvent e) {
if (actionMode != null) {
return false;
}
// Start the CAB using the ActionMode.Callback defined below
if (getActivity() != null) {
actionMode = ((AppCompatActivity) getActivity()).startSupportActionMode(actionModeCallback);
}
return true;
}
And it should show my CAB, like this:
private ActionMode.Callback actionModeCallback = new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.sheets_cab_menu, menu);
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
switch (item.getItemId()) {
case R.id.delete:
Toast.makeText(getContext(), R.string.sheets_delete, Toast.LENGTH_SHORT).show();
mode.finish();
return true;
default:
return false;
}
}
@Override
public void onDestroyActionMode(ActionMode mode) {
actionMode = null;
}
};
My SheetDetailsLookup looks like this:
public class SheetDetailsLookup extends ItemDetailsLookup<Long> {
private RecyclerView recyclerView;
SheetDetailsLookup(RecyclerView recyclerView) {
super();
this.recyclerView = recyclerView;
}
@Nullable
@Override
public ItemDetails<Long> getItemDetails(@NonNull MotionEvent e) {
View view = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (view != null) {
RecyclerView.ViewHolder holder = recyclerView.getChildViewHolder(view);
if (holder instanceof SheetsAdapter.SheetViewHolder) {
return ((SheetsAdapter.SheetViewHolder) holder).getItemDetails();
}
}
return null;
}
}
And in my SheetViewHolder, I update the view to show that it has been selected:
if (selectionTracker.isSelected(sheet.uid)) {
layout.setBackgroundResource(R.color.md_grey_700);
} else {
layout.setBackgroundResource(android.R.color.transparent);
}
As well as:
public SheetItemDetails getItemDetails() {
return new SheetItemDetails(getAdapterPosition(), mSheets.get(getAdapterPosition()).uid);
}
Where SheetItemDetails is simply:
public class SheetItemDetails extends ItemDetailsLookup.ItemDetails<Long> {
private int position;
private Long key;
SheetItemDetails(int position, Long key) {
this.position = position;
this.key = key;
}
@Override
public int getPosition() {
return position;
}
@Nullable
@Override
public Long getSelectionKey() {
return key;
}
}
I've implemented all of the things mentioned in the API specification, but am now running into troubles. My CAB doesn't show up when I select an item... and the app usually crashes. Crashes occur whenever I try to "back out" of selections,and then long-click to start another selection, with this stack trace:
java.lang.IllegalStateException
at android.support.v4.util.Preconditions.checkState(Preconditions.java:130)
at android.support.v4.util.Preconditions.checkState(Preconditions.java:142)
at androidx.recyclerview.selection.GestureSelectionHelper.start(GestureSelectionHelper.java:76)
at androidx.recyclerview.selection.SelectionTracker$Builder$4.run(SelectionTracker.java:742)
at androidx.recyclerview.selection.TouchInputHandler.onLongPress(TouchInputHandler.java:136)
at androidx.recyclerview.selection.GestureRouter.onLongPress(GestureRouter.java:95)
at android.view.GestureDetector.dispatchLongPress(GestureDetector.java:779)
at android.view.GestureDetector.access$200(GestureDetector.java:40)
at android.view.GestureDetector$GestureHandler.handleMessage(GestureDetector.java:293)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
Also, I've now lost the ability to "short-click" on one of my items, to launch a detail view... Which I had working just fine until now.
What have I done wrong?
android android-recyclerview multipleselection android-actionmode asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
1.withOnContextClickListeneris not for long-click 2.yourgetItemDetailsreturns a new instance every time. Can you paste the entire code?
– wangqi060934
Jun 1 '18 at 3:12
I'm facing the short-click trouble too. I'm using Kotlin and ParcelableStorage for the item key and everything is working fine but the simple click listener event. How did you solve this?
– Jose Ricardo Citerio Alcala
Jan 2 at 2:17
add a comment |
I'm currently trying to implement the new recyclerview-selection APIs from Android Support Library 28.0.0-alpha1, and am running into some issues. My goal is to have a RecyclerView, with the ability to select multiple rows, show a Contextual Action Bar, and perform actions on them, such as "delete" or "share"
I'll try and furnish enough code to give a good idea of what's going on, but I can always respond with more if necessary.
