I have created an app in iOS that uses Parse to store data and also uses Parse Push for messaging between users. I am now converting the app to Android and trying to use the same Parse backend for both. I am successfully uploading/downloading data and I can even send a message from an Android user to a iOS user, but I can't get my Android device to receive messages. The underlining problem seems to be that I can't get the installation to work. I am calling this block of code from my onCreate function:
Parse.enableLocalDatastore(this);
Parse.initialize(this, "id1", "id2");
ParsePush.subscribeInBackground("", new SaveCallback() {
#Override
public void done(ParseException e) {
if (e == null) {
Log.d("com.parse.push", "successfully subscribed to the broadcast channel.");
} else {
Log.e("com.parse.push", "failed to subscribe for push", e);
}
}
});
ParseInstallation.getCurrentInstallation().saveInBackground();
After calling this code I check for a new installation in the database, but nothing ever shows up. It seems as though ParseInstallation.getCurrentInstallation().saveInBackground(); is not doing anything. Am I missing something?
the object associated with the installation on the given device does not have a row in the parse installation table, this is why you are getting the error, there are 2 possible solutions to this problem :
uninstalling the app, and reinstalling it (which is an unacceptable
solution), or
manually clearing the app parse cache. see the answer for how to do
that
This method must be called before you call Parse.initialize...
public static boolean deleteInstallationCache(Context context) {
boolean deletedParseFolder = false;
File cacheDir = context.getCacheDir();
File parseApp = new File(cacheDir.getParent(),"app_Parse");
File installationId = new File(parseApp,"installationId");
File currentInstallation = new File(parseApp,"currentInstallation");
if(installationId.exists()) {
deletedParseFolder = deletedParseFolder || installationId.delete();
}
if(currentInstallation.exists()) {
deletedParseFolder = deletedParseFolder && currentInstallation.delete();
}
return deletedParseFolder;
}
Alternatively, you can use package-private method
ParseInstallation.clearCurrentInstallationFromDisk(Context context)
public static void clearParseInstallation(Context context) {
try {
Method method = ParseInstallation.class.getDeclaredMethod("clearCurrentInstallationFromDisk", Context.class);
method.setAccessible(true);
method.invoke(null, context);
} catch (Exception e) {
Log.e(e);
}
}
add "bolts-android-x.x.x" lib in libs folder.
You can find it in the Parse SDK zip file
Related
I'm working on an existing Android App with parse back-end (localDatastore is enabled but not used in this context) which has the following object structure:
Object A has an array of objects B
Object B has an array of objects C
I save this object structure using saveInBackground in calling the next saveInBackground in the done SaveCallback in reverse Order(C,B,A). For the inner two that works fine, but the top level object isn't saved.
Here's the code (frame, newStep and order are objects of classes inheriting from the ParseObject class)
frame.saveInBackground(new SaveCallback() {
#Override
public void done(ParseException e) {
if (e == null) {
Log.i("Info", "frame.save callback OK");
frames.add(frame);
newStep.setTimeFrames(frames);
newStep.saveInBackground(new SaveCallback() {
#Override
public void done(ParseException e) {
if (e == null) {
Log.i("Info", "newStep.save callback OK");
List<ProcessingStep> steps = order.getProcessingSteps();
steps.add(newStep);
order.setProcessingSteps(steps);
order.saveInBackground(new SaveCallback() {
#Override
public void done(ParseException e) {
if (e == null){
Log.i("Info", "order.save callback OK");
}else{
Log.i("Info", "order.save callback FAIL");
}
}});
} else {
Log.i("Info", "newStep.save callback FAIL");
e.printStackTrace();
}
}
});
} else {
Log.i("Info", "frame.save callback FAIL");
e.printStackTrace();
}
}
});
In the console log I see only "frame.save callback OK", the "newStep.saveInBackground()" seems to be executed too (object appears in backend) however I never get the log message in the callback.
