I have an array:
File [] temp=null;
And I have an arrayList of File type:
List <File> tempList = new ArrayList <File>();
Now I want to add the content from temp to tempList. So anyone can please tell me How do I this?
5 Answers
Try this
tempList.addAll(Arrays.asList(temp));
1 Comment
vijayk
'stackoverflow.com/questions/16433915/…' can you plz see this problem.
If you are not going to update the content of the array (add/removing element), it can be as simple as
List<File> tempList = Arrays.asList(temp);
Of course, if you want a list that you can further manipulate, you can still do something like
List<File> tempList = new ArrayList<File>(Arrays.asList(temp));
2 Comments
bcsb1001
The second line of code should be
List<File> tempList = new ArrayList<>(Arrays.asList(temp));, note the diamond in ArrayList<>
Adrian Shum
Dunno why I missed that lol. Lemme fix that
use following
List<File>tempList = Arrays.asList(temp);
Comments
You can iterate through the array and add each element to the list.
for (File each : temp)
tempList.add(each);
Comments
You can use a collections library call for this:
Arrays.asList(temp);
temparray and add each File to thetempListArrayListusing a for loop will give you a warning in Android Studio that says it prefers you use theArrayList'saddAll()method. You could still do it, but for some reason Android Studio doesn't prefer it (maybe it's more efficient to use the method?)