检查OnTextChanged中的空EditText

Question

I'm a newbie android developer.. Now, I want to check whether all my EditTexts are empty or not.. Below is my approach:

public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
    // When user changed the Text
    Log.d("qwe", String.valueOf(inputSearchNama.getText()));
    if(String.valueOf(inputSearchNama.getText()).isEmpty() || String.valueOf(inputSearchJenis.getText()).isEmpty()  || String.valueOf(inputSearchMerk.getText()).isEmpty()) {
        DBHelper db = new DBHelper(getActivity());
        try {
            db.openDataBase();
        } catch (SQLException sqle) {
            throw sqle;
        }
        db.close();
        List<PriceList> getPrice = db.getSearchedPriceList(cs, String.valueOf(inputSearchMerk.getText()), String.valueOf(inputSearchJenis.getText()));
        ListAdapter myAdapter = new MyAdapter(getActivity(), getPrice);
        theListView.setAdapter(myAdapter);
    }
}

As you can see, when I try to debug my EditText, it shows qwe﹕ [ 01-27 20:15:03.783 214:0x103 I/InputReader ] instead of empty string.. Any Idea ?

Answer 1

You may use something like below where edtContent is an EditText . If you have multiple EditText's define the TextWatcher elsewhere and pass the same instance to all of the EditText instances as a TextChangedListener via the addTextChangedListener method.

edtContent.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            if (TextUtils.isEmpty(s.toString().trim())) {

            } else {

            }
        }
    });

Answer 2

Try Below code

private TextWatcher watcher;
......................................
inputSearchNama.addTextChangedListener(watcher);    //register watcher to edittext
inputSearchJenis.addTextChangedListener(watcher);   //register watcher to edittext
inputSearchMerk.addTextChangedListener(watcher);    //register watcher to edittext
watcher = new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if(inputSearchNama.getText().toString().trim().equals("")){
                //write your code here
            }
             if(inputSearchJenis.getText().toString().trim().equals("")){
                //write your code here
            }
            if(inputSearchMerk.getText().toString().trim().equals("")){
                //write your code here
            }

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {}

        @Override
        public void afterTextChanged(Editable s) {}
    };

Answer 3

Here is the problem.

getText() does not return a string. It returns an Editable object.

See http://developer.android.com/reference/android/widget/EditText.html and http://developer.android.com/reference/android/text/Editable.html

So, when you convert the Editable to a string in your log statement using String.valueOf(), you are actually printing info from the Editable, not getting the string value it holds.

Try:

log.d("qwe", inputSearchNama.getText().toString());