Android cannot find string if its null

Question

I want to send Emails using android intent. Every thing is working well except when choosing email app to send email with, in the send to field getting null value, although I check for null values but seems I cannot detect when a string is null. Can anybody help me solve this.

if (emailAddress[0]!=null && !emailAddress[0].isEmpty()) {
                Intent intent = new Intent(Intent.ACTION_SEND);
                intent.setType("text/plain");
                intent.putExtra(Intent.EXTRA_EMAIL, emailAddress);
                intent.putExtra(Intent.EXTRA_SUBJECT,
                        getResources().getString(R.string.email_sub));
                // intent.putExtra(Intent.EXTRA_TEXT, "I'm email body.");

                startActivity(Intent.createChooser(intent, "Send Email"));

I don't think the `!emailAddress[0].isEmpty()` is necessary... I could be wrong though... — TronicZomB, Mar 22 '13 at 12:45
use this .. public static boolean isNotNullNotEmptyNotWhiteSpaceOnlyByJava( final String string) { return string != null && !string.isEmpty() && !string.trim().isEmpty(); } — itsrajesh4uguys, Mar 22 '13 at 12:46

score 2 · Answer 1 · edited May 22 '13 at 18:34

2

Check the String with equals() or equalsingorecase();

String[]  emailAddress = new String[10]; 

          emailAddress[0]="asdfasdfasdfasdf";

          if (emailAddress[0]!=null && !emailAddress[0].isEmpty())
          {
              System.err.println("asddddddd  " +emailAddress[0] );
          }

edited May 22 '13 at 18:34

Siddharth

9,349
16
86
148

answered Mar 22 '13 at 12:45

itsrajesh4uguys

4,610
3
20
31

http://stackoverflow.com/questions/2920525/how-to-check-a-string-against-null-in-java have a look at this – itsrajesh4uguys Mar 22 '13 at 12:48

score 2 · Answer 2 · answered Mar 22 '13 at 12:47

2

try to use this syntax its detect null and empty string

if(!TextUtils.isEmpty(emailAddress[0]))

answered Mar 22 '13 at 12:47

steevoo

621
6
18

score 0 · Answer 3 · answered Mar 22 '13 at 12:48

0

You can use TextUtils.isEmpty(CharSequence str) method to detect if String is empty or null

answered Mar 22 '13 at 12:48

amukhachov

5,822
1
41
60

score 0 · Answer 4 · answered Mar 22 '13 at 12:55

0

TextUtils.isEmpty(charSequence char) is used for null String if it don't work then check if(emailAddress != null) because emailAddress[0] position value is null then your array is also null.

answered Mar 22 '13 at 12:55

Bhargav Panchal

1,159
1
12
27

score 0 · Answer 5 · answered Mar 22 '13 at 12:57

0

it might help you..

you can use any from below 2

if (emailAddress[0].toString().equals(""))

or

if (emailAddress[0].toString().length() > 0)

answered Mar 22 '13 at 12:57

Ajay

1,189
1
12
28

.toString() was the part that was making all the problems.. thanks – Darko Petkovski Mar 22 '13 at 13:20

score 0 · Answer 6 · answered Mar 22 '13 at 13:06

0

The string may not be null. AFAIK Intent.EXTRA_EMAIL takes String array as second argument.

Try this.

String[] addressArray = {"add1@mail.com", "a2@mail.com"};

//some lines...

intent.putExtra(Intent.EXTRA_EMAIL, addressArray);

answered Mar 22 '13 at 13:06

akaya

1,140
9
27

The OP is passing a `String[]` as the second parameter. – jprofitt Mar 22 '13 at 13:09
@jprofit My bad. I guess I expected to see emailAddresses or emailAdressArray – akaya Mar 22 '13 at 13:37

Android cannot find string if its null

6 Answers6