FieldTask APIs

Introduction

To start a FieldTask activity:

  1. Create a new intent using an appropriate action.

  2. Set the type of the created intent.

  3. Start an activity using the intent.

Launching the form list

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setType("vnd.android.cursor.dir/vnd.odk.form");
startActivity(intent);

This displays a list of forms and allows the user to select one and fill it in.

Launching the instance list

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setType("vnd.android.cursor.dir/vnd.odk.instance");
startActivity(intent);

This displays a list of saved forms and allows the user to select one and edit it.

Getting the URI of a form or instance chosen by the user

Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("vnd.android.cursor.dir/vnd.odk.form");

static final int PICK_FORM_REQUEST = 1;  // The request code
startActivityForResult(intent, PICK_FORM_REQUEST);

To get the result, override onActivityResultMethod in the following way:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  // Check which request we're responding to
  if (requestCode == PICK_FORM_REQUEST) {
    // Make sure the request was successful
    if (resultCode == RESULT_OK) {
      // The Intent's data URI identifies which form was selected.
      Uri formUri = data.getData();
      // Do something with the form here
    }
  }
}

For an instance, change the intent type:

intent.setType("vnd.android.cursor.dir/vnd.odk.instance");

Using a URI to edit a form or instance

If the URI of a form or instance is known, it can be viewed or edited. For example, a URI received in onActivityResult() as described above can be used.

Intent intent = new Intent(Intent.ACTION_EDIT);
intent.setData("content://org.odk.collect.android.provider.odk.forms/forms/2");
startActivity(intent);

The same thing can be done with a specific instance.