CODEWITHSUNDEEP
javaandroid
MarianP
MarianP

Reputation: 31

Android app, check if EditText with INTEGER is empty or not

I have a problem trying to check if a EditText is empty or not. I have found a lot of solutions but all of them reffer to a string variable. I wanna check if a value that is Integer between 0 and 10 is empty or not.

Here is my code:

int value = Integer.parseInt(instances.getText().toString());;
if (value > 10)
    Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
else if (value < 0)
    Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
else if (value >= 0 && value <= 10) {
    schimba(v);
}

If I enter a number > 10 I get the toast, same if I enter a negative number.The function work great when I enter the number between 0 and 10 but if I let empty I get an error and I need to create the condition but I can't find something to integer.

Any help would be great, thank you in advance.

Upvotes: 0

Views: 5939

Answers (4)

vzamanillo
vzamanillo

Reputation: 10414

A simplified sample code

int value = instances.getText().toString()!=null && !instances.getText().toString().equals("") ? Integer.parseInt(instances.getText().toString()) : -1;
if (value < 0 || value > 10){
    Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
}else{
    schimba(v);
}

Upvotes: 0

Pankaj Arora
Pankaj Arora

Reputation: 10274

 String _data = instances.getText().toString().lenght()    
   if (_data  > 0){
     int value = Integer.parseInt(_data );;
       if(value > 10)
           Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
       else if(value<0)
            Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
        else if(value >= 0 && value <=10)
            {
                schimba(v);
            }
}else{
  Toast.makeText(getApplicationContext(), "msg you want to display!", Toast.LENGTH_SHORT).show();
  }

Upvotes: 0

Hamid Shatu
Hamid Shatu

Reputation: 9700

You can use matches() method to check that your EditText is empty or not.

String stringValue = usernameEditText.getText().toString();
if (!stringValue.matches("")) {

    int value = Integer.parseInt(stringValue);
    if(value > 10)
        Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
    else if(value<0)
        Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
    else if(value >= 0 && value <=10) {
        schimba(v);
    }
}

Upvotes: 0

Sebastien Bianchi
Sebastien Bianchi

Reputation: 722

How about doing:

 if (instances.getText().toString().lenght() > 0)
{
 int value = Integer.parseInt(instances.getText().toString());;
        if(value > 10)
            Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
        else
            if(value<0)
                Toast.makeText(getApplicationContext(), "Enter a value between 0 and 10!", Toast.LENGTH_SHORT).show();
            else
                if(value >= 0 && value <=10)
                {
                    schimba(v);
                }
}
else
{
  // HANDLE EMPTY VALUE HERE
}

Upvotes: 3

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