How do I listen to click event on a ListView?
This is what I have now
ListView list = (ListView)findViewById(R.id.ListView01);
...
list.setAdapter(adapter);
When I do the following
list.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView parentView, View childView,
int position, long id)
{
setDetail(position);
}
public void onNothingSelected(AdapterView parentView) {
}
});
That doesn't seem to do anything on click.
And all those code live within a class that extends Activity.
On your list view, use setOnItemClickListener
Suppose ListView object is lv, do the following-
lv.setClickable(true);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
Object o = lv.getItemAtPosition(position);
/* write you handling code like...
String st = "sdcard/";
File f = new File(st+o.toString());
// do whatever u want to do with 'f' File object
*/
}
});
You need to set the inflated view "Clickable" and "able to listen to click events" in your adapter class getView() method.
convertView = mInflater.inflate(R.layout.list_item_text, null);
convertView.setClickable(true);
convertView.setOnClickListener(myClickListener);
and declare the click listener in your ListActivity as follows,
public OnClickListener myClickListener = new OnClickListener() {
public void onClick(View v) {
//code to be written to handle the click event
}
};
This holds true only when you are customizing the Adapter by extending BaseAdapter.
Refer the ANDROID_SDK/samples/ApiDemos/src/com/example/android/apis/view/List14.java for more details
The two answers before mine are correct - you can use OnItemClickListener.
It's good to note that the difference between OnItemClickListener and OnItemSelectedListener, while sounding subtle, is in fact significant, as item selection and focus are related with the touch mode of your AdapterView.
By default, in touch mode, there is no selection and focus.
You can take a look here for further info on the subject.
This solution is really minimalistic and doesn't mess up your code.
In your list_item.xml (NOT listView!) assign the attribute android:onClick like this:
<RelativeLayout android:onClick="onClickDoSomething">
and then in your activity call this method:
public void onClickDoSomething(View view) {
// the view is the line you have clicked on
}
You have to use setOnItemClickListener someone said.
The code should be like this:
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// When clicked, show a toast with the TextView text or do whatever you need.
Toast.makeText(getApplicationContext(), ((TextView) view).getText(), Toast.LENGTH_SHORT).show();
}
});
First, the class must implements the click listenener :
implements OnItemClickListener
Then set a listener to the ListView
yourList.setOnItemclickListener(this);
And finally, create the clic method:
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Toast.makeText(MainActivity.this, "You Clicked at " +countries[+ position], Toast.LENGTH_SHORT).show();
}
you can take a look and download code here
Use setOnItemClickListener() api in your activity. Following is the sample.
listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){
#Override
public void onItemClick(AdapterView<> parent, View view, int position, long id)
{
// your code here.
}
});
In Kotlin, add a listener to your listView as simple as java
your_listview.setOnItemClickListener { parent, view, position, id ->
Toast.makeText(this, position, Toast.LENGTH_SHORT).show()
}
Related
I'm trying to get an AutoCompleteTextView's ID after I clicked a value on the list. Tried looking up on google and stackoverflow, but the provided answers didn't work. Here's what I've got:
Created the view in my class declaration:
public class ActivityCadastrarCliente extends Activity implements OnClickListener, OnItemClickListener {
AutoCompleteTextView E_Nome_Cliente, E_CPF;
List<String> Nomes = new ArrayList<String>();
...
Associated the view to an XML element:
E_Nome_Cliente = (AutoCompleteTextView)findViewById(R.id.Nome_Cliente);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, Nomes.toArray(new String[0]));
E_Nome_Cliente.setAdapter(adapter);
E_Nome_Cliente.setOnItemClickListener(this);
and my onItemClick method is called normally as below:
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//switch (parent.getId()) {
//case R.id.Nome_Cliente:
...
//}
}
Does anybody know how I can access this view inside onItemClick? Tried several ways, but I only get exceptions:
//Class cast exception
AutoCompleteTextView input = (AutoCompleteTextView)view.getParent();
//Class cast exception
AutoCompleteTextView input = (AutoCompleteTextView)parent;
//Class cast exception
AutoCompleteTextView input = (AutoCompleteTextView)parent.getParent();
I need to identify which view was clicked, because I'm using 3 to 5 AutoCompleteTextView and based on the selected value I'll automatically fill in a bunch of other fields.
Have a look at the class AutoCompleteTextViewClickListener in this answer.
