listView Search in android? - android

I create listView by use the following code.If i use lv.setTextFilterEnabled(true);
i get the list View filter.If i set the filter text its not display the filtered listView.How to set the filter text;
lv=new ListView(this);
lv.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_checked, items));
//lv.setTextFilterEnabled(true);
lv.setFilterText("a");
Note :
I have the TextViews A to Z . When i touch letter 'a' i wish to list the elements starts with 'a' so that i need to set the list filter at run time.


Try this code:
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_checked, items);
lv.setListAdapter(adapter);
lv.setTextFilterEnabled(true);
adapter.getFilter().filter("a");

Related

Adding subitem to ListView

ListView list = (ListView) findViewById(R.id.listView1);
ArrayAdapter<String> dataAdaptor = new ArrayAdapter<String> (this, android.R.layout.simple_list_item_1, android.R.id.text1, cars);
list.setAdapter(dataAdaptor);
I write that codes for listview but I don't know how I get data for subitem. How can I do this?

A ListView item can have it's own custom layout. When you create your adapter for the ListView you can pass in the layout id to the Adapter constructor.
If you want to show some more details like image and text or two textview then You will have to extend an Adapter and implement getView() to property set the image+text.
please check this answer with examples.

Android: simple_list_item_single_choice is not working with ArrayAdapter

In my ListView i want single selection to delete the item. For that i am using simple_list_item_single_choice with ArrayAdapter. It show me the single choice option in my ListView. But i am not able to click on that checkbox.
Here is my code:
ArrayList array_list_title = mydb.getTitle();
System.out.println(array_list_title);
ArrayAdapter<String> arrayAdapter =
new ArrayAdapter<String>(this,android.R.layout.simple_list_item_single_choice, array_list_title);
listView.setAdapter(arrayAdapter);

You need to use ListView.setChoiceMode(int mode). Like
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); // Enables multiple selection
or
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); // Enables single selection
to enable checkboxes.
So your code will be like
ArrayAdapter<String> arrayAdapter =
new ArrayAdapter<String>(this,android.R.layout.simple_list_item_single_choice, array_list_title);
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
listView.setAdapter(arrayAdapter);

how to bind values to single spinner from one web service, another default value in android

String[] s={"1","2","3","4"};
ArrayAdapter<String> adp=new ArrayAdapter<String>(getApplicationContext(),android.R.layout.simple_spinner_dropdown_item,s);
spin.setAdapter(adp);
Now I want to get "4" at zero position of Spinner.

AFAIK, you can't change the position of the items inside a Spinner after you have set its Adapter.
If you want 4 to be the first item, you have to order your list accordingly:
String[] s={"4","1","2","3"};
ArrayAdapter<String> adp = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_spinner_dropdown_item, s);
spin.setAdapter(adp);

Populating ListView with ArrayAdapter force closes

I am trying to use the following code to populate a ListView using a predefined array of strings:
String[] schedule_names = getResources().getStringArray(R.array.test_schedules);
// Populate the ListView using the array of schedule names
ArrayList<String> als = new ArrayList<String>(Arrays.asList(schedule_names));
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.id.listView, als);
adapter.add("Test");
ListView listView = (ListView) findViewById(R.id.listView);
listView.setAdapter(adapter);
But it force closes unless I comment out listView.setAdapter(adapter); (which obviously means the ListView isn't populated at all). It seems the reason is a NullPointerException.
Why is this?

This line is wrong...
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.id.listView, als);
...the second parameter of the constructor should not be your ListView, it should be a layout with a TextView.
Try replacing R.id.listView with android.R.layout.simple_list_item_1

Searching a listview with custom adapter

My app has a twoline ListView with a custom adapter. I want to filter the listview contents with the input to a EditText. How is it possible?
lv.setAdapter(new MyCustomBaseAdapter(getActivity(),recordObjects));
//recordObjects is an ArrayList of objects

you have to set TextWatcher to your EditText and
and then filter your data using dynamic array...

Use the addTextChangedListener method to add a TextWatcher to your EditText. Then in your implementation of onTextChanged, add or remove the items from your ListView's adapter as appropriate.

Is this the kind of thing you wanted?
ListView lv = getListView();
/* Gets a ListView */
lv.setTextFilterEnabled(true);
/* sorts the listview */
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
getApplicationContext(),
android.R.layout.simple_list_item_1,
result.getheadlines());
setListAdapter(adapter);
/*
* gets the lisadapter from the XML and sets it equal to
* whatever result is
*/

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