arraylist return wrong index android

Question

i want to compare arraylist with a textview, when the value of arraylist and textview is match/same, i want to show the index of the arraylist..

this is my code

TextView namamenu2=(TextView)findViewById(R.id.nama_menu2);         
String nama_menu_upd = namamenu2.getText().toString();

for(MenuInputClass mic2 : results) {    
    String comp=mic2.getNama_menu();
    if(nama_menu_upd.equals(comp))
    {                               
        int compIndex=results.indexOf(comp);
        Toast.makeText(Appetizer_Activity.this,compIndex, Toast.LENGTH_LONG).show();                                
    }       
}

MenuInputClass

public class MenuInputClass {

    private String nama_menu;
    private String jumlah_menu;

    public void setNama_menu(String nama_menu) {
        this.nama_menu=nama_menu;
    }

    public String getNama_menu() {
        return (nama_menu);
    }
}

when i show compIndex on Toast, its always show -1.But when i try to show the size of result , its show correct size.how can i fix this?

Use For loop , Foreach will not let you know that index unless you take a int counter — Nirav Ranpara
– Nirav Ranpara, Commented Nov 30, 2012 at 5:34

Mohammed Azharuddin Shaikh · Accepted Answer · 2012-11-30 05:36:18Z

2

Try normal For loop instead Foreach, Foreach will not let you know that index unless you take a int counter.

With Normal For:

for(int i=0; i< results.size(); i++) {    
        MenuInputClass mic2= results.get(i);
        String comp=mic2.getNama_menu();
        if(nama_menu_upd.equals(comp))
        {                               
            Toast.makeText(Appetizer_Activity.this, i, Toast.LENGTH_LONG).show();                                
        }       
    }

With Foreach:

int counter=0;
for(MenuInputClass mic2 : results) {    
    String comp=mic2.getNama_menu();
    if(nama_menu_upd.equals(comp))
    {                               
        Toast.makeText(Appetizer_Activity.this, counter, Toast.LENGTH_LONG).show();                                
    }  
     counter++;     
}

edited Nov 30, 2012 at 5:36

answered Nov 30, 2012 at 5:31

Mohammed Azharuddin Shaikh

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