I have been trying to call a Java method in unity. Not working for me, even the simplest example from the docs
using System.Collections;
using UnityEngine;
public class ExampleClass : MonoBehaviour {
void Start () {
AndroidJavaObject jo = new AndroidJavaObject ("java.lang.String", "some string");
int hash = jo.Call<int> ("hashCode");
Debug.Log ("hash=" + hash);
}
}
Unity console prints hash=0, which is not the hash code for provided String. Even if I change and use java.lang.StringInvalidClass as class name, unity still reports same result to the console without notifying errors. I can even try to call toString, toStringa, toInvalid2 and they always return empty string without showing errors.
This is a brand new 2d project with only script displayed above, attached to camara object. I am using Ubuntu, Unity 2019.4 and project platform is Android.
Thanks for the assistance.
Answering myself after some time working with unity.
All examples in the web and unity documentation doesn't mention it, which is weird since it is something simple to mention and about confusions: code needs to run as an android application. Editor or even unity remote does not work, in order to use AndroidJavaObject and related classes, your code needs to run as an android application installed in the phone.
Related
I've been trying to get IAP to work with my LibGDX game for Android for over 6 hours. First I tried to use gdx-pay, but sadly the documentation for it is very unclear to me and was therefore not able to get it to work.
Because my games are only for Android (for now) gdx-pay was overkill anyway, so I decided to directly implement Google Play IAP. I found a tutorial that is pretty clear, but sadly it doesn't explain where I should put the IInAppBillingService.aidl file.
I tried putting it in a newly created directory in the Android directory, namely /android/vending/billing, but that doesn't seem to work and the directory also doesn't show when I have my project view on Android.
I also tried creating a new package "andoird.vending.billing" in the java directory where the game package with the AndroidLauncher is in but that doesn't work either.
With both these methods I'm not able to import the class IabHelper in the following tutorial code which is in AndroidLauncher.java located in my game's package:
String base64EncodedPublicKey = "xxx";
// compute your public key and store it in base64EncodedPublicKey
mHelper = new IabHelper(this, base64EncodedPublicKey);
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result) {
if (!result.isSuccess()) {
// Oh noes, there was a problem.
Log.d("IAB", "Problem setting up In-app Billing: " + result);
}
// Hooray, IAB is fully set up!
Log.d("IAB", "Billing Success: " + result);
}
});
Where (and how) am I supposed to put the "IInAppBillingService.aidl" file to be able to import the IabHelper class in my LibGDX project? If you have a clearer tutorial on gdx-pay or on a technique similar to the one I'm using now I would also appreciate it.
Thanks in advance!
I have some new questions in today's citymaps development.
In the Android studio,if I develop the code for citymap, there are always no logs showing but for others that does not happen. Why?
According to the citymaps official website, to create a map instance with CitymapsMapFragment, but in the sample project which citymaps provides, it uses SupportCitymapsMpaFragment ,What is the difference between them?
When the map is loading complete, is it automatically positioning to the current position or some other default position? Where is it?
If I open the GPS location，I can locate to the current position and show a blue arrow quickly, but too much power consumption,are there any other location way like network or base station location?
Code follows:
CitymapsMapFragment fragment = (CitymapsMapFragment)fragmentManager.findFragmentById(R.id.map);
if (fragment != null) {
fragment.setMapViewListener(this);
}
I did not find the fragment have the method setMapViewListener but setMapViewReadyListener,does it right?
Other code:
CitymapsMapView mapView = new CitymapsMapView(this, options, this);
When I add animate in additional methods like this：
mapView.setMapPosition(position, 300, new MapViewAnimationListener() {
#Override
public void onAnimationEnd(boolean completed) {
Log.d("SomeApp", "Move Complete!");
}
});
the project fails and exits,I tried to surround the code with try-catch block to catch exception for purpose, but nothing shows in logcat view. Why?
I am developer on the Citymaps project. I will do my best to answer all your questions
1) If you are not receiving log statements, this is likely an issue with your own application, IDE, or device configuration. In our own application, which uses the Citymaps SDK, we have no issues with logging.
2) Prior to using the Citymaps SDK, it is highly advisable that you familiarize yourself with fragments, but the short version is that SupportCitymapsMapFragment extends from the Fragment class in the v4 support library.
3) It is up to you to set the default position the map.
4) If you create a class which implements from the LocationSource interface, and then call mapView.setLocationSource, you can modify the behaviors of the map's location services. For an example, have a look at CitymapsLocationSource.java, which is the default implementation for this interface used by the SDK.
As for the exception you are having, you have not provided nearly enough information. Please show a stack trace, and I may be able to help.
Thank you for using our SDK, feel free to post again with any more questions.
I am trying to write a simple piece of code that will execute some other code if true. What I want to do is check if my app is running on the 'Amazon Fire-TV (BOX, not the Fire-TV stick)' I think it would not be that hard to do but I am guessing it would be something like this?
String osName = android.getSystemOS();
if(!osName.equals("AMAZON FIRE-TV")){
Toast.makeText(MainActivity.class, "This app may not be compatible with your device..., Toast.LENGTH_LONG").show();
...
