如何从ArrayList中删除条目？

Question

I'm trying to make a list of things (specifically Strings) that people have favorited, if they click 'add to Favorites' it executes this:

Class declaration:

ArrayList<String> favoritesArray = new ArrayList<String>();
String[] factoids;
int counter;

onCreateBundle below:

Button favoritesButton = (Button) findViewById(R.id.button1);
Resources res = getResources();
factoids = res.getStringArray(R.array.factsArray);

favoritesButton ActionListener below:

favoritesArray.add(factoid[counter]);

And then the ListView in the Favorites XML displays the new text, however, I'm stumped on what to do when they un -favourite the string. I would like the added Favorite text to be removed from the favoritesArray . How would I do this?

Answer 1

There is a method provided by ArrayList called .remove("your string here") you can use.

For example, arrListFav.remove("A") will find and remove the first occurrence of the string "A" in your array list.

Answer 2

You can simple use (remove) as shown bellow: for example you want to remove entity1 in the arraylist..

favoritesArray.remove("entity1");