In my Fragment which contains the RecyclerView I'm concerned with, I am initiating a SelectionTracker, and setting it on my RecyclerView.Adapter, like so:
private void buildRecyclerView() {
sheetsAdapter = new SheetsAdapter(getContext(), this, sheets);
gridManager = new GridLayoutManager(getContext(), getResources().getInteger(R.integer.grid_span_count));
ItemOffsetDecoration itemDecoration = new ItemOffsetDecoration(getContext(), R.dimen.item_offset);
sheetsRecycler.addItemDecoration(itemDecoration);
sheetsRecycler.setLayoutManager(gridManager);
sheetsRecycler.setAdapter(sheetsAdapter);
sheetsRecycler.setHasFixedSize(true);
SelectionTracker selectionTracker = new SelectionTracker.Builder<>("sheet_selection",
sheetsRecycler,
new StableIdKeyProvider(sheetsRecycler),
new SheetDetailsLookup(sheetsRecycler),
StorageStrategy.createLongStorage())
.withOnContextClickListener(this)
.build();
sheetsAdapter.setSelectionTracker(selectionTracker);
}
This Fragment also implements OnContextClickListener, in order to listen for long-clicks on the items in my RecyclerView:
@Override
public boolean onContextClick(@NonNull MotionEvent e) {
if (actionMode != null) {
return false;
}
// Start the CAB using the ActionMode.Callback defined below
if (getActivity() != null) {
actionMode = ((AppCompatActivity) getActivity()).startSupportActionMode(actionModeCallback);
}
return true;
}
And it should show my CAB, like this:
private ActionMode.Callback actionModeCallback = new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.sheets_cab_menu, menu);
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
switch (item.getItemId()) {
case R.id.delete:
Toast.makeText(getContext(), R.string.sheets_delete, Toast.LENGTH_SHORT).show();
mode.finish();
return true;
default:
return false;
}
}
@Override
public void onDestroyActionMode(ActionMode mode) {
actionMode = null;
}
};
My SheetDetailsLookup looks like this:
public class SheetDetailsLookup extends ItemDetailsLookup<Long> {
private RecyclerView recyclerView;
SheetDetailsLookup(RecyclerView recyclerView) {
super();
this.recyclerView = recyclerView;
}
@Nullable
@Override
public ItemDetails<Long> getItemDetails(@NonNull MotionEvent e) {
View view = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (view != null) {
RecyclerView.ViewHolder holder = recyclerView.getChildViewHolder(view);
if (holder instanceof SheetsAdapter.SheetViewHolder) {
return ((SheetsAdapter.SheetViewHolder) holder).getItemDetails();
}
}
return null;
}
}
And in my SheetViewHolder, I update the view to show that it has been selected:
if (selectionTracker.isSelected(sheet.uid)) {
layout.setBackgroundResource(R.color.md_grey_700);
} else {
layout.setBackgroundResource(android.R.color.transparent);
}
As well as:
public SheetItemDetails getItemDetails() {
return new SheetItemDetails(getAdapterPosition(), mSheets.get(getAdapterPosition()).uid);
}
Where SheetItemDetails is simply:
public class SheetItemDetails extends ItemDetailsLookup.ItemDetails<Long> {
private int position;
private Long key;
SheetItemDetails(int position, Long key) {
this.position = position;
this.key = key;
}
@Override
public int getPosition() {
return position;
}
@Nullable
@Override
public Long getSelectionKey() {
return key;
}
}
I've implemented all of the things mentioned in the API specification, but am now running into troubles. My CAB doesn't show up when I select an item... and the app usually crashes. Crashes occur whenever I try to "back out" of selections,and then long-click to start another selection, with this stack trace:
java.lang.IllegalStateException
at android.support.v4.util.Preconditions.checkState(Preconditions.java:130)
at android.support.v4.util.Preconditions.checkState(Preconditions.java:142)
at androidx.recyclerview.selection.GestureSelectionHelper.start(GestureSelectionHelper.java:76)
at androidx.recyclerview.selection.SelectionTracker$Builder$4.run(SelectionTracker.java:742)
at androidx.recyclerview.selection.TouchInputHandler.onLongPress(TouchInputHandler.java:136)
at androidx.recyclerview.selection.GestureRouter.onLongPress(GestureRouter.java:95)
at android.view.GestureDetector.dispatchLongPress(GestureDetector.java:779)
at android.view.GestureDetector.access$200(GestureDetector.java:40)
at android.view.GestureDetector$GestureHandler.handleMessage(GestureDetector.java:293)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
Also, I've now lost the ability to "short-click" on one of my items, to launch a detail view... Which I had working just fine until now.
