ClassCastException: java.lang.Object[] cannot be cast to java.lang.String[] android

Question

In my application I need to convert my arraylist to a string of an array. However, I am getting an error:

ClassCastException: java.lang.Object[] cannot be ca         


        

Answer 1

You should use toArray as mentioned above, but not in that way.

Either initialize the array first and fill it:

String[] urlArray = new String[image_urls.size()];
image_urls.toArray(urlArray);

After which, urlArray will contain all the Strings from image_urls, or pass in a zero-length String array:

listofurls = (String[]) image_urls.toArray(new String[0]);

See the documentation for toArray().

Answer 2

You just need to get the contents of arraylist in an array, right??

Can't u do like this?

       for(int i=0;i<folio.length();++i)
        {
            String m = folio.getString(i);
            Log.v("M"+i,m);
            image_urls.add(m);
            Log("test-url"+image_urls);


            listofurls[i] = m ;
        }

Answer 3

try

listofurls = image_urls.toArray(new String[image_urls.size()]);

Note: I suggest to rename listofurls to arrayOfURLs

Answer 4

listofurls = image_urls.toArray(new String[0]);

that should do the trick for all cases, even if you don't know the size of the resulting array.

Answer 5

Try this:

ArrayList<String> stock_list = new ArrayList<String>();
stock_list.add("stock1");
stock_list.add("stock2");
String[] stockArr = new String[stock_list.size()];
stockArr = stock_list.toArray(stockArr);
for(String s : stockArr)
    System.out.println(s);

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