how to use a buttons for multiple listviews(for multiple options)

Question

I am using multiple ListViews to create multiple options for the End-user and now I have to use a button to direct the user to his/her desired page. This is my code -

    spinner = (Spinner) findViewById(R.id.spinner);
    spinner1 = (Spinner) findViewById(R.id.spinner1);
    String[] List_view1 = new String[]{
            "Choose your option...",
            "All",
            "1",
            "2"
    };

    String[] List_View2 = new String[]{
            "Choose your option...",
            "All",
            "4",
            "5",
            "6"
    };

    final List<String> list= new ArrayList<>(Arrays.asList(List_view1));
    final List<String> list1= new ArrayList<>(Arrays.asList(List_View2));

    button.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
       switch (v.getId()) {
          case R.id.button:
               String spi = spinner.getSelectedItem().toString();
               String spi1 = spinner1.getSelectedItem().toString();
               if (spi == "Choose your option..." || spi1 == "Choose your option...")
               {
               Toast.makeText(MainActivity.this, "Please make sure you have given every input, " += " and not leaving even one empty", Toast.LENGTH_SHORT).show();
               }
               if (spi == "1" || spi == "2" || spi1 == "5" || spi1 == "6")
               {
               Intent intent = new Intent(getApplicationContext(), CollegeListAES1.class);
               startActivity(intent);
               }
               if (spi == "2" || spi == "3" || spi1 == "4")
               {
               Intent intent = new Intent(getApplicationContext(), CollegeListAES2.class);
               startActivity(intent);
               }   
               break;
            }
        }
    });
}

Now if I select 2 and 4, then it will go to CollegeListAES2, but it is going to CollegeListAES1. surprisingly if I make another if statement like this, the same problem occurs. Talking about first of statement, which is "Choose your Option..." is perfectly working. How to get rid of this and go to the proper page?

Ali Khoshraftar · Accepted Answer · 2018-12-31 19:15:53Z

1

It's because that your every if statement contains only OR operator. As you said when you select 2 and 4 ( spi = 2 , spi1 = 4 ) so your first if statement is true because of your if is :

if (spi == "1" || spi == "2" || spi1 == "5" || spi1 == "6")

So the second one returns true and other values will not check anymore --> spi = 2 then it starts CollegeListAES1 activity.

You need to combine your if statements with OR and AND operators.

answered Dec 31, 2018 at 19:15

Ali Khoshraftar

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3 Comments

Deb Prakash Chatterjee Over a year ago

can you tell me about AND operator? how to apply?

Ali Khoshraftar Over a year ago

And operator : &&

Deb Prakash Chatterjee Over a year ago

Yeah definitely, Thanks a lot bro, you made my app.

Viraj S · Accepted Answer · 2018-12-31 19:01:55Z

0

Try this one,
Use AlertDialog to create a list of items and put them into singlechoiceItems list.
Whenever you select anyone and click on ok/positive button then you can redirect it anywhere you want.

answered Dec 31, 2018 at 19:01

Viraj S

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