How To Make Textwatcher Wait For Some Time Before Doing Some Action

I have an EditText to filter the items in the ListView below it, which may contain more than 1000 items usually. The TextWatcher is: txt_itemSearch.addTextChangedListener(new Text

Solution 1:

How can I make the textWatcher wait for 1-2 secs and if no more input happens after 2 secs, then filter the list.

As I already said in the comment you should look into using the getFilter() method of the adapter. As that may not be suitable(as you say) try to implement the same mechanism the adapter's filter uses to cancel in between filter inputs.

privateHandlermHandler=newHandler();

publicvoidafterTextChanged(Editable s) {
      mHandler.removeCallbacks(mFilterTask); 
      mHandler.postDelayed(mFilterTask, 2000);
}

where filterTask is:

RunnablemFilterTask=newRunnable() {

     @Overridepublicvoidrun() {
          fillItemList();
     }       
}

Solution 2:

Using RxBinding :

RxTextView.textChanges(edittext)
            .skipInitialValue()
            .debounce(TIME_TO_WAIT, TimeUnit.MILLISECONDS)
            .subscribe({
               //do the thing
            })
}