CODEWITHSUNDEEP
androidp2pwifi-direct
Netsuki
Netsuki

Reputation: 53

How to use Android's Wi-Fi Direct to send and receive ArrayList<String> objects from my app on one phone to the app on another?

I have looked at the Android wifi p2p API here and have taken a look at the sample code provided in "WiFiDirectActivity" which simply allows phones to transfer image files from one phone to another. The code they use for this is:

// Allow user to pick an image from Gallery or other
// registered apps
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, CHOOSE_FILE_RESULT_CODE);

The problem is this only one way and it only transfers files whereas I would like to implement it into my pvp card game application code to transfer ArrayList objects. How can I do this? I would like to NOT transfer txt files and have a file buffer in my code. I have not found any good tutorials that show how this wifi-direct connectivity can be incorporated into a larger app.

Upvotes: 2

Views: 1346

Answers (1)

Nixi Alexandru
Nixi Alexandru

Reputation: 41

I am also kinda new to this topic (Android and especialy Wi-Fi DIrect p2p) but i think it transfers bytes. So if you transfer your ArrayList to an array of bytes, like this:

byte[] result = new byte[list.size()];
for(int i=0; i<list.size; i++){ 
    result[i] = list.get(i).byteValue();
}

you may succed.

Note that to code you posted does not do the actuall transfer, it just lets the user select an image from the gallery. I can`t point you to the exact pice of code that does the transfer (noobie me) but I think it uses som OutputStram-s.

Upvotes: 1

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