Hi,
I am having trouble passing a List type from a remote service to the
UI activity.
Here is a modified version of RemoteService example from the APIDemo.
(only included where its modified)
PROBLEM: The call back function (for List) is called successfully, but
the List returned is empty...
It works fine when the service does not run in a remote process.
(w/o android:process=":remote" in the manifest file)
Why is this happening...?
Also, when I tried Map type, it didn't even successfully generate a
IRemoteServiceCallback.java file....
it tries to do new Map().... and complains that its an abstract
class..
(FYI, List instantiates by new ArrayList())
1. in IRemoteServiceCallback.java
oneway interface IRemoteServiceCallback {
/**
* Called when the service has a new value for you.
*/
void valueChanged(int value);
void valueChangedList(out List values);
void valueString(String value);
}
2. In RemoteServiceBinding.java
/**
* This implementation is used to receive callbacks from the
remote
* service.
*/
private IRemoteServiceCallback mCallback = new
IRemoteServiceCallback.Stub() {
/**
* This is called by the remote service regularly to tell us
about
* new values. Note that IPC calls are dispatched through a
thread
* pool running in each process, so the code executing here
will
* NOT be running in our main thread like most other things --
so,
* to update the UI, we need to use a Handler to hop over
there.
*/
public void valueChanged(int value) {
Log.d("ee", "valuechanged=" + value);
mHandler.sendMessage(mHandler.obtainMessage(BUMP_MSG, value,
0));
}
public void valueChangedList(List values)
throws RemoteException {
// TODO Auto-generated method stub
Log.d("ee", "valuechangedlist=" +
values.toString());
mHandler.sendMessage(mHandler.obtainMessage(LIST_MSG, values));
}
public void valueString(String value) throws
RemoteException {
Log.d("ee", "valueString=" + value);
}
};
3. In RemoteService.java
private final Handler mHandler = new Handler() {
@Override public void handleMessage(Message msg) {
switch (msg.what) {
// It is time to bump the value!
case REPORT_MSG: {
// Up it goes.
int value = ++mValue;
// Broadcast to all clients the new value.
final int N = mCallbacks.beginBroadcast();
for (int i=0; i<N; i++) {
try {
mCallbacks.getBroadcastItem(i).valueChanged
(value);
List<String> values = new
ArrayList<String>
();
values.add("Hello, Mars");
mCallbacks.getBroadcastItem
(i).valueChangedList(values);
mCallbacks.getBroadcastItem(i).valueString
("HEEELLLLOOOO");
} catch (RemoteException e) {
// The RemoteCallbackList will take care
of removing
// the dead object for us.
}
}
mCallbacks.finishBroadcast();
// Repeat every 1 second.
sendMessageDelayed(obtainMessage(REPORT_MSG),
1*1000);
} break;
default:
super.handleMessage(msg);
}
}
};
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
-~----------~----~----~----~------~----~------~--~---