What have I done wrong?
android android-recyclerview multipleselection android-actionmode asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
I'm currently trying to implement the new recyclerview-selection APIs from Android Support Library 28.0.0-alpha1, and am running into some issues. My goal is to have a RecyclerView, with the ability to select multiple rows, show a Contextual Action Bar, and perform actions on them, such as "delete" or "share"
I'll try and furnish enough code to give a good idea of what's going on, but I can always respond with more if necessary.
In my Fragment which contains the RecyclerView I'm concerned with, I am initiating a SelectionTracker, and setting it on my RecyclerView.Adapter, like so:
private void buildRecyclerView() {
sheetsAdapter = new SheetsAdapter(getContext(), this, sheets);
gridManager = new GridLayoutManager(getContext(), getResources().getInteger(R.integer.grid_span_count));
ItemOffsetDecoration itemDecoration = new ItemOffsetDecoration(getContext(), R.dimen.item_offset);
sheetsRecycler.addItemDecoration(itemDecoration);
sheetsRecycler.setLayoutManager(gridManager);
sheetsRecycler.setAdapter(sheetsAdapter);
sheetsRecycler.setHasFixedSize(true);
SelectionTracker selectionTracker = new SelectionTracker.Builder<>("sheet_selection",
sheetsRecycler,
new StableIdKeyProvider(sheetsRecycler),
new SheetDetailsLookup(sheetsRecycler),
StorageStrategy.createLongStorage())
.withOnContextClickListener(this)
.build();
sheetsAdapter.setSelectionTracker(selectionTracker);
}
This Fragment also implements OnContextClickListener, in order to listen for long-clicks on the items in my RecyclerView:
@Override
public boolean onContextClick(@NonNull MotionEvent e) {
if (actionMode != null) {
return false;
}
// Start the CAB using the ActionMode.Callback defined below
if (getActivity() != null) {
actionMode = ((AppCompatActivity) getActivity()).startSupportActionMode(actionModeCallback);
}
return true;
}
And it should show my CAB, like this:
private ActionMode.Callback actionModeCallback = new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.sheets_cab_menu, menu);
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
switch (item.getItemId()) {
case R.id.delete:
Toast.makeText(getContext(), R.string.sheets_delete, Toast.LENGTH_SHORT).show();
mode.finish();
return true;
default:
return false;
}
}
@Override
public void onDestroyActionMode(ActionMode mode) {
actionMode = null;
}
};
My SheetDetailsLookup looks like this:
public class SheetDetailsLookup extends ItemDetailsLookup<Long> {
private RecyclerView recyclerView;
SheetDetailsLookup(RecyclerView recyclerView) {
super();
this.recyclerView = recyclerView;
}
@Nullable
@Override
public ItemDetails<Long> getItemDetails(@NonNull MotionEvent e) {
View view = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (view != null) {
RecyclerView.ViewHolder holder = recyclerView.getChildViewHolder(view);
if (holder instanceof SheetsAdapter.SheetViewHolder) {
return ((SheetsAdapter.SheetViewHolder) holder).getItemDetails();
}
}
return null;
}
}
And in my SheetViewHolder, I update the view to show that it has been selected:
if (selectionTracker.isSelected(sheet.uid)) {
layout.setBackgroundResource(R.color.md_grey_700);
} else {
layout.setBackgroundResource(android.R.color.transparent);
}
As well as:
public SheetItemDetails getItemDetails() {
return new SheetItemDetails(getAdapterPosition(), mSheets.get(getAdapterPosition()).uid);
}
Where SheetItemDetails is simply:
public class SheetItemDetails extends ItemDetailsLookup.ItemDetails<Long> {
private int position;
private Long key;
SheetItemDetails(int position, Long key) {
this.position = position;
this.key = key;
}
@Override
public int getPosition() {
return position;
}
@Nullable
@Override
public Long getSelectionKey() {
return key;
}
}
I've implemented all of the things mentioned in the API specification, but am now running into troubles. My CAB doesn't show up when I select an item... and the app usually crashes. Crashes occur whenever I try to "back out" of selections,and then long-click to start another selection, with this stack trace:
java.lang.IllegalStateException
at android.support.v4.util.Preconditions.checkState(Preconditions.java:130)
at android.support.v4.util.Preconditions.checkState(Preconditions.java:142)
at androidx.recyclerview.selection.GestureSelectionHelper.start(GestureSelectionHelper.java:76)
at androidx.recyclerview.selection.SelectionTracker$Builder$4.run(SelectionTracker.java:742)
at androidx.recyclerview.selection.TouchInputHandler.onLongPress(TouchInputHandler.java:136)
at androidx.recyclerview.selection.GestureRouter.onLongPress(GestureRouter.java:95)
at android.view.GestureDetector.dispatchLongPress(GestureDetector.java:779)
at android.view.GestureDetector.access$200(GestureDetector.java:40)
at android.view.GestureDetector$GestureHandler.handleMessage(GestureDetector.java:293)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
Also, I've now lost the ability to "short-click" on one of my items, to launch a detail view... Which I had working just fine until now.