Change your setOnItemClickListener call in the following way:
E_Nome_Cliente.setOnItemClickListener(
new AutoCompleteTextViewClickListener(E_Nome_Cliente, this));
Now you can get the id by accessing the modified view parameter:
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//view had been modified by AutoCompleteTextViewClickListener
//to contain the original AutoCompleteTextView
switch (view.getId()) {
case R.id.Nome_Cliente:
//...
}
}
An easier way:
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Adapter adapter = parent.getAdapter();
if (adapter == autoCompleteTextView1.getAdapter()) {
// Do something
} else if (adapter == autoCompleteTextView2.getAdapter()) {
// Do something else
}
}
i am not sure what do you mean by view id? do you want to get the selected value?
if yes, then the below code will do it, otherwise please clarify more what do you need and why you want to access the view itself.
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//switch (parent.getId()) {
String selected = adapter.getItem(position);
//}
}
more on adapter methods are here
Use parent.findViewById(R.id.id_of_autocompleteTextView) on the parent of the AutoCompleteTextView.
I have a ListView and I am trying to handle the click event on list of items via the following code
listView.setOnClickListener(new OnItemClickListener() {
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();
}
}
But I am getting compile time error which is as following
The method setOnClickListener(View.OnClickListener) in the type AdapterView<ListAdapter> is not applicable for the arguments (new AdapterView.OnItemClickListener(){})
How can this error be resolved ?
Use setOnItemClickListener() to set a listener for item clicks. setOnClickListener() would register a regular View.OnClickListener on the ListView widget itself.
Replace setOnClickListener by setOnItemClickListener :-)
use setOnItemClickListener()
listview.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
String item = (String)adapter.getItemAtPosition(position);
}
});
Use setOnItemClickListener instead of setOnClickListener
adding onClickListener to views in the getView() method is using when
you have 2 or more views that should have their own onClickListener,so
for your is better onItemClickListener
i.e. rewrite your code as
listView.setOnItemClickListener(new OnItemClickListener() {
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();
}
}
For more info see
Which: ListView.setOnItemClickListener or TextView.setOnClickListener?
I'm just learning how to use ListViews. I got it working, but wont to be able to respond when some one clicks a item.
I'm trying to use the setOnItemClickListener method to take a call back for when a item is clicked on. But my code will not compile due to errors in method setOnItemClickListener
r
Right now i get a error that says
setOnItemClickListener is not applicable for arguments OnItemClickListener();
void SetUpList()
{
listView = (ListView) findViewById(R.id.mylist);
String[] values = new String[] { "Android", "iPhone", "WindowsMobile"};
EventsAdapter adapter = new EventsAdapter(this, cGlobals.eventsTitle);
// Assign adapter to ListView
listView.setAdapter(adapter);
// this is whare I get the error listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
}
});
}
}
First make sure you have imported this class:
import android.widget.AdapterView.OnItemSelectedListener;
Next you need to call setOnItemClickListener() like so:
listView.setOnItemClickListener(new OnItemClickListener() {
#Override // "#Override" is required for Java 1.6, but forbidden in 1.5
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Do Something
}
});
Or if your activity implements OnItemClickListener: You need to add the onItemClick() method outside your onCreate() method:
#Override
public void onCreate(Bundle savedInstanceState) {
// Do Something
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Do something else
}
(Of course, if you are extending a ListActivity or ListFragment you should override onListItemClick() instead of onItemClick() like the second approach.)
How am I to set an OnItemClickListener event for a Listview if I'm not extending ListActivity class?
Can someone provide me with an example please?
Hope you have a list view in the activity that you are using....
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent,
View view,
int position,
long id) {
// Whatever you want to do.
}
});
Is that what you are looking for?
I'd like to have both type of clicks on a listView - onClick and LongClick.
I've implemented it like this:
this.listViewSub = (ListView) this.findViewById(R.id.listsub);
this.listViewSub.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(final AdapterView parent, final View view, final int position,
final long id) { ... } });
// listen to long click - to share texts
this.listViewSub.setOnLongClickListener(new OnLongClickListener() {
#Override
public boolean onLongClick(View v) { ... } });
But it does't fire the Long Click.
Anyone has any idea why?
You have to enable the LongClickable
list.setLongClickable(true);
and
list.setOnItemLongClickListener(new OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
final int arg2, long arg3) {
}
});
#Vadim, are your listview's adapter is extends from BaseAdapter? if yes, then also need to set convertView.setLongClickable(true); in the getView().
For me, I had to set android:longClickable="true" in the XML file that contains my ListView row layout (not ListView layout) for the item to be long-clickable.
onLongClick returns true if the callback consumed the long click, false otherwise. So if the event is handled by this method, return true.