CODEWITHSUNDEEP
javaandroidvalidation
acer
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Reputation: 303

How to validate edit text in android for special characters?

There are so many questions and answers regarding this topic,but my problem is I have edit text in my app,there I need to enter a name,so I need to validate my edit text,to avoid spaces and special characters as the only name,and edit text can't be empty also.How can I do that without textwatcher.

Upvotes: 1

Views: 9617

Answers (4)

Nirav Shah
Nirav Shah

Reputation: 67

edittext.setFilters(new InputFilter[] { new InputFilter() {

    @Override
    public CharSequence filter(CharSequence source, int start, int end,
            Spanned dest, int dstart, int dend) {
        String regex = "a-z~@#$%^&*:;<>.,/}{+";
        if(!dest.toString().contains(" ")||!dest.toString().matches("[" + regex + "]+")){
        return null;
        }
    }

} });

Upvotes: -1

Android
Android

Reputation: 535

String username=edittext1.getText().toString();
if(username.matches("")) {
     edittext1.setError("Invalid ");
}

add on xml file

android:inputType="textFilter"

may be it will help

Upvotes: 0

Brendon
Brendon

Reputation: 1368

You can use a simple regular expression

public boolean isValidWord(String word) {

    return word.matches("[A-Za-z][^.]*");
}

if return value is true then your input dont have a special char or spaces.. if false it may have special char or spaces.. simple and elegant..

Just call the method with the string paramater before add your name..

Upvotes: 4

Fabin Paul
Fabin Paul

Reputation: 1711

You can use input filter to filter out special characters and white space

 edittext.setFilters(new InputFilter[] { new InputFilter() {

        @Override
        public CharSequence filter(CharSequence source, int start, int end,
                Spanned dest, int dstart, int dend) {
            String regex = "a-z~@#$%^&*:;<>.,/}{+";
            if(!dest.toString().contains(" ")||!dest.toString().matches("[" + regex + "]+")){
            return null;
            }
        }

    } });

I hope it helps you..

Upvotes: 0

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