What have I done wrong?
android android-recyclerview multipleselection android-actionmode android android-recyclerview multipleselection android-actionmode asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
asked Mar 28 '18 at 23:27
drinfernoodrinfernoo
2613
2613
1.withOnContextClickListeneris not for long-click 2.yourgetItemDetailsreturns a new instance every time. Can you paste the entire code?
– wangqi060934
Jun 1 '18 at 3:12
I'm facing the short-click trouble too. I'm using Kotlin and ParcelableStorage for the item key and everything is working fine but the simple click listener event. How did you solve this?
– Jose Ricardo Citerio Alcala
Jan 2 at 2:17
add a comment |
1.withOnContextClickListeneris not for long-click 2.yourgetItemDetailsreturns a new instance every time. Can you paste the entire code?
– wangqi060934
Jun 1 '18 at 3:12
I'm facing the short-click trouble too. I'm using Kotlin and ParcelableStorage for the item key and everything is working fine but the simple click listener event. How did you solve this?
– Jose Ricardo Citerio Alcala
Jan 2 at 2:17
1.
withOnContextClickListener is not for long-click 2.your getItemDetails returns a new instance every time. Can you paste the entire code?– wangqi060934
Jun 1 '18 at 3:12
1.
withOnContextClickListener is not for long-click 2.your getItemDetails returns a new instance every time. Can you paste the entire code?– wangqi060934
Jun 1 '18 at 3:12
I'm facing the short-click trouble too. I'm using Kotlin and ParcelableStorage for the item key and everything is working fine but the simple click listener event. How did you solve this?
– Jose Ricardo Citerio Alcala
Jan 2 at 2:17
I'm facing the short-click trouble too. I'm using Kotlin and ParcelableStorage for the item key and everything is working fine but the simple click listener event. How did you solve this?
– Jose Ricardo Citerio Alcala
Jan 2 at 2:17
add a comment |
4 Answers
4
active
oldest
votes
I recently started looking at this library and got stuck on the same exception. The problem occurs when the SelectionTracker attempts to get an id from your custom RecyclerView.Adapter subclass. To fix the problem, first call setHasStableIds(true) in its constructor. Then override getItemId() to return an id for the given position parameter.
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
This should be the right answer
– A. Petrov
Nov 20 '18 at 6:25
add a comment |
New library looks complicated for now, indeed. I would wait the new final version before starting to implement over it. Surely, you can experiment with it, but I suggest you not use it in your app for now.
There's only one nice, new feature: the continuous multi-selection by moving the finger or mouse.
However, I found these examples:
- https://github.com/Thumar/recyclerview-selection
- https://github.com/guenodz/recyclerview-selection-demo
- https://medium.com/@Dalvin/android-recycler-view-with-multiple-item-selections-b2af90eb5825
In the meantime, I strongly suggest to use a library like mine: FlexibleAdapter which comes from more than 3 years of "selection experience", where it does NOT bind the item when (de)selection occurs! The multi-selection is simple to use with an ActionModeHelper to simplify your code with the ActionMode. Read the related Wiki page.
Currently, the selection is saved in a Set, but it might be delegated to the adapter item itself in the future. However, you can use 'selections' with this extension.
edited May 20 '18 at 23:24
fmw42
7,65841427
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
add a comment |
The selection package is still in alpha, the documentation is quite poor and it's not really clear how to use it. I tried myself but I had similar problems, at the end I used the SmartRecyclerView
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
nowadays (from Sep, 2018), it has a stable 1.0.0 release
– A. Petrov
Nov 20 '18 at 8:53
add a comment |
Two things:
1) to reach the click on items, you need to implement an OnItemActivatedListener<K> listener and pass a reference to it onto the tracker builder. After that you can receive 'touches' on an items.
