How does one register a ListView for a context menu when using a custom ListView based on BaseAdapter?
I tried registerForContextMenu(getListView());, but this doesn't seem to work. I'm using ListView14.java from API Demos.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new EfficientAdapter(this));
registerForContextMenu(getListView());
}
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.tag_context_menu, menu);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()) {
case R.id.tagView:
// editNote(info.id);
return true;
case R.id.tagRename:
// deleteNote(info.id);
return true;
case R.id.tagDelete:
// deleteNote(info.id);
return true;
default:
return super.onContextItemSelected(item);
}
}
Instead of using registerForContextMenu(getListView()), try naming your listview in onCreate and using that reference:
Listview myListView = (Listview) findViewById(R.id.myListView); //or use any other constructor
registerForContextMenu(myListView);
This works for all the items in my adapter-fed Gridview (although it's turning out to be impossible to then properly adding a contextmenu to the gridview itself which registers longclicks on the empty gridview items, but that's another story altogether :) ), and I'd imagine a Listview to work the same.
Related
So, I know we need to pass a view to openContextMenu(view); but where can i get the view for Menuitem, please have a look at my code. Thanks in advance.
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_activity_actions, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.actionmenu:
openContextMenu(item); //I dont know what to pass here
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("Select The Action");
menu.add(0, 0, 11, "Edit");
menu.add(0, 1, 12, "Delete");
}
#Override
public boolean onContextItemSelected(MenuItem item) {
System.out.println(item.getItemId());
return super.onContextItemSelected(item);
}
1. Register a view for a floating context menu
By default, a long-press on a view does not trigger the creation of a context menu.
You must register a view for a floating context menu by calling the following method,
a listview for example:
ListView listView = (ListView) v.findViewById(android.R.id.list);
registerForContextMenu(listView);
2. Create resource xml file
You'd better to create a xml resource file that contains the context menu item:
your_context.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="#+id/context_menu_eidt"
android:title="Edit" />
<item android:id="#+id/context_menu_delete"
android:title="Delete" />
</menu>
3. Inflate the resouce to build context menu
Then inflate the resource file in onCreateContextMenu method,
the parameter #v is the view that the context menu is being built for:
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
if (v.getId() == android.R.id.list) {
Log.d(TAG, "get the view here");
}
getActivity().getMenuInflater().inflate(R.menu.your_context, menu);
}
4. Do something when menu item selected
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
int position = info.position;
switch (item.getItemId()) {
case R.id.context_menu_eidt:
// TODO
return true;
case R.id.context_menu_delete:
// TODO
return true;
}
return super.onContextItemSelected(item);
}
That's all.
I am developing an android application.I will have a listview and i have set a context menu to appear when a listview item is long-pressed.How do i get the item from the listview item selected(say text from a listview textview) after an action from the contextmenu is chosen so i can process it?
Here is some code:
protected void onCreate(Bundle savedInstanceState) {
-------
lv1 = (ListView) findViewById(R.id.listings);
registerForContextMenu(lv1);
lv1.setOnItemClickListener(this);
}
And the onCreateContextMenu:
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.context_menu, menu);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item
.getMenuInfo();
switch (item.getItemId()) {
case R.id.watch:
String name = "";
return true;
case R.id.buy:
return true;
default:
return super.onContextItemSelected(item);
}
}
I want to get text from a textview in a list item.How do i achieve that?
To get the item from the ListView item selected refer to ContextMenuInfo object (see last implemented method below). Full solution as follows:
1) register ListView for context menu in ListActivity class
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// ...
getListView().setAdapter(mAdapter);
registerForContextMenu(getListView());
}
1a) if you have complex View on your list you might need to enable long click on each list view in Adapter class
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
RelativeLayout layout = (RelativeLayout) LayoutInflater.from(mContext).inflate(R.layout.list_item, parent, false);
itemLayout = layout;
itemLayout.setLongClickable(true);
}
// ...
return view;
}
2) implement onCreateContextMenu() and onContextItemSelected() in ListActivity class
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
String title = ((MyItem) mAdapter.getItem(info.position)).getTitle();
menu.setHeaderTitle(title);
menu.add(Menu.NONE, MENU_CONTEXT_DELETE_ID, Menu.NONE, DELETE_TEXT);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_CONTEXT_DELETE_ID:
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
Log.d(TAG, "removing item pos=" + info.position);
mAdapter.remove(info.position);
return true;
default:
return super.onContextItemSelected(item);
}
}
The problem was the onItemLongClick() method, do not use it for context menu.
Instead, register the LISTVIEW for the context menu.
