How to pass string arguments to AsyncTask in android

Question

This must be really easy but I am stuck now for an hour or so. I am passing String[] to an AsyncTask class as such

class test extends AsyncTask<String, Void, Void>{
@Override
    protected Void doInBackground(String... params) {
        // Again, use either params local to this function
        // or args local to the entire function... 
        // both would be redundant
        String _NAMESPACE = params[0];
        String _METHODNAME = params[1];
        String _SOAPACTION = params[2];
        String _USER_NAME = params[3];
        String _USER_PASS= params[4];

        // Do background stuff
    }
}

I am sending my arguments as such

test t = new test();
String[] s = {"a", "b", "c", "d", "e"};
t.execute(s);

This is not working. How would I pass multiple String objects is my question. If I pass one string it works but if I try to pass them in an array it fails. btw I don't want to change the string parameter of the AsyncTask class to String[] because it would break my other code. Any help would be appreciated.

Answer 1

If you want to pass multiple Objects to this AsyncTask you can create a constructor to match them.

private class MyAsyncTask extends AsyncTask<Void, Void, Integer>
    {
        public AsyncFileExists(Integer num1, Integer num2, String s, Boolean b) {
            super();
            // Do something with these parameters
        }
        @Override
        protected void onPreExecute() { }

        @Override
        protected Integer doInBackground(Void... params) {
        ...

And then just do

MyAsyncTask myTask = new MyAsyncTask(5, 10, "a string", false);

Answer 2

Are you sure it's not working? Pardon, if I am missing something!

String[] s = { "a", "b", "c", "d", "e" };
String[] s1 = new String[]{ "a", "b", "c", "d", "e" };

both result in [a, b, c, d, e]

In doInBackground(String... params) you are expecting String varargs . So you can basically pass zero or more String objects (or an array of them) as the parameter(s) for your function doInBackground . See here .

Answer 3

t.execute(string1, string2, string3, string4);  // as many as you want..

这是将多个String参数传递给AsyncTask的最简单方法