2) to show Contextual Action Bar menu different approach is required: you need to implement an SelectionTracker.SelectionObserver and pass it to the tracker after creation: tracker.addObserver(.... After that, you can receive a selection change events in that observer (via onSelectionChanged callback). For instance, when selection starts (!tracker.getSelection().isEmpty() => show CAB) and selection ends (tracker.getSelection().isEmpty() hide CAB).
If you want to control for single/multiple items selection, tracker must be supplemented with SelectionTracker.SelectionPredicate instance (via .withSelectionPredicate( builder method).
and also, as @Code-Apprentice suggests, you need to provide correct ID's from getItemId() while you construct an ItemDetailsLookup.ItemDetails provider (this eliminates an Exception).
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
Where does thegetItemId()method come from? It no longer exists in the RecyclerView Selection library in version1.1.0-alpha01.
– Edric
Dec 14 '18 at 3:23
@Edric, this method is came from an Adapter. Override it, and provide from it correct id's of an Adapter hosted items. If Adapter do not provide an Id's, SelectionTracker do not know what to do with selection events - it can not hook into an items.
– A. Petrov
Dec 14 '18 at 7:14
Typically, you need to provide the result fromAdapter'sgetItemId()via the overridden methodgetSelectionKey()ofItemDetailsLookup.ItemDetails. It is done while you write your ownViewHolderimplementation.
– A. Petrov
Dec 14 '18 at 7:23
add a comment |
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I recently started looking at this library and got stuck on the same exception. The problem occurs when the SelectionTracker attempts to get an id from your custom RecyclerView.Adapter subclass. To fix the problem, first call setHasStableIds(true) in its constructor. Then override getItemId() to return an id for the given position parameter.
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
This should be the right answer
– A. Petrov
Nov 20 '18 at 6:25
add a comment |
I recently started looking at this library and got stuck on the same exception. The problem occurs when the SelectionTracker attempts to get an id from your custom RecyclerView.Adapter subclass. To fix the problem, first call setHasStableIds(true) in its constructor. Then override getItemId() to return an id for the given position parameter.
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
This should be the right answer
– A. Petrov
Nov 20 '18 at 6:25
add a comment |
I recently started looking at this library and got stuck on the same exception. The problem occurs when the SelectionTracker attempts to get an id from your custom RecyclerView.Adapter subclass. To fix the problem, first call setHasStableIds(true) in its constructor. Then override getItemId() to return an id for the given position parameter.
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
I recently started looking at this library and got stuck on the same exception. The problem occurs when the SelectionTracker attempts to get an id from your custom RecyclerView.Adapter subclass. To fix the problem, first call setHasStableIds(true) in its constructor. Then override getItemId() to return an id for the given position parameter.
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
answered Nov 11 '18 at 18:18
Code-ApprenticeCode-Apprentice
47k1489171
47k1489171
This should be the right answer
– A. Petrov
Nov 20 '18 at 6:25
add a comment |
This should be the right answer
– A. Petrov
Nov 20 '18 at 6:25
This should be the right answer
– A. Petrov
Nov 20 '18 at 6:25
This should be the right answer
– A. Petrov
Nov 20 '18 at 6:25
add a comment |
New library looks complicated for now, indeed. I would wait the new final version before starting to implement over it. Surely, you can experiment with it, but I suggest you not use it in your app for now.
There's only one nice, new feature: the continuous multi-selection by moving the finger or mouse.
However, I found these examples:
- https://github.com/Thumar/recyclerview-selection
- https://github.com/guenodz/recyclerview-selection-demo
- https://medium.com/@Dalvin/android-recycler-view-with-multiple-item-selections-b2af90eb5825
In the meantime, I strongly suggest to use a library like mine: FlexibleAdapter which comes from more than 3 years of "selection experience", where it does NOT bind the item when (de)selection occurs! The multi-selection is simple to use with an ActionModeHelper to simplify your code with the ActionMode. Read the related Wiki page.
Currently, the selection is saved in a Set, but it might be delegated to the adapter item itself in the future. However, you can use 'selections' with this extension.
edited May 20 '18 at 23:24
fmw42
7,65841427
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
add a comment |
New library looks complicated for now, indeed. I would wait the new final version before starting to implement over it. Surely, you can experiment with it, but I suggest you not use it in your app for now.
