Android Studio Java - First array to display index values from second array

Question

I have an “EditText” called Inputs1 to enter values to compare with the Array example1 using an “If” statement.

The Array named example1 has these values: 5 , 10, 15, 20, 25, 30

Outputs1 is used to display values from the Array example1

Also, an Array named example2 have these values: 105, 110, 115, 120, 125, 130

Outputs2 is used to display values from the Array example2 using the index value from the Array example1

Example:

The Inputs1 value is: 20

Outputs1 displays the value: 20

Outputs2 should display the value: 120

I went as far as making Outputs1 to display the value: 20, but I cannot get the code for Outputs2 to display the value: 120.

Please, anyone with the above experience or knowledge help me?

Thanks.

Code:

    public class exampleOutput extends AppCompatActivity {

    Editable text;
    EditText Inputs1;
    TextView Outputs1;
    TextView Outputs2;
    Integer arrayIndex;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_example_output);

        Outputs1 = (TextView) findViewById(R.id.Outputs1);
        Inputs1 = (EditText) findViewById(R.id.Inputs1);
        text = Inputs1.getText();
        Outputs2 = (TextView) findViewById(R.id.Outputs2);



    }

    final String[] example1 = {("5"), ("10"), ("15"), ("20"), ("25"), ("30")};
    final String[] example2 = {("105"), ("110"), ("115"), ("120"), ("125"), ("130")};


    public void displayExample(View v) {

        if (Arrays.asList(example1).contains(Inputs1.getText().toString())) {

            Outputs1.setText("You typed in: " + text + ", which is correct!");
            arrayIndex = (Arrays.asList(example1).indexOf(Inputs1.getText().toString()));
            Outputs2.setText("Your second number is: [The value from the second array] " +  ", the index is: " + arrayIndex + "!");

            } else {

            Outputs1.setText("Please type in a number 1-5.");
            Outputs2.setText("");

      }

   }

}

Please post your code on how you get value for Label1

Ayush Khare
– Ayush Khare

2018-12-03 02:15:36 +00:00
Commented Dec 3, 2018 at 2:15 — Ayush Khare
– Ayush Khare, Commented Dec 3, 2018 at 2:15
what's your current code?

bunbun
– bunbun

2018-12-03 02:15:56 +00:00
Commented Dec 3, 2018 at 2:15 — bunbun
– bunbun, Commented Dec 3, 2018 at 2:15

C Forge · Accepted Answer · 2018-12-03 02:29:58Z

1

you can use

int indexFromLabel1 = array1.indexOf(valueWhoseIndexYouNeed);

Then, if I unserstand correctly, you want to show the value at this index in Array2. This you must already have figured out

int valueFromArray2 = array2[indexFromLabel1 ];

This is assuming I understood the scenario correctly.

Better yet, you should apply check to see if the required index exists in Array2, like so

if( indexFromLabel1 < array2.length() ){
    int valueFromArray2 = array2[indexFromLabel1 ];
}else {
    //Do your logic

}

edited Dec 3, 2018 at 2:29

answered Dec 3, 2018 at 2:24

C Forge

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2 Comments

Devealte Over a year ago

This worked because of the array2[indexFromLabel1 ], thanks for helping me on that, I was trying to figure out how to print the value.

C Forge Over a year ago

glad to hear that.

Ayush Khare · Accepted Answer · 2018-12-03 03:15:57Z

1

Looks like you never print the value from example2 array

Try changing the this line:

Outputs2.setText("Your second number is: [The value from the second array] " +  ", the index is: " + arrayIndex + "!");

to this:

Outputs2.setText("Your second number is: [The value from the second array] " + example2[arrayIndex] + ", the index is: " + arrayIndex + "!");

answered Dec 3, 2018 at 3:15

Ayush Khare

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1 Comment

Devealte Over a year ago

I tried to print the value but I never knew how, now it works because of the + example2[arrayIndex], thanks for helping me on that. Sadly, the other person responded first, so I can't put this as a correct answer.

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