Android: Check if EditText is Empty when inputType is set on Number/Phone

Question

I have an EditText in android for users to input their AGE. It is set an inputType=phone. I would like to know if there is a way to check if this EditText is null

Answer 1

I found that these tests fail if a user enters a space so I test for a missing hint for empty value

EditText username = (EditText) findViewById(R.id.editTextUserName);

EditText password = (EditText) findViewById(R.id.editTextPassword);

// these hint strings reflect the hints attached to the resources

if (username.getHint().equals("Enter your username") || password.getHint().equals("Enter Your Password")){
      // enter your code here 

} else {
      // alls well
}

Answer 2

EditText textAge;
textAge = (EditText)findViewByID(R.id.age);
if (TextUtils.isEmpty(textAge))
{
Toast.makeText(this, "Age Edit text is Empty", Toast.LENGTH_SHORT).show();
//or type here the code you want
}

Answer 3

Add Kotlin getter functions

val EditText.empty get() = text.isEmpty() // it == ""
// and/or
val EditText.blank get() = text.isBlank() // it.trim() == ""

With these, you can just use if (edittext.empty) ... or if (edittext.blank) ...

If you don't want to extend this functionality, the original Kotlin is:

edittext.text.isBlank()
// or
edittext.text.isEmpty()

Answer 4

editText.length() usually works for me try this one

if((EditText) findViewByID(R.id.age)).length()==0){
   //do whatever when the field is null`
}

Answer 5

Simply do the following

String s = (EditText) findViewByID(R.id.age)).getText().toString();
TextUtils.isEmpty(s);

Answer 6

First Method

Use TextUtil library

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

Second Method

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