Here's the source.
for onCreate():
registerForContextMenu(lv);
And to access the selected item during long click:
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
if (v.getId() == R.id.lv) {
ListView lv = (ListView) v;
AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
YourObject obj = (YourObject) lv.getItemAtPosition(acmi.position);
menu.add("One");
menu.add("Two");
menu.add("Three");
menu.add(obj.name);
}
}
1) First we use
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.add("View Selected Text");
}
2)
list--is ref if ListView
registerForContextMenu(list);
3)
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
if(item.getTitle().equals("View Selected Text"))
{
AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) item.getMenuInfo();
Contact c=array.get(menuInfo.position);
Toast.makeText(List.this, "Selected String is :-"+c.toString(), Toast.LENGTH_SHORT).show();
}
}
first get list using id
Context context = getApplicationContext();
ComponentName component = new ComponentName(context.getPackageName(), TestReplaceHomeAppActivity.class.getName());
String packname = context.getPackageName();
Intent LaunchIntent = getActivity().getPackageManager().getLaunchIntentForPackage(packageName);
if(LaunchIntent != null){
startActivity(LaunchIntent);
}
else {
Toast.makeText(getActivity().getBaseContext(),"APPLICATION IN NOT AVAILABEL", Toast.LENGTH_SHORT).show();
}
Write this in your longPressListener with the listview you use:
ListView list = (ListView) findViewById(android.R.id.list);
registerForContextMenu(list);
And this are the methods:
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
Adapter adapter = getListAdapter();
Object item = adapter.getItem(info.position);
menu.setHeaderTitle("Choose");
menu.add(0, v.getId(), 0, "Delete");
}
#Override
public boolean onContextItemSelected(MenuItem item) {
if (item.getTitle() == "Delete") {
deleteContact(item.getItemId());
} else if (...) {
// code
} else {
return false;
}
return true;
}
public void deleteContact(int id){
// your code what to do for the clicked item
}
use these methods, onCreateContextMenu and onContextItemSelected\
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
if (v.getId() == R.id.listview) {
menu.setHeaderTitle("Delete");
menu.add(Menu.NONE, 0, 0, "Delete from list");
}
}
/**
* Responding to context menu selected option
* */
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item
.getMenuInfo();
int menuItemIndex = item.getItemId();
// check for selected option
if (menuItemIndex == 0) {
// user selected delete
// delete the listrow
..(in your onitemclicklistener there is a parameter called as'postition' use this position and use some method to delete the data corresponding to the position value )
// reloading same activity again
Intent intent = getIntent();
finish();
startActivity(intent);
}
return true;
}
The above answers are very accurate and to the point for the case provided. That being said, I was brought here with using a convertView for my listview and am answering for those who are also brought here with this case.
If your LISTVIEW is using convertView and inflating a separate layout (say list_MyItem.xml), directly modify the list_MyItem.xml to have:
android:longClickable="true"
For example, if the listview is being populated with buttons modify the button as such:
<Button
android:id="#+id/myButton"
.
.
.
android:longClickable="true"
/>
I am developing an android application.I will have a listview and i have set a context menu to appear when a listview item is long-pressed.How do i get the item from the listview item selected(say text from a listview textview) after an action from the contextmenu is chosen so i can process it?
Here is some code:
protected void onCreate(Bundle savedInstanceState) {
-------
lv1 = (ListView) findViewById(R.id.listings);
registerForContextMenu(lv1);
lv1.setOnItemClickListener(this);
}
And the onCreateContextMenu:
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.context_menu, menu);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item
.getMenuInfo();
switch (item.getItemId()) {
case R.id.watch:
String name = "";
return true;
case R.id.buy:
return true;
default:
return super.onContextItemSelected(item);
}
}
I want to get text from a textview in a list item.How do i achieve that?
To get the item from the ListView item selected refer to ContextMenuInfo object (see last implemented method below). Full solution as follows:
1) register ListView for context menu in ListActivity class
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// ...
getListView().setAdapter(mAdapter);
registerForContextMenu(getListView());
}
1a) if you have complex View on your list you might need to enable long click on each list view in Adapter class
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
RelativeLayout layout = (RelativeLayout) LayoutInflater.from(mContext).inflate(R.layout.list_item, parent, false);
itemLayout = layout;
itemLayout.setLongClickable(true);
}
// ...
return view;
}
2) implement onCreateContextMenu() and onContextItemSelected() in ListActivity class
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
String title = ((MyItem) mAdapter.getItem(info.position)).getTitle();
menu.setHeaderTitle(title);
menu.add(Menu.NONE, MENU_CONTEXT_DELETE_ID, Menu.NONE, DELETE_TEXT);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_CONTEXT_DELETE_ID:
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
Log.d(TAG, "removing item pos=" + info.position);
mAdapter.remove(info.position);
return true;
default:
return super.onContextItemSelected(item);
}
}
The problem was the onItemLongClick() method, do not use it for context menu.
Instead, register the LISTVIEW for the context menu.
