Keep callback context in PhoneGap plugin?

Question

I need to implement some functionality that triggers an action on an interval and emits the results back to javascript.

To simplify things I will use the echo examp

Answer 1

Just if it helps somebody, in Android I am not using PluginResult and I am still able to keep a reference to the CallbackContext and call it anytime. I am not sure if this is the right way, but I can confirm that it worked for me.

Answer 2

You'll want to have something like:

NSString *myCallbackId;

as an instance-level variable (outside of any method, so it retains its value). Set it when you first come in to the plugin code:

myCallbackId = command.callbackId;

Then, right after you instantiate a PluginResult, but before using it, do something like:

[pluginResult setKeepCallback:[NSNumber numberWithBool:YES]];

That will tell it to keep the callback valid for future use.

Then do something like:

[self.commandDelegate sendPluginResult:pluginResult callbackId:myCallbackId];

Answer 3

hi for getting many callback to js you can use setKeepCallback(true)

eg

 PluginResult p3=   new PluginResult(PluginResult.Status.OK, "0");
 p3.setKeepCallback(true);