if else condition in java, android

Question

i have a TextView which is set using...

// Declare view variables
private TextView mInfoText;

// Assign views from layout file to cor. vars
mInfoText = (TextView) findViewById(R.id.infoText);

how do i do an if else statement for the text inside it, i thought about doing it like this, but it doesn't work, i get a red line under the word "Sand".

if (mInfoText = "Sand"){

                //Show correct

            } else {

                //Show incorrect
            }

Any ideas?

`mInfoText` is a `View`. The view is drawn on your screen. So, you cannot compare a `View` and a `String`. You should get content of the view. Use `mInfoText.getText()`, which will return `String` — GRiMe2D, May 05 '16 at 12:45

score 2 · Answer 1 · answered May 05 '16 at 12:46

You are wanting to compare the value of a TextView to a String. A TextView is not a String, not exacty. Its an object with properties. You need to call getText() to return a String.

Furthermore, you need to use ==, which is an equality check. This will return true or false on the statement. If you use one = it will always be true. One equal sign is used for assignment

if (mInfoText.getText() == "Sand")

score 1 · Answer 2 · answered May 05 '16 at 12:45

1

You can do this:

if (mInfoText.getText().equals("Sand")){
....
}

answered May 05 '16 at 12:45

dryairship

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Sanjeev · Answer 3 · 2016-05-05T12:48:22.577

0

You will have to do like this.As String Objects should be compared using String#equals method.

if (mInfoText!=null && mInfoText.getText().toString().equals("Sand")){

      //Show correct

} else {

     //Show incorrect
}

edited May 05 '16 at 12:48

answered May 05 '16 at 12:43

Sanjeev

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look closer. `mInfoText` is not a `String` – njzk2 May 05 '16 at 12:46
You'll need to getText and toString on the View first – OneCricketeer May 05 '16 at 12:47
My bad. Thanks for pointing it out – Sanjeev May 05 '16 at 12:47
equals checks for null first, so need to check it before equals... – Adnan Isajbegovic May 05 '16 at 12:47

score 0 · Answer 4 · answered May 05 '16 at 12:46

0

You neded to get the content of the text field using mInfoText.getText() and then compare it usgin equals

if(mInfoText != null && mInfoText.getText().equals("Sand")){
    //Show correct
}else{
    //Show incorrect
}

answered May 05 '16 at 12:46

Guillaume Barré

4,168
2
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score -1 · Answer 5 · answered May 05 '16 at 12:43

-1

= is assignment operator. Use == operator to do comparision of instance.

You should use equals() method to check if contents of two strings are the same.

answered May 05 '16 at 12:43

MikeCAT

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not expecting this answer from you as you have that much reputation. Please see question carefully and then post the answer. Author trying to compare string with TextView instance. – Amy May 05 '16 at 12:51

if else condition in java, android

5 Answers5