If statement in Android Studio - Proceed if just one word in a sentence matches

Question

I am trying to create an app that checks the condition of a statement entered in an EditText field. At the moment, I have written if the word entered is 'next' which is not case sensitive to then proceed onto the next screen by pressing the 'Blogin' button.

My question is how do I write an 'if' statement so that if a phrase is entered into the EditText field and just any part of the phrase contains the word 'next' to then proceed to the next page by pressing the 'Blogin' button? For example if a phrase is entered as 'please go to the next page', the 'if' statement should recognise there is the word 'next' which shouldn't be case sensitive and hence allow you to proceed to the next page by pressing the 'Blogin' button.

Below is a snippet of part of the relevant code that needs to be changed:

 public void onButtonClick(View v) {
    if (v.getId() == R.id.Blogin) {
        String str = a.getText().toString();


        //Go to the next 'Display' window or activity if the person enters the correct username which is not case sensitive
        if (str.equalsIgnoreCase("next")) {
            Intent userintent = new Intent(MainActivity.this, Display.class);
            startActivity(userintent);
        } else {
            Toast.makeText(getApplicationContext(), "Incorrect Information", Toast.LENGTH_SHORT).show();
        }
    }
}

Both method work well, Daniel yours is the simplest to implement though — N MC, May 04 '16 at 00:11

score 2 · Accepted Answer · edited May 23 '17 at 12:09

All you really need to do is use the contains() method in conjunction with the toLowerCase() method:

    if (str.toLowerCase().contains("next")) {
        Intent userintent = new Intent(MainActivity.this, Display.class);
        startActivity(userintent);
    } else {
        Toast.makeText(getApplicationContext(), "Incorrect Information", Toast.LENGTH_SHORT).show();
    }

For more in-depth info, see here: String contains - ignore case

score 1 · Answer 2 · answered May 04 '16 at 00:02

1

You can use java.lang.String.contains(), like this:

if (str.contains("next")||str.contains("Next") {
    Intent userintent = new Intent(MainActivity.this, Display.class);
    startActivity(userintent);
} else {
    Toast.makeText(getApplicationContext(), "Incorrect Information", Toast.LENGTH_SHORT).show();
}

answered May 04 '16 at 00:02

Matei Radu

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What about "neXt" or "nexT" or "nExT"? – Daniel Nugent May 04 '16 at 00:03
@DanielNugent good point, you're right. I'll update the answer. – Matei Radu May 04 '16 at 00:05
@DanielNugent on second thought, I feel like I'm stealing your answer. You should write your own answer :) – Matei Radu May 04 '16 at 00:08
1

I'll wait till @DanielNugent posts the answer and then accept it – N MC May 04 '16 at 00:15

If statement in Android Studio - Proceed if just one word in a sentence matches

2 Answers2