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1

This question already has an answer here:

I have a array

File [] temp=null;

And I have a 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?

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marked as duplicate by R.J, fglez, Muhammad Reda, Fls'Zen, Piskvor May 8 '13 at 12:09

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
    
loop through the temp array and add each File to the tempList – MaVRoSCy May 8 '13 at 10:05
    
thanks for reply. – vijayk May 8 '13 at 10:16
    
Just so others know, adding array contents to an ArrayList using a for loop will give you a warning in Android Studio that says it prefers you use the ArrayList's addAll() 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?) – Noni A. Apr 27 at 1:07

5 Answers 5

up vote 3 down vote accepted

Try this

tempList.addAll(Arrays.asList(temp));
share|improve this answer
    
thanks for reply. – vijayk May 8 '13 at 10:17
    
@vijayk You are welcome – Sanjaya Liyanage May 8 '13 at 10:23
    
'stackoverflow.com/questions/16433915/…; can you plz see this problem. – vijayk May 8 '13 at 10:26
up vote 0 down vote

use following 

List<File>tempList = Arrays.asList(temp);
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up vote 0 down vote

You can iterate through the array and add each element to the list.

for (File each : temp)
  tempList.add(each);
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up vote 0 down vote

You can use a collections library call for this:

Arrays.asList(temp);
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up vote 0 down vote

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));
share|improve this answer
    
The second line of code should be List<File> tempList = new ArrayList<>(Arrays.asList(temp));, note the diamond in ArrayList<> – bcsb1001 Feb 28 at 13:13
    
Dunno why I missed that lol. Lemme fix that – Adrian Shum Feb 28 at 13:14

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