Question

I have been taking a look over stackoverflow but I did’t find a definition about what is “createChooser” and why I can use and in whick kind of situations is good to use it.

Thanks in advance.

Answer 1

For example: you have a share picture option in your application.

You define an intent like this:

Intent picMessageIntent = new Intent(android.content.Intent.ACTION_SEND);
picMessageIntent.setType("image/jpeg");

File downloadedPic =  new File(
    Environment.getExternalStoragePublicDirectory(
    Environment.DIRECTORY_DOWNLOADS),
    "q.jpeg");

picMessageIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(downloadedPic));

Than when you call:

startActivity(picMessageIntent);  

all applications on your phone capable of getting this picture will be listed.

If you want to custimize the title of that list, you can use createChooser like this:

startActivity(Intent.createChooser(picMessageIntent, "Send your picture using:"));