I am using android built in layout android.R.layout.simple_list_item 2. I wanted to perform onItemclicklistner() for the items in this layout. I couldn't find the resource id for this layout without which I couldn't find a way to perform the listner function. The examples I have seen so far is
ListView list = (ListView) findViewById(R.id.mylist); // Since I am using built in layout I couldn't figure out the resourse id as in this case.
list.setOnItemClicklistner();
So my problem is without knowing the resourse id of the built in layout "simple_list_item 2" how can I create a Listview object. and without having a ListView Object I am unable to access setOnItemClickListner(). Hope I delivered the question in a meaningful way. Thanks
Use setOnItemClickListener() instead of setOnClickListener()
If you want to perform clicks on items in the ListView, try using OnItemClickListener in place of OnClickListener. The OnItemClickListener can be set on the ListView as shown below.
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
// Perform the required tasks here
}
});
for list item click u should set onItemClickListener like below
listview.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> a, View v, int position,
long id) {
}
});
also you can set onItemClickListener Interface to your Activity and override method in activity
use setonItemClickListner();
listview.setOnItemClickListner(new OnItemClick(){});
Related
I have a listview binded to an arrayadapter of strings... How do i set different clicklistener on each item in the list view
Register an item click listener on your ListView with http://developer.android.com/reference/android/widget/AdapterView.html#setOnItemClickListener(android.widget.AdapterView.OnItemClickListener)
In your AdapterView.OnItemClickListener#onItemClick you will get the view and an id.
You can use the id if you have a given order in your arraylist, or you could use View#findViewById and get the content of the view to figure out which item it is.
That means, you would not set a listener per item, rather you would have one listener for all items, and then do different things based on which item it was.
I think you could use it like this.
adapter = new ArrayAdapter(getContext(), R.layout.list_item_forecast, R.id.list_item_forecast_textView, new ArrayList<String>());
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//what ever you want to give on item click
}
});
here by checking the position inside onItemClick you can assign specific tasks.
I'm using notifyDataSetChanged with my custom GridViewAdapter which updates the listView however when I click on something with my updated listView, the old links are still there. I have the following ClickListener in my onCreate method.
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent = new Intent(getBaseContext(), SpiceList.class);
intent.putExtra("INGREDIENTS_CALL", true);
intent.putExtra("INGREDIENTS_SELECTED", position + 1);
if (recipeCall) {
intent.putExtra("RECIPE_CALL", true);
}
startActivity(intent);
}
});
I've tried duplicating this inside the buttons that update the listView but this does not work. Any ideas for how I can best update my listener to reflect my changed listView?
Thanks! :)
Not sure if i understand your question but let me see if i can try. You are changing the listviews views when you click on one?
Are you deleting any element in the array or List you are using for your adapter? So you remove an item and then call notifyDataSetChange()? or you add an item to the array and call the notify method?
Turns out the problem was in the way I was retrieving my SQL queries. I was making the position of my listener equal to the ID of the SQL entry I was retrieving. Therefore, even though my list changed, item 1 was still pulling SQL items with an ID of 1.
When I designed my queries in Android, I originally did not expect that I would run into this problem. However, now I've linked my SQL queries to the actual item ID and not the listener position. My new listener is now:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent = new Intent(getBaseContext(), SpiceList.class);
intent.putExtra("INGREDIENTS_CALL", true);
intent.putExtra("INGREDIENTS_SELECTED", Integer.parseInt(resultsID.get(position)));
if (recipeCall) {
intent.putExtra("RECIPE_CALL", true);
}
startActivity(intent);
}
});
Thanks for your help!
I will sound stupid to most of you by asking this, but I haven't been able to figure it out on my own and can't pass to my next task until I found an answer.
So far I have downloaded the LazyList project from https://github.com/thest1/LazyList made by Fedor, I'm trying to understand how it works so I can implement it on my own project. My problem is that I don't know where to implement the onitemclicklistener part:
AdapterView.OnItemClickListener onitemClick = new AdapterView.OnItemClickListener()public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
noteId= //the item id from the list
Toast.makeText(getApplicationContext(), noteId, 2000).show();
}
I have try to add it on my mainActivity but then I can't find how to connect to my LazyAdapter to find the item id to be displayed in a toast. My project will contain some other information in the list (as a table several columns) so I want to be able to access an specific columns from that rows using the item id. and testing with a simple toast will help.
Thanks, I hope you don't laugh to much and help me a little.
I think you are going about it in the wrong manner: AdapterView.OnItemClickListener is an interface and the onItemClick() method takes four parameters... I assume this is what you are trying to do:
ListView listView = (ListView) findViewById(R.id.list);
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getApplicationContext(), id + "", 2000).show();
}
});
I'm developing an app and I have one ListActivity, which has choice mode set to choice_mode_multiple. now i want to override method, which is called when one item is checked/unchecked, and I've found out that onCheckChanged() method is implemented only for RadioGroup and compund Button. how can I override something like this in ListActivity? or do I have to implement my own Adapter? thanks
Set onlistitemclick listener to listview , then in itemclick method you can get mylistView.getCheckedItemCount() , write the code of the operation to be performed.
If this is not clear let me know what you want to implement when item is checked.
mylistView = (ListView)customView.findViewById(R.id.mylist);
mylistView.setAdapter(mFolderAdapter);
mylistView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
mylistView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View v,
int arg2, long arg3) {
// TODO Auto-generated method stub
if(mylistView.isItemChecked(arg2)){
//Dooperation
}
// or
if(mylistView.getCheckedItemCount()>1){
//Dooperation
}
}
});
Use isItemChecked (int position) or setItemChecked(int position, boolean value) if you using standart array adapter and SINGLE or MULTIPLE choise mode. http://developer.android.com/reference/android/widget/AbsListView.html#isItemChecked(int)
Also you can create your custom adapter and inflate row layout with checkbox that can hold onClickListener and CheckedChangedListener.
Use search to find example.
Up front: This is my first attempt at an Android app. I'm in that strange place of not knowing what to search for to find the answer to my question.
What I have accomplished is:
Created a custom class myCustomClass with properties of 'title' and 'youTubeUrl'
Created an ArrayList<myCustomClass>
Added multiple elements to ArrayList<myCustomClass>
Created a custom ArrayAdapter and attached it to the the arraylist.
Added an onItemClickListener to the custom ArrayAdapter.
All of that works good. I would like to show the title in the ListView and then when the user clicks the list view item, I'd like to get a reference to the youtubeUrl property.
Here's what I have for the adapter code:
MyListAdapter myListAdapter = new MyListAdapter(this, R.layout.my_list, elements);
myList.setAdapter(myListAdapter);
myList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String item = ((TextView)view).getText().toString();
Toast.makeText(getBaseContext(), item, Toast.LENGTH_LONG).show();
}
});
myListAdapter.notifyDataSetChanged();
Thanks for your help.
You can use the position property in onItemClick to go back to your data source and find the relevant item. From there you should be able to retrieve the Url.
As another poster implied, it depends on what you are using in your adapter. Assuming it's MyCustomClass. You can do something like this in your onItemClick method:
MyCustomClass selection = (MyCustomClass) getListView().getItemAtPosition(position);