Check if TextView is empty?

Question

I am displaying a date in a TextView. It is all working fine when there is some date. But if no date is chosen or if the TextView is empty (there is a hint "dd-mm-yyyy" though) then the app crashes. I am checking for empty TextView as follows: if(textview.setText().toString().isEmpty()) {//show error} can anyone help what I am doing wrong?

Initialisation of TextView and TextInputlayout:

tv_Current_Date = (TextView) findViewById(R.id.tv_Current_Date);
til_Current_Date = (TextInputLayout) findViewById(R.id.til_Current_Date);

Here is the code responsible for crash:

if (tv_Current_Date.getText().toString().isEmpty()) {
    til_Current_Date.setError("Please choose a date");
}

Method to set date:

public void setCurrentDateOnView() {
    String dateFormat = "dd-MM-yyyy";
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat(dateFormat, Locale.US);
    tv_Current_Date = (TextView) findViewById(R.id.tv_Current_Date);
    tv_Current_Date.setText(simpleDateFormat.format(calendar_now.getTime()));
    String short_weekday = new DateFormatSymbols().getShortWeekdays()[day_of_current_week];
    tv_Current_weekday.setText(short_weekday);
}

Also add the part where you define til_Current_Date in case it is there you are having the problem. — Juan, Sep 04 '17 at 16:01
I have editted my code, @Juan. The app was getting stopped-an_droid_dev. — Cjsparrow, Sep 04 '17 at 16:50
Sorry guys, actually I initialised the TextView inside the setCurrentDateOnView() method locally, but I had to initialise it globally. My code is working fine now. Thank you @Juan for pointing to my mistake. — Cjsparrow, Sep 09 '17 at 16:34

score 6 · Answer 1 · answered Sep 04 '17 at 16:18

6

try this

if (tv_Current_Date.getText().toString().equals("")) {
      til_Current_Date.setError("Please choose a date");
}

answered Sep 04 '17 at 16:18

joao86

2,056
1
21
23

1

Thanks for your cooperation. Actually the problem was to initialize the TextView. Now I have corrected it, and my code is working fine – Cjsparrow Sep 09 '17 at 16:38

score 0 · Answer 2 · answered Sep 05 '17 at 11:59

0

Try this

if(tv_Current_Date.getText().toString().equals("") && tv_Current_Date.getText().length() <= 0){
   tv_Current_Date.setError("your message");
}

answered Sep 05 '17 at 11:59

Tejas

358
5
23

Thanks for your cooperation. Actually the problem was to initialize the TextView. Now I have corrected it, and my code is working fine. – Cjsparrow Sep 09 '17 at 16:37

score 0 · Answer 3 · answered Sep 05 '17 at 12:06

On top of what Tejas and joao86 said, you should check and validate that the input is actually a date.

Check the following links where they discuss about validation:

Date Validation in Android

How to validate date in dd/mm/yyyy format in editext in android?

Java: Check the date format of current string is according to required format or not

score 0 · Answer 4 · answered Dec 03 '18 at 10:04

0

You need an else condition besides an if condition to run your code.

if (tv_Current_Date.getText().toString().isEmpty()) {
                til_Current_Date.setError("Please choose a date");
            } else{ put the code here}

answered Dec 03 '18 at 10:04

Haseeb Khan

127
2
9

Check if TextView is empty?

4 Answers4