I have a Retrofit network call that id like to run every 5 seconds. My current code:
Handler h = new Handler();
int delay = 5000; //milliseconds
h.postDelayed(new Runnable() {
public void run() {
call.enqueue(new Callback<ApiResponse>() {
@Override
public void onResponse(Response<ApiResponse> response) {
Log.d("api", "response: " + response.body().getPosition().getLatitude().toString());
}
@Override
public void onFailure(Throwable t) {
}
});
h.postDelayed(this, delay);
}
}, delay);
This runs once, but then throws the following:
java.lang.IllegalStateException: Already executed. at retrofit2.OkHttpCall.enqueue(OkHttpCall.java:52) at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall.enqueue(ExecutorCallAdapterFactory.java:57) at orbyt.project.MyFragment$1.run(MyFragment.java:93)
Whats the issue here?
As a bonus: whats a better way to handle this? Ill be updating a map every update. I was thinking about trying to use Rx but not sure if this is an appropriate use-case, or how to implement it.
A Call
can only be used once. Its documentation tells you how to use one multiple times:
Use
clone()
to make multiple calls with the same parameters to the same webserver; this may be used to implement polling or to retry a failed call.
So use call.clone().enqueue(..)
for Asynchornous and call.clone().execute()
for Synchornous respectively to ensure that you have a fresh, unexecuted Call
for each request.