/** Initiate the service binding protocol. */
@Override
public void bindService() {
Log.d(TAG, "calling bindService()");
// Launch the Acronym Bound Services if they aren't already
// running via a call to bindService(), which binds this
// activity to the AcronymService* if they aren't already
// bound.
if (mServiceConnectionSync.getInterface() == null)
mActivity
.get()
.getApplicationContext()
.bindService(
AcronymServiceSync.makeIntent(mActivity.get()),
mServiceConnectionSync,
Context.BIND_AUTO_CREATE);
if (mServiceConnectionAsync.getInterface() == null)
mActivity
.get()
.getApplicationContext()
.bindService(
AcronymServiceAsync.makeIntent(mActivity.get()),
mServiceConnectionAsync,
Context.BIND_AUTO_CREATE);
}
/** Initiate the service unbinding protocol. */
@Override
public void unbindService() {
if (mActivity.get().isChangingConfigurations())
Log.d(TAG, "just a configuration change - unbindService() not called");
else {
Log.d(TAG, "calling unbindService()");
// Unbind the Async Service if it is connected.
if (mServiceConnectionAsync.getInterface() != null)
mActivity.get().getApplicationContext().unbindService(mServiceConnectionAsync);
// Unbind the Sync Service if it is connected.
if (mServiceConnectionSync.getInterface() != null)
mActivity.get().getApplicationContext().unbindService(mServiceConnectionSync);
}
}
/*
* Initiate the asynchronous acronym lookup when the user presses
* the "Look Up Async" button.
*/
public void expandAcronymAsync(String acronym) {
final AcronymRequest acronymRequest = mServiceConnectionAsync.getInterface();
if (acronymRequest != null) {
try {
// Invoke a one-way AIDL call, which does not block
// the client. The results are returned via the
// sendResults() method of the mAcronymResults
// callback object, which runs in a Thread from the
// Thread pool managed by the Binder framework.
acronymRequest.expandAcronym(acronym, mAcronymResults);
} catch (RemoteException e) {
Log.e(TAG, "RemoteException:" + e.getMessage());
}
} else {
Log.d(TAG, "acronymRequest was null.");
}
}
/*
* Initiate the synchronous acronym lookup when the user presses
* the "Look Up Sync" button.
*/
public void expandAcronymSync(String acronym) {
final AcronymCall acronymCall = mServiceConnectionSync.getInterface();
if (acronymCall != null) {
// Use an anonymous AsyncTask to download the Acronym data
// in a separate thread and then display any results in
// the UI thread.
new AsyncTask<String, Void, List<AcronymData>>() {
/** Acronym we're trying to expand. */
private String mAcronym;
/**
* Retrieve the expanded acronym results via a synchronous two-way method call, which runs
* in a background thread to avoid blocking the UI thread.
*/
protected List<AcronymData> doInBackground(String... acronyms) {
try {
mAcronym = acronyms[0];
return acronymCall.expandAcronym(mAcronym);
} catch (RemoteException e) {
e.printStackTrace();
}
return null;
}
/** Display the results in the UI Thread. */
protected void onPostExecute(List<AcronymData> acronymDataList) {
mResults = acronymDataList;
mActivity
.get()
.displayResults(acronymDataList, "no expansions for " + mAcronym + " found");
}
// Execute the AsyncTask to expand the acronym without
// blocking the caller.
}.execute(acronym);
} else {
Log.d(TAG, "mAcronymCall was null.");
}
}