If I save all objects before synchronously without references to each other first and then call the code here, it seems to work (worked at least once) but took for ever (minutes). Queries from the back-end are super fast and the frame object is also saved almost instantly but the done-callbacks seem to bugging. When it fails I do not get any exception, log anything it just seems to fail silently.
I'm looking for any insight why Parse behaves like that as well as how to fix it.
edit: The problem seems to be with the double relation (A to B and B to C). If I try with only A to B or B to C it works just fine. What remains mysterious to me, however, is why splitting the operation up with callbacks doesn't seem to work.
The problem was the enabled localdatastore. Without localdatastore enabled everything works as it should.
I'm working on a project that improves Automation Test for Android's App. What I want to do is very "easy": I have this very simple SIP Client with a basic UI and developed just reading the API guides on the android developer website (https://developer.android.com/guide/topics/connectivity/sip.html) that receives and makes SIP calls.
I need to control remotely this app from my PC, connected at the same local network or the same wifi, by sending commands or similar (without interact with the phone) to the app itslef running normally on my phone.For a specific example I posted the method initiateCall() that calls sipAddress(in the app, sipAddress is taken from a Text Box), what I want to do is:
Starting the app on my phone
calling the method initiateCall() from my pc giving a sipAddress as a parameter (I must not use the UI from the app running, that's why I need to give the sipAddress)
check if an outgoing call starts from the app running on my phone
I thought that the solution must be something about web-services,but I don't have any better ideas and i don't know how to start and where to start solving this problem,that's why i need you help.
public void initiateCall() {
try {
SipAudioCall.Listener listener = new SipAudioCall.Listener() {
// set up the listener for outgoing calls
#Override
public void onCallEstablished(SipAudioCall call) {
call.startAudio();
call.setSpeakerMode(true);
updateStatus(call, 2);
}
#Override
public void onCallEnded(SipAudioCall call) {
updateStatus("Call End");
}
};
call = manager.makeAudioCall(me.getUriString(), sipAddress,
listener, 30);
} catch (Exception e) {
Log.i("WalkieTalkieActivity/InitiateCall",
"Error when trying to close manager.", e);
if (me != null) {
try {
manager.close(me.getUriString());
} catch (Exception ee) {
Log.i("WalkieTalkieActivity/InitiateCall",
"Error when trying to close manager.", ee);
ee.printStackTrace();
}
}
if (call != null) {
call.close();
}
}
}
You could do it REST API style. You would need to set up a minimalistic webserver.
If you access for example the url phoneip/ctrl/makecall?number=yournumber a serverside method us called if set up correctly. Then you can call you method and use the GET or POST variables as arguments.
You would have to look into Java Webserver Libraries/Frameworks. You can pick a lightweight one for that purpose. For example this one.
You could then also add security features (authentification to protect it) quite easily.
Example with sparkjava
import static spark.Spark.*;
....
get("/ctrl/makecall", (request, response) -> {
String phonenum = request.queryParams("number"); //may not be accurate; you have to determine the GET variable called "number" in that case; you can rename it; see docs!!!
//call your method with proper arguments
});
i'm having an issue that soon enough going to blow me.
i have Database table lets call it A. table A has field that determines if this row is processed or no. i update the field myself from within the Parse Browser to either True | False, and trying to call query.findInBackground() to check with the Boolean value however the returned List always returns False if its True and vice versa. enough talking let me show you what i'm doing.
