how to toast a message if editText is empty by clicking button?

Question

i have 2 edit Text in my application, 1 button to add the input numbers in the edit Text and 1 text view to display the result. I would like to put a toast message if my edit te

Answer 1

To create and show a Toast use this code:

Toast.makeText(this, "Please input number", Toast.LENGTH_LONG).show();

In order to work properly, you should replace this code:

if (editText1.equals("")) {
    editText1.setError("please input number");
}
if (editText2.equals("")) {
    editText2.setError("please input number");
}

with this:

if (editText1.getText().toString().length() == 0 || editText1.getText().toString().length() == 1) {
    Toast.makeText(this, "Please input number", Toast.LENGTH_LONG).show();
}