How to detect emoticons in EditText in android

Question

I want to detect whether my EditText contains smilie (emoticons) or not. But I have no idea that how to detect them.

Answer 1

If by simile you are referring to the figure of speech, you can use .getText() and the String method .contains(String) to check whether it contains the Strings "like" or "as".

Snippet:

EditText myEditText = (EditText)findViewById(R.id.myEditText);
String input = myEditText.getText();
if(input.contains("like") || input.contains("as"))
{
    //code
}

Answer 2

It depends the way you are implementing simleys in your edittext. if you are using motioons you can do this using a trick. You can set a condtion whenever a simpley a added you can add some type of keyword to arrayList and whenever smiley is remover you can remove that keyword from arrayList. And at last you can check that list whether that simley is added to it or not by processing the arrayList items.

for ex...

if(Smiley_added){
arraylist.add(smiley_code,i);
}

if(simley_removed){
arraylist.remove(smileycode,i);
}

if(arraylist.get(i).equals("smileyCode")){
do this....
}

Answer 3

To disable emoji characters when typing on the keyboard I using the following filter:

InputFilter filter = new InputFilter() {
    @Override
    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
        for (int i = start; i < end; i++) {
            int type = Character.getType(source.charAt(i));
            //System.out.println("Type : " + type);
            if (type == Character.SURROGATE || type == Character.OTHER_SYMBOL) {
                return "";
            }
        }
        return null;
    }
};

mMessageEditText.setFilters(new InputFilter[]{filter});

If you need only detect if EditText contains any emoji character you can use this priciple (Character.getType()) in android.text.TextWatcher interface implementation (in onTextChange() or afterTextChanged() method) or e.g. use simple for cycle on mMessageEditText.getText() (returns CharSequence class) with charAt() method.