Listactivity : is there a onFocus method ?

Lex · by **Lex** » Sat Dec 15, 2007 1:59 am

Hi everyone,
I'm using a ListActivity,
I'd like to display a showAlert everytime an item of the list is focused ( and I dont mean CLICKED ! ).
There is a onListItemClick method, but it's used when the item is clicked ! How would u do to make an action when an item is focused ?
Thank you.

plusminus · by **plusminus** » Sat Dec 15, 2007 2:53 pm

Hey Lex,

the following code-snippet does what you want to achive:

I placed in the onCreate(...)-method of the ListActivity:

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        this.getListView().setOnItemSelectedListener(new OnItemSelectedListener(){
                        @Override
                        public void onItemSelected(AdapterView parent, View v,
                                        int position, long id) {
                                showAlert("Selection Changed...", "Position: " + position, "OK", false);
                        }
 
                        @Override
                        public void onNothingSelected(AdapterView arg0) {
                                // Do Nothing
                        }
        });
Parsed in 0.031 seconds,  using GeSHi 1.0.8.4

Did it help you :?:

Regards,
plusminus

Lex · by **Lex** » Sun Dec 16, 2007 8:04 pm

It doesn't work, OnItemSelectedListener is not recognised as an existing method.

plusminus · by **plusminus** » Sun Dec 16, 2007 8:18 pm

Hello Lex,

what do you mean with "it didn't work".
Didn't compile or didn't lead to awaited result :?:

What was the error :?:

With me it requires the following imports to work:

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import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
Parsed in 0.031 seconds,  using GeSHi 1.0.8.4

This is my full working Code (no Compile-Errors):

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package org.anddev.android.testproject;
 
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.AdapterView.OnItemSelectedListener;
 
 
public class TestLayout extends ListActivity {
 
    @Override
    public void onCreate(Bundle icicle){
        super.onCreate(icicle);
        TextView v = new TextView(this);
        Spinner sp = new Spinner(this);
        sp.setOnItemSelectedListener(new OnItemSelectedListener(){
                        @Override
                        public void onItemSelected(AdapterView parent, View v,
                                        int position, long id) {
                                showAlert("Selection Changed...", "Position: " + position, "OK", false); 
                        }
 
                        @Override
                        public void onNothingSelected(AdapterView arg0) {
                                
                        }
        });
        this.setContentView(sp);
    }
}
Parsed in 0.037 seconds,  using GeSHi 1.0.8.4

Regards,
plusminus

Listactivity : is there a onFocus method ?

Listactivity : is there a onFocus method ?

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