Passing data from 1 activity to another

Question

I am using the following logic, I have two buttons in my activity 1 button sets flag to F and the other to C, the SOP statement in the below code prints correct if the value of flag each if its F it prints F else it prints C. But the If else statements I dont know what goes wrong, In each of the if else state I am trying the setText for TextView depending upon the condition if its F or C but everytime C is being called. Dont know why.

   Bundle extras = getIntent().getExtras();
    if (extras != null) {
      flag = extras.getString("Flag");
      System.out.println(flag);
      if(flag == "F"){
        do F
      }
      else{
        do C
      }
    else{
      do F + C
    }

score 1 · Answer 1 · answered Oct 18 '13 at 04:16

1

A much cleaner way would be

boolean flag = flag.equalsIgnoreCase("f") : false : true

then use your flag here

as

if(flag)
{
 ....
}

Or even for simplicity just store a boolean in the extra instead of a string...

answered Oct 18 '13 at 04:16

JoxTraex

13,423
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Ashwin Chandran · Answer 2 · 2013-10-18T03:10:28.690

0

Strings are reference types. Since this is java, you would have to do:

if(flag.equals("F")){
do F
}

edited Oct 18 '13 at 03:10

answered Oct 18 '13 at 03:04

Ashwin Chandran

1,447
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11

score 0 · Accepted Answer · answered Oct 18 '13 at 03:05

0

Your problem is not about passing data between activities. The == is not comparing the value of your String, use equals() instead of ==.

answered Oct 18 '13 at 03:05

Alfredo Cavalcanti

507
6
14

Passing data from 1 activity to another

3 Answers3