Creating dynamic variable in Android

Question

I have multiple strings like st1, st2, st3, st4, st5, st6, st7. now i want to get that strings dynamically through for loop using its counter(in my case int i). like "st"+ i , but the android doesnot accept it so what should i do to get the string dynamically. for more info here is the chunk of the code

String image1 = cData.getString(cData.getColumnIndex("fld_image_url1"));
String image2 = cData.getString(cData.getColumnIndex("fld_image_url2"));
String image3 = cData.getString(cData.getColumnIndex("fld_image_url3"));
String image4 = cData.getString(cData.getColumnIndex("fld_image_url4"));
ArrayList<String> imagesArray = new ArrayList<String>();

 //for adding the string in the arraylist dynamically
for(int i=1;i<=4;i++){
    if("image"+i!=null){
        imagesArray.add(String.valueOf("image"+ i));    
    }
}

assylias · Accepted Answer · 2012-12-31 07:42:54Z

3

How about something like:

List<String> imagesArray = new ArrayList<String>();
for (int i = 1; i <= 4; i++) {
    String image = cData.getString(cData.getColumnIndex("fld_image_url" + i));
    if (image != null) {
        imagesArray.add(image);
    }
}

answered Dec 31, 2012 at 7:42

assylias

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Comments

ρяσѕρєя K · Accepted Answer · 2012-12-31 07:43:28Z

1

if you want to get value from cursor dynamically then change your code as:

 //for adding the string in the arraylist dynamically
for(int i=1;i<=4;i++){

        int count = cData.getColumnIndex("fld_image_url"+i));
        if(count != -1)
         imagesArray.add(cData.getString(count)); 
}

answered Dec 31, 2012 at 7:43

ρяσѕρєя K

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