How do I check if my EditText fields are empty? [closed]

Question

I did something like this once;

EditText usernameEditText = (EditText) findViewById(R.id.editUsername);
sUsername = usernameEditText.getText().toString();
if (sUsername.matches("")) {
    Toast.makeText(this, "You did not enter a username", Toast.LENGTH_SHORT).show();
    return;
}

private boolean isEmpty(EditText etText) {
    if (etText.getText().toString().trim().length() > 0) 
        return false;

    return true;
}

OR As Per audrius

  private boolean isEmpty(EditText etText) {
        return etText.getText().toString().trim().length() == 0;
    }

If function return false means edittext is not empty and return true means edittext is empty...

For validating EditText use EditText#setError method for show error and for checking empty or null value use inbuilt android class TextUtils.isEmpty(strVar) which return true if strVar is null or zero length

EditText etUserName = (EditText) findViewById(R.id.txtUsername);
String strUserName = etUserName.getText().toString();

 if(TextUtils.isEmpty(strUserName)) {
    etUserName.setError("Your message");
    return;
 }

try this :

EditText txtUserName = (EditText) findViewById(R.id.txtUsername);
String strUserName = usernameEditText.getText().toString();
if (strUserName.trim().equals("")) {
    Toast.makeText(this, "plz enter your name ", Toast.LENGTH_SHORT).show();
    return;
}

or use the TextUtils class like this :

if(TextUtils.isEmpty(strUserName)) {
    Toast.makeText(this, "plz enter your name ", Toast.LENGTH_SHORT).show();
    return;
}

Way late to the party here, but I just have to add Android's own TextUtils.isEmpty(CharSequence str)

Returns true if the string is null or 0-length

So if you put your five EditTexts in a list, the full code would be:

for(EditText edit : editTextList){
    if(TextUtils.isEmpty(edit.getText()){
        // EditText was empty
        // Do something fancy
    }
}

Other answers are correct but do it in a short way like

if(editText.getText().toString().isEmpty()) {
     // editText is empty
} else {
     // editText is not empty
}

Try this

TextUtils.isEmpty(editText.getText());