public static void getMyRequests(ParseUser user, final FindCallback<ServicesModel> callback) {
ParseQuery<ServicesModel> query = new ParseQuery<>(ServicesModel.class);
if (!user.getBoolean(ParseHelper.CAN_UPLOAD)) {
query.whereEqualTo("user", user);
}
query.findInBackground(new FindCallback<ServicesModel>() {
#Override public void done(final List<ServicesModel> objects, ParseException e) {
if (e == null) {
if (objects != null && !objects.isEmpty()) {
for (ServicesModel object : objects) {
object.setHandlerUser(object.getParseUser("handlerUser"));
object.setProcessedTime(object.getLong("processedTime"));
object.setCategoryType(object.getString("categoryType"));
object.setUser(object.getParseUser("user"));
object.setUserRequest(object.getString("userRequest"));
object.setImageUrl(object.getString("imageUrl"));
object.setProcessed(object.getBoolean("isProcessed"));
Logger.e(object.getBoolean("isProcessed") + "");
}
callback.done(objects, null);
} else {
callback.done(null, new ParseException(1001, "No Services"));
}
} else {
callback.done(null, e);
}
}
});
}
the code above suppose to refresh my data but however my log always shows that isProcessed is False even tho it's set to True inside the Parse Browser
what i have tried besides this? fetchAllInBackground & fetch() you name it. the object will always return false until i re-run the application from Android Studio what i'm doing here wrong? btw here is how i initialize Parse
Parse.setLogLevel(BuildConfig.DEBUG ? DEBUG_LEVEL : Parse.LOG_LEVEL_NONE);
ParseObject.registerSubclass(ProductsModel.class);
ParseObject.registerSubclass(ProductRentalModel.class);
ParseObject.registerSubclass(ServicesModel.class);
Parse.enableLocalDatastore(context);
Parse.initialize(context, context.getString(R.string.app_id), context.getString(R.string.client_id));
the answer was to remove
Parse.enableLocalDatastore(context);
which is bad anyway, without the datastore enabled the data are refreshed probably, however with enabling the local database, the data will not refresh unless if i killed the app and/or re-install it. that's bad. but did the trick.
I'm trying the my Azure Mobile Service. Below is the code to make a new ToDo item entry. The sample Android code shows how to create a mobile client. I added it to the onCreate method as mentioned in the example.
But the insert always fails. I always get an exception which says com.microsoft.windowsazure.mobileservices.MobileServiceException: Error while processing request.
mClient does get initialized. But, mClient.mCurrentUser is null. Not sure if this is a problem.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
mClient = new MobileServiceClient("https://myservice.azure-mobile.net/",
"slkerjasfi234eSomePrivateKey", this);
Item item = new Item();
item.setText("Awesome item");
item.setComplete(false);
mClient.getTable(Item.class).insert(item,
new TableOperationCallback<Item>() {
public void onCompleted(Item entity,
Exception exception,
ServiceFilterResponse response) {
if (exception == null) {
ShowMessage("Success");
} else {
ShowMessage("Failed");
}
}
});
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
In my case, it looked like the key (parameter 2 in MobileServiceClient constructor) was incorrect. That is how I had downloaded it though. It happened again today and I manually fixed the key and it worked for another service. Believe it was the same issue here. To view your key, you go to your service in Azure and click Manage Keys at the bottom.
I have been able to successfully cast video to a Chromecast and have the option let the video play when disconnecting and it all works great. However, if I choose to quit the application and let the video continue playing and then try to re-join the currently playing session and try to use the RemoteMediaPlayer to control the video I am getting: "java.lang.IllegalStateException: No current media session".