There's only one nice, new feature: the continuous multi-selection by moving the finger or mouse.
However, I found these examples:
- https://github.com/Thumar/recyclerview-selection
- https://github.com/guenodz/recyclerview-selection-demo
- https://medium.com/@Dalvin/android-recycler-view-with-multiple-item-selections-b2af90eb5825
In the meantime, I strongly suggest to use a library like mine: FlexibleAdapter which comes from more than 3 years of "selection experience", where it does NOT bind the item when (de)selection occurs! The multi-selection is simple to use with an ActionModeHelper to simplify your code with the ActionMode. Read the related Wiki page.
Currently, the selection is saved in a Set, but it might be delegated to the adapter item itself in the future. However, you can use 'selections' with this extension.
edited May 20 '18 at 23:24
fmw42
7,65841427
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
add a comment |
New library looks complicated for now, indeed. I would wait the new final version before starting to implement over it. Surely, you can experiment with it, but I suggest you not use it in your app for now.
There's only one nice, new feature: the continuous multi-selection by moving the finger or mouse.
However, I found these examples:
- https://github.com/Thumar/recyclerview-selection
- https://github.com/guenodz/recyclerview-selection-demo
- https://medium.com/@Dalvin/android-recycler-view-with-multiple-item-selections-b2af90eb5825
In the meantime, I strongly suggest to use a library like mine: FlexibleAdapter which comes from more than 3 years of "selection experience", where it does NOT bind the item when (de)selection occurs! The multi-selection is simple to use with an ActionModeHelper to simplify your code with the ActionMode. Read the related Wiki page.
Currently, the selection is saved in a Set, but it might be delegated to the adapter item itself in the future. However, you can use 'selections' with this extension.
edited May 20 '18 at 23:24
fmw42
7,65841427
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
New library looks complicated for now, indeed. I would wait the new final version before starting to implement over it. Surely, you can experiment with it, but I suggest you not use it in your app for now.
There's only one nice, new feature: the continuous multi-selection by moving the finger or mouse.
However, I found these examples:
- https://github.com/Thumar/recyclerview-selection
- https://github.com/guenodz/recyclerview-selection-demo
- https://medium.com/@Dalvin/android-recycler-view-with-multiple-item-selections-b2af90eb5825
In the meantime, I strongly suggest to use a library like mine: FlexibleAdapter which comes from more than 3 years of "selection experience", where it does NOT bind the item when (de)selection occurs! The multi-selection is simple to use with an ActionModeHelper to simplify your code with the ActionMode. Read the related Wiki page.
Currently, the selection is saved in a Set, but it might be delegated to the adapter item itself in the future. However, you can use 'selections' with this extension.
edited May 20 '18 at 23:24
fmw42
7,65841427
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
edited May 20 '18 at 23:24
fmw42
7,65841427
edited May 20 '18 at 23:24
fmw42
7,65841427
edited May 20 '18 at 23:24
fmw42
7,65841427
7,65841427
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
answered May 1 '18 at 13:49
DavideasDavideas
2,00521840
2,00521840
add a comment |
add a comment |
The selection package is still in alpha, the documentation is quite poor and it's not really clear how to use it. I tried myself but I had similar problems, at the end I used the SmartRecyclerView
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
nowadays (from Sep, 2018), it has a stable 1.0.0 release
– A. Petrov
Nov 20 '18 at 8:53
add a comment |
The selection package is still in alpha, the documentation is quite poor and it's not really clear how to use it. I tried myself but I had similar problems, at the end I used the SmartRecyclerView
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
nowadays (from Sep, 2018), it has a stable 1.0.0 release
– A. Petrov
Nov 20 '18 at 8:53
add a comment |
The selection package is still in alpha, the documentation is quite poor and it's not really clear how to use it. I tried myself but I had similar problems, at the end I used the SmartRecyclerView
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
The selection package is still in alpha, the documentation is quite poor and it's not really clear how to use it. I tried myself but I had similar problems, at the end I used the SmartRecyclerView
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
answered Apr 7 '18 at 8:19
greywolf82greywolf82
11.4k123773
11.4k123773
nowadays (from Sep, 2018), it has a stable 1.0.0 release
– A. Petrov
Nov 20 '18 at 8:53
add a comment |
nowadays (from Sep, 2018), it has a stable 1.0.0 release
– A. Petrov
Nov 20 '18 at 8:53
nowadays (from Sep, 2018), it has a stable 1.0.0 release
– A. Petrov
Nov 20 '18 at 8:53
nowadays (from Sep, 2018), it has a stable 1.0.0 release
– A. Petrov
Nov 20 '18 at 8:53
add a comment |
Two things:
1) to reach the click on items, you need to implement an OnItemActivatedListener<K> listener and pass a reference to it onto the tracker builder. After that you can receive 'touches' on an items.