Here's the source.
for onCreate():
registerForContextMenu(lv);
And to access the selected item during long click:
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
if (v.getId() == R.id.lv) {
ListView lv = (ListView) v;
AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
YourObject obj = (YourObject) lv.getItemAtPosition(acmi.position);
menu.add("One");
menu.add("Two");
menu.add("Three");
menu.add(obj.name);
}
}
1) First we use
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.add("View Selected Text");
}
2)
list--is ref if ListView
registerForContextMenu(list);
3)
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
if(item.getTitle().equals("View Selected Text"))
{
AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) item.getMenuInfo();
Contact c=array.get(menuInfo.position);
Toast.makeText(List.this, "Selected String is :-"+c.toString(), Toast.LENGTH_SHORT).show();
}
}
first get list using id
Context context = getApplicationContext();
ComponentName component = new ComponentName(context.getPackageName(), TestReplaceHomeAppActivity.class.getName());
String packname = context.getPackageName();
Intent LaunchIntent = getActivity().getPackageManager().getLaunchIntentForPackage(packageName);
if(LaunchIntent != null){
startActivity(LaunchIntent);
}
else {
Toast.makeText(getActivity().getBaseContext(),"APPLICATION IN NOT AVAILABEL", Toast.LENGTH_SHORT).show();
}
Write this in your longPressListener with the listview you use:
ListView list = (ListView) findViewById(android.R.id.list);
registerForContextMenu(list);
And this are the methods:
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
Adapter adapter = getListAdapter();
Object item = adapter.getItem(info.position);
menu.setHeaderTitle("Choose");
menu.add(0, v.getId(), 0, "Delete");
}
#Override
public boolean onContextItemSelected(MenuItem item) {
if (item.getTitle() == "Delete") {
deleteContact(item.getItemId());
} else if (...) {
// code
} else {
return false;
}
return true;
}
public void deleteContact(int id){
// your code what to do for the clicked item
}
use these methods, onCreateContextMenu and onContextItemSelected\
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
if (v.getId() == R.id.listview) {
menu.setHeaderTitle("Delete");
menu.add(Menu.NONE, 0, 0, "Delete from list");
}
}
/**
* Responding to context menu selected option
* */
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item
.getMenuInfo();
int menuItemIndex = item.getItemId();
// check for selected option
if (menuItemIndex == 0) {
// user selected delete
// delete the listrow
..(in your onitemclicklistener there is a parameter called as'postition' use this position and use some method to delete the data corresponding to the position value )
// reloading same activity again
Intent intent = getIntent();
finish();
startActivity(intent);
}
return true;
}
The above answers are very accurate and to the point for the case provided. That being said, I was brought here with using a convertView for my listview and am answering for those who are also brought here with this case.
If your LISTVIEW is using convertView and inflating a separate layout (say list_MyItem.xml), directly modify the list_MyItem.xml to have:
android:longClickable="true"
For example, if the listview is being populated with buttons modify the button as such:
<Button
android:id="#+id/myButton"
.
.
.
android:longClickable="true"
/>
I'm doing a proyect where i have a view with multiple listview created at runtime, every listview load specifics rows of a database. and i want to implement a contextmenu. The problem is how can i get the row of the listview to retieve the id of the database? How can i get my list adapter inside the contextmenu ? or some other solution. Thanks!
here is a part of the code...
private void makeView(){
yearsArray = db.getUniqueYears(TABLE_NAME);
for (int i = 0; i < yearsArray.size() ; i++){
list = db.getDocByYear(TABLE_NAME, yearsArray.get(i));
custom_adapter = new Document_adapter(this, list);
ListView lv = new ListView(this);
lv.setAdapter(custom_adapter);
lv.setBackgroundResource(R.drawable.title_container_bg);
registerForContextMenu(lv);
}
}
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater mi = getMenuInflater();
mi.inflate(R.menu.doc_options, menu);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
/*
*/
return super.onContextItemSelected(item);
}
If you set your database up properly you can just do this info.id; in your onContextItemSelected and that gives the database id
I have a CustomListAdapter. I have overloaded my OnItemClickListener and added a registerForContextMenu line for the position that i have a context menu shown.
When i select the Item that should show the MenuItem, the menu is shown. When i press the back button on the phone the menu disappears. However now what happens that the same Item in my listview does not receive the OnItemClickListener anymore. Am i making sense ? I mean after the menu disappears, the same item does not receive the click listener. The items above and below receive the event as desired. I seems as if the Menu has disappeared but still is catching the click event ?
It's bad. You have to call registerForContextMenu in onCreate method.
So try it like this:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contacts);
registerForContextMenu(<yourListView>);
...
}
for create ContextMenu you have to override onCreateContextMenu method
#Override
public void onCreateContextMenu(ContextMenu cMenu, View parent, ContextMenu.ContextMenuInfo info) {
this.contextMenu = cMenu;
new MenuInflater(Contacts.this).inflate(R.menu.conmenu, this.contextMenu);
}
and for select items override onContextItemSelected method:
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()) {
case R.id.c_odobrat:
deleteContactDialog(info.id);
return true;
}
return false;
}
And it should works.
quickLinkListView.setOnItemClickListener(new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> a, View v, int position, long id)
{
Intent intent = new Intent();
intent.setClassName(Home.this, "com.myapp.toc" + Constants.ACT_NAMES[position]);
if (position < 4 && position > 1)
{
switch (position)
{
case 3:
registerForContextMenu(v);
ViewHolder.v=v;
openContextMenu(v);
break;
}
}
}
});
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.context_home, menu);
menu.setHeaderTitle("Select Video Type");
}