For Loop to populate Array?

Question

In the ImageAdapter class of this tutorial, http://developer.android.com/resources/tutorials/views/hello-gridview.html

I would like to create and populate an array using a for loop. But it seems no matter where I place it, it causes an error.

For example, under private Context mContext; I put in the following and it causes an error. I think the loop is good, I'm just not sure where I can put it.

private String[] myString; for (int number = 0; number <= 12; number++) { myString[number] = "image" + number; }

Nick H · Accepted Answer · 2010-09-21 17:41:19Z

4

Create and populate the array in the constructor. Don't forget to actually instantiate the array before you start populating it.

public ImageAdapter(Context c) {
    mContext = c;
    myString = new String[12]; //create array
    for (int number = 0; number < myString.length; number++) { 
        myString[number] = "image" + number; 
    }
}

You should perhaps work on your Java a bit before jumping straight into Android.

answered Sep 21, 2010 at 17:41

Nick H

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Macarse · Accepted Answer · 2010-09-21 17:40:49Z

2

It should be:

String[] myString = new String[12];
for (int number = 0; number <= 12; number++) {
  myString[number] = "image" + number;
}

answered Sep 21, 2010 at 17:40

Macarse

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1 Comment

Nick H Over a year ago

This won't help if he's just going to paste it outside of any method or constructor :)

Matt Fenwick · Accepted Answer · 2012-02-29 12:41:10Z

0

public ImageAdapter(Context c)
 {
    mContext = c;

    myString = new String[12]; //create array


   for (int number = 0; number < myString.length; number++) { 

        myString[number] = "image" + number; 
    }
}

edited Feb 29, 2012 at 12:41

Matt Fenwick

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answered Feb 29, 2012 at 10:22

RAJESH JEDI

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1 Comment

Anup Cowkur Over a year ago

Please give at least a small explanation of your code. Thanks

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