2) to show Contextual Action Bar menu different approach is required: you need to implement an SelectionTracker.SelectionObserver and pass it to the tracker after creation: tracker.addObserver(.... After that, you can receive a selection change events in that observer (via onSelectionChanged callback). For instance, when selection starts (!tracker.getSelection().isEmpty() => show CAB) and selection ends (tracker.getSelection().isEmpty() hide CAB).
If you want to control for single/multiple items selection, tracker must be supplemented with SelectionTracker.SelectionPredicate instance (via .withSelectionPredicate( builder method).
and also, as @Code-Apprentice suggests, you need to provide correct ID's from getItemId() while you construct an ItemDetailsLookup.ItemDetails provider (this eliminates an Exception).
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
Where does thegetItemId()method come from? It no longer exists in the RecyclerView Selection library in version1.1.0-alpha01.
– Edric
Dec 14 '18 at 3:23
@Edric, this method is came from an Adapter. Override it, and provide from it correct id's of an Adapter hosted items. If Adapter do not provide an Id's, SelectionTracker do not know what to do with selection events - it can not hook into an items.
– A. Petrov
Dec 14 '18 at 7:14
Typically, you need to provide the result fromAdapter'sgetItemId()via the overridden methodgetSelectionKey()ofItemDetailsLookup.ItemDetails. It is done while you write your ownViewHolderimplementation.
– A. Petrov
Dec 14 '18 at 7:23
add a comment |
Two things:
1) to reach the click on items, you need to implement an OnItemActivatedListener<K> listener and pass a reference to it onto the tracker builder. After that you can receive 'touches' on an items.
2) to show Contextual Action Bar menu different approach is required: you need to implement an SelectionTracker.SelectionObserver and pass it to the tracker after creation: tracker.addObserver(.... After that, you can receive a selection change events in that observer (via onSelectionChanged callback). For instance, when selection starts (!tracker.getSelection().isEmpty() => show CAB) and selection ends (tracker.getSelection().isEmpty() hide CAB).
If you want to control for single/multiple items selection, tracker must be supplemented with SelectionTracker.SelectionPredicate instance (via .withSelectionPredicate( builder method).
and also, as @Code-Apprentice suggests, you need to provide correct ID's from getItemId() while you construct an ItemDetailsLookup.ItemDetails provider (this eliminates an Exception).
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
Where does thegetItemId()method come from? It no longer exists in the RecyclerView Selection library in version1.1.0-alpha01.
– Edric
Dec 14 '18 at 3:23
@Edric, this method is came from an Adapter. Override it, and provide from it correct id's of an Adapter hosted items. If Adapter do not provide an Id's, SelectionTracker do not know what to do with selection events - it can not hook into an items.
– A. Petrov
Dec 14 '18 at 7:14
Typically, you need to provide the result fromAdapter'sgetItemId()via the overridden methodgetSelectionKey()ofItemDetailsLookup.ItemDetails. It is done while you write your ownViewHolderimplementation.
– A. Petrov
Dec 14 '18 at 7:23
add a comment |
Two things:
1) to reach the click on items, you need to implement an OnItemActivatedListener<K> listener and pass a reference to it onto the tracker builder. After that you can receive 'touches' on an items.
2) to show Contextual Action Bar menu different approach is required: you need to implement an SelectionTracker.SelectionObserver and pass it to the tracker after creation: tracker.addObserver(.... After that, you can receive a selection change events in that observer (via onSelectionChanged callback). For instance, when selection starts (!tracker.getSelection().isEmpty() => show CAB) and selection ends (tracker.getSelection().isEmpty() hide CAB).
If you want to control for single/multiple items selection, tracker must be supplemented with SelectionTracker.SelectionPredicate instance (via .withSelectionPredicate( builder method).
and also, as @Code-Apprentice suggests, you need to provide correct ID's from getItemId() while you construct an ItemDetailsLookup.ItemDetails provider (this eliminates an Exception).
