Display error if user enters only spaces in EditText - Android

Question

I want to show error if user only enters spaces in EditText but i don't know how?

Here is my simple work

if (tName.getText().toString().matches(" ")) {
    Toast.makeText(MainActivity.this, "Must Add Your Name Here", Toast.LENGTH_SHORT).show();
}

Answer 1

Try with this code

 if(!editText.getText().toString().trim().isEmpty()){
           editText.setError("Empty spaces are not allowed");
           editText.setFocusable(true);
           Toast.makeText(MainActivity.this, "Must Add Your Name Here", Toast.LENGTH_SHORT).show();
    }