How can I filter ListView data when typing on EditText in android

Question

I have a ListView and a EditText. How can I filter ListView data when typing on EditText ?

Answer 1

1) create a custom adapter for your list view and create a removeIfMatch(String s) method:

public void removeIfMatch(String s) {
  for item in adapter:
    if item.matches(s) {
       data.removeItem(item);
       notifyDataSetChanged();
       break
    }
}

2) create a callback for when the EditText contents change

3) invoke adapter.removeIfMatch(editText.getText())

Answer 2

1. Add TextWatcher to EditText#addTextChangedListener
2. In onTextChanged add or remove items from your ListView's adapter. If you are subclassing ArrayAdapter it would have add and remove methods

Answer 3

You can use:

http://developer.android.com/reference/android/widget/TextView.html

addTextChangedListener( TextWatcher watcher )

to figure out when the textview was changed. I believe it should be called everytime a letter is added or removed.

Then update your list adapter to dislplay the new items by either:

1. creating a new list adapter and populating it with the items that satisfy the filter or
2. having a subclass of the BaseAdapter to accept your filter and call notifyDataSetChanged() after it has finished removing the items you no longer want

http://developer.android.com/reference/android/widget/BaseAdapter.html

Answer 4

Think my solution to this might be just what you are looking for!

http://stackoverflow.com/questions/1737009/answer-to-making-a-nice-looking-listview-filter-on-android/1737042#1737042

Answer 5

Johe, Have a look here, explanation is VERY clear. http://stackoverflow.com/questions/1901020/android-xml-list-view-with-filter/2282012#2282012