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
Two things:
1) to reach the click on items, you need to implement an OnItemActivatedListener<K> listener and pass a reference to it onto the tracker builder. After that you can receive 'touches' on an items.
2) to show Contextual Action Bar menu different approach is required: you need to implement an SelectionTracker.SelectionObserver and pass it to the tracker after creation: tracker.addObserver(.... After that, you can receive a selection change events in that observer (via onSelectionChanged callback). For instance, when selection starts (!tracker.getSelection().isEmpty() => show CAB) and selection ends (tracker.getSelection().isEmpty() hide CAB).
If you want to control for single/multiple items selection, tracker must be supplemented with SelectionTracker.SelectionPredicate instance (via .withSelectionPredicate( builder method).
and also, as @Code-Apprentice suggests, you need to provide correct ID's from getItemId() while you construct an ItemDetailsLookup.ItemDetails provider (this eliminates an Exception).
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
edited Nov 20 '18 at 8:50
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
answered Nov 20 '18 at 8:41
A. PetrovA. Petrov
12616
12616
Where does thegetItemId()method come from? It no longer exists in the RecyclerView Selection library in version1.1.0-alpha01.
– Edric
Dec 14 '18 at 3:23
@Edric, this method is came from an Adapter. Override it, and provide from it correct id's of an Adapter hosted items. If Adapter do not provide an Id's, SelectionTracker do not know what to do with selection events - it can not hook into an items.
– A. Petrov
Dec 14 '18 at 7:14
Typically, you need to provide the result fromAdapter'sgetItemId()via the overridden methodgetSelectionKey()ofItemDetailsLookup.ItemDetails. It is done while you write your ownViewHolderimplementation.
– A. Petrov
Dec 14 '18 at 7:23
add a comment |
Where does thegetItemId()method come from? It no longer exists in the RecyclerView Selection library in version1.1.0-alpha01.
– Edric
Dec 14 '18 at 3:23
@Edric, this method is came from an Adapter. Override it, and provide from it correct id's of an Adapter hosted items. If Adapter do not provide an Id's, SelectionTracker do not know what to do with selection events - it can not hook into an items.
– A. Petrov
Dec 14 '18 at 7:14
Typically, you need to provide the result fromAdapter'sgetItemId()via the overridden methodgetSelectionKey()ofItemDetailsLookup.ItemDetails. It is done while you write your ownViewHolderimplementation.
– A. Petrov
Dec 14 '18 at 7:23
Where does the
getItemId() method come from? It no longer exists in the RecyclerView Selection library in version 1.1.0-alpha01.– Edric
Dec 14 '18 at 3:23
Where does the
getItemId() method come from? It no longer exists in the RecyclerView Selection library in version 1.1.0-alpha01.– Edric
Dec 14 '18 at 3:23
@Edric, this method is came from an Adapter. Override it, and provide from it correct id's of an Adapter hosted items. If Adapter do not provide an Id's, SelectionTracker do not know what to do with selection events - it can not hook into an items.
– A. Petrov
Dec 14 '18 at 7:14
@Edric, this method is came from an Adapter. Override it, and provide from it correct id's of an Adapter hosted items. If Adapter do not provide an Id's, SelectionTracker do not know what to do with selection events - it can not hook into an items.
– A. Petrov
Dec 14 '18 at 7:14
Typically, you need to provide the result from
Adapter's getItemId() via the overridden method getSelectionKey() of ItemDetailsLookup.ItemDetails. It is done while you write your own ViewHolder implementation.– A. Petrov
Dec 14 '18 at 7:23
Typically, you need to provide the result from
Adapter's getItemId() via the overridden method getSelectionKey() of ItemDetailsLookup.ItemDetails. It is done while you write your own ViewHolder implementation.– A. Petrov
Dec 14 '18 at 7:23
add a comment |
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1.
withOnContextClickListeneris not for long-click 2.yourgetItemDetailsreturns a new instance every time. Can you paste the entire code?– wangqi060934
Jun 1 '18 at 3:12
I'm facing the short-click trouble too. I'm using Kotlin and ParcelableStorage for the item key and everything is working fine but the simple click listener event. How did you solve this?
– Jose Ricardo Citerio Alcala
Jan 2 at 2:17