Convert ArrayList to String array in Android

Question

I have a ArrayList that contains values in the form [ann,john]. I want to convert this ArrayList into a String array in the form {\"ann\",\"john\"}.

How should I do

Answer 1

You can try this code

String[] stringA = new String[stringArrayList.size()];
stringArrayList.toArray(stringA)
System.out.println(stringA[0]);

Answer 2

Use the method "toArray()"

ArrayList<String>  mStringList= new ArrayList<String>();
mStringList.add("ann");
mStringList.add("john");
Object[] mStringArray = mStringList.toArray();

for(int i = 0; i < mStringArray.length ; i++){
    Log.d("string is",(String)mStringArray[i]);
}

or you can do it like this: (mentioned in other answers)

ArrayList<String>  mStringList= new ArrayList<String>();
mStringList.add("ann");
mStringList.add("john");
String[] mStringArray = new String[mStringList.size()];
mStringArray = mStringList.toArray(mStringArray);

for(int i = 0; i < mStringArray.length ; i++){
    Log.d("string is",(String)mStringArray[i]);
}

http://developer.android.com/reference/java/util/ArrayList.html#toArray()

Answer 3

String[] array = new String[items2.size()];
items2.toArray(array);

Answer 4

You could make an array the same size as the ArrayList and then make an iterated for loop to index the items and insert them into the array.

Answer 5

I know im very late to answer this. But it will help others, I was also stucked on this.

Here is what i did to get it work.

String[] namesArr = (String[]) names.toArray(new String[names.size()]);

Answer 6

try this

List<String> list = new ArrayList<String>();
list.add("List1");
list.add("List2");

String[] listArr = new String[list.size()];
listArr = list.toArray(listArr );

for(String s : listArr )
    System.out.println(s);