Just as a background, I am saving the route id and session id on the initial connect into preferences and am able to successfully call "Cast.CastApi.joinApplication" and when in the onResult I am recreating the Media Channel and setting the setMessageReceivedCallbacks like so:
Cast.CastApi.joinApplication(mApiClient,"xxxxxxxx",persistedSessionId).setResultCallback(new ResultCallback<Cast.ApplicationConnectionResult>() {
#Override
public void onResult(Cast.ApplicationConnectionResult applicationConnectionResult) {
Status status = applicationConnectionResult.getStatus();
if (status.isSuccess()) {
mRemoteMediaPlayer = new RemoteMediaPlayer();
mRemoteMediaPlayer.setOnStatusUpdatedListener(
new RemoteMediaPlayer.OnStatusUpdatedListener() {
#Override
public void onStatusUpdated() {
Log.d("----Chromecast----", "in onStatusUpdated");
}
});
mRemoteMediaPlayer.setOnMetadataUpdatedListener(
new RemoteMediaPlayer.OnMetadataUpdatedListener() {
#Override
public void onMetadataUpdated() {
Log.d("----Chromecast----", "in onMetadataUpdated");
}
});
try {
Cast.CastApi.setMessageReceivedCallbacks(mApiClient,mRemoteMediaPlayer.getNamespace(), mRemoteMediaPlayer);
} catch (IOException e) {
Log.e("----Chromecast----", "Exception while creating media channel", e);
}
//-----------RESOLUTION START EDIT------------------
mRemoteMediaPlayer.requestStatus(mApiClient).setResultCallback(new ResultCallback<RemoteMediaPlayer.MediaChannelResult>() {
#Override
public void onResult(RemoteMediaPlayer.MediaChannelResult mediaChannelResult) {
Status stat = mediaChannelResult.getStatus();
if(stat.isSuccess()){
Log.d("----Chromecast----", "mMediaPlayer getMediaStatus success");
// Enable controls
}else{
Log.d("----Chromecast----", "mMediaPlayer getMediaStatus failure");
// Disable controls and handle failure
}
}
});
//-----------RESOLUTION END EDIT------------------
}else{
Log.d("----Chromecast----", "in status failed");
}
}
}
If I declare the RemoteMediaPlayer as static:
private static RemoteMediaPlayer mRemoteMediaPlayer;
I can join the existing session as well as control the media using commands like:
mRemoteMediaPlayer.play(mApiClient);
or
mRemoteMediaPlayer.pause(mApiClient);
But once I quit the application obviously the static object is destroyed and the app produces the aforementioned "No current media session" exception. I am definitely missing something because after I join the session and register the callback perhaps I need to start the session just like it was creating when I initially loaded the media using mRemoteMediaPlayer.load(.
Can someone please help as this is very frustrating?
The media session ID is part of the internal state of the RemoteMediaPlayer object. Whenever the receiver state changes, it sends updated state information to the sender, which then causes the internal state of the RemoteMediaPlayer object to get updated.
If you disconnect from the application, then this state inside the RemoteMediaPlayer will be cleared.
When you re-establish the connection to the (still running) receiver application, you need to call RemoteMediaPlayer.requestStatus() and wait for the OnStatusUpdatedListener.onStatusUpdated() callback. This will fetch the current media status (including the current session ID) from the receiver and update the internal state of the RemoteMediaPlayer object accordingly. Once this is done, if RemoteMediaPlayer.getMediaStatus() returns non-null, then it means that there is an active media session that you can control.
As user3408864 pointed out, requestStatus() after rejoining the session works. Here is how i managed to solve it in my case and it should work in yours.
if(MAIN_ACTIVITY.isConnected()){
if(MAIN_ACTIVITY.mRemoteMediaPlayer == null){
MAIN_ACTIVITY.setRemoteMediaPlayer();
}
MAIN_ACTIVITY.mRemoteMediaPlayer.requestStatus(MAIN_ACTIVITY.mApiClient).setResultCallback( new ResultCallback<RemoteMediaPlayer.MediaChannelResult>() {
#Override
public void onResult(RemoteMediaPlayer.MediaChannelResult mediaChannelResult) {
if(playToggle ==0){
try {
MAIN_ACTIVITY.mRemoteMediaPlayer.pause(MAIN_ACTIVITY.mApiClient);
playToggle =1;
} catch (IOException e) {
e.printStackTrace();
}
}else{
try {
MAIN_ACTIVITY.mRemoteMediaPlayer.play(MAIN_ACTIVITY.mApiClient);
playToggle =0;
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
}
Ignore, MAIN_ACTIVITY, it is just a static reference to my activity since i run this piece of code from a Service. Also, setRemoteMediaPlayer() is a method where i create a new RemoteMediaPlayer() and attach the corresponding Listeners.
Hopefully this helps. Also, sorry if any mistake, it is my first post to StackOverFlow.