}
You can check any device name specifically using:
boolean isFireTV = Build.MODEL.equalsIgnoreCase("AFTB");
(see this page for FireTV model strings, and this one for Fire Tablets)
I'd also check out this answer for a more generic test to help you determine if your app is running on an Amazond device, or installed via the Amazon AppStore (eg on a Blackberry device)
the following function:
public static boolean isTV() {
return android.os.Build.MODEL.contains("AFT");
}
should detect either firetv or fire tv stick
see
https://developer.amazon.com/public/solutions/devices/fire-tv/docs/amazon-fire-tv-sdk-frequently-asked-questions
for details
I am not that new to Java Programming, but I have never worked with external libraries etc. Now I want to develop a desktop client for the "Telegram" open-source messaging platform, and I'm stuck when it comes to API-Usage.
There is pretty much documentation about the Telegram API, found at https://core.telegram.org/api, and I've already downloaded mtproto, telegram-api and tl-core from github, and compiled my own library jar from source by using gradle. As well, I've already written a small application, where the user clicks a button and is promted to enter his phone number, I'm using the Java-swing-Libraries and an ActionListener for this.
The phone number entered by the user should now be checked if it is already registered, the auth.checkPhone method seems to be capable for that. But how can I refer to it within my eclipse project? I don't see any method "checkPhone" in any of the classes! What should I do?
Please help me, I can't help myself and I am desperately stuck in my project. Even a small hint would help.
Thanks in Advance,
Lukas
Essentially you will have to fill out the blanks in the code given on GitHub in the ex3ndr/telegram-api repository. If you've got the library Jar file you built and the tl-api-v12.jarfile on your Eclipse project's Java build path, then look at the RPC Calls section of the README and
First you need to set up an AppInfo object with your API credentials, then you will also have to create some new classes that implement the AbsApiState and ApiCallback interfaces. Once these are available, you can create the TelegramApi object and make an RPC call to the Telegram service as follows; in this case using the suggested auth.checkPhone method:
// TODO set up AbsApiState, AppInfo and ApiCallback objects
TelegramApi api = new TelegramApi(state, appInfo, apiCallback);
// Create request
String phoneNumber = "1234567890";
TLRequestAuthCheckPhone checkPhone = new TLRequestAuthCheckPhone(phoneNumber);
// Call service synchronously
TLCheckedPhone checkedPhone = api.doRpcCall(checkPhone);
boolean invited = checkedPhone.getPhoneInvited();
boolean registered = checkedPhone.getPhoneRegistered();
// TODO process response further
The TelegramApi object represents your connection to the remote service, which is a request response style of API. RPC calls are made via the doRpcCall method, which takes a request object from the org.telegram.api.requests package (the TLRequestAuthCheckPhone type in the example) filled in with the appropriate parameters. A response object (TLCheckedPhone above) is then returned with the result when it is available.
In the case of an asynchronous call the method returns immediately, and the onResult callback method is executed when the result is available:
// Call service aynchronously
api.doRpcCall(checkPhone, new RpcCallbackEx<TLCheckedPhone>() {
public void onConfirmed() { }
public void onResult(TLCheckedPhone result) {
boolean invited = checkedPhone.getPhoneInvited();
boolean registered = checkedPhone.getPhoneRegistered();
// TODO process response further
}
public void onError(int errorCode, String message) { }
});
Or just look at this API https://github.com/pengrad/java-telegram-bot-api
It is really simple to use
I am developing J2ME application with lwuit and Codenameone and created it in lots of time. After I created it I wanted to deploy it in some devices like Nokia, Samsung, LG and etc. that they supported MIDP. So I figure out Nokia devices run it with no error and Samsung and other companies devices have some problems that I can't understand why?!
So I tried different way of creating this application. I used Codenameone wizard with blank theme and manual template and then I tried to deploy it. Well, that right. I got success and it ran in Samsung devices too.
After that I tried to add some forms to "theme" in this appliaction and run it in simulator. I changed some code in my main class like this:
public class Main extends UIBuilder {
private Form current;
public void init(Object context) {
try{
Resources theme = Resources.openLayered("/theme");
UIManager.getInstance().setThemeProps(theme.getTheme(theme.getThemeResourceNames()[0]));
}catch(IOException e){
e.printStackTrace();
}
}
public void start() {
if(current != null){
current.show();
return;
}
Form hi = findMain();//new Form("Hi World");
//hi.addComponent(new Label("Hi World"));
hi.show();
}
public void stop() {
current = Display.getInstance().getCurrent();
}
public void destroy() {
}
public com.codename1.ui.Form findMain() {
return (com.codename1.ui.Form)findByName("Main", Display.getInstance().getCurrent());
}}
I got error when I ran it.
So this is my questions:
I created one application in Visual Mode of Codenameone.
How can I run it in Samsung and some other devices like Samsung (without opertaing system, just support java or MIDP)?
How can I change my Visual Mode application to Manual Mode in Codenameone?
Thanks in advance.
You are deriving from UIBuilder within the lifecycle class and trying to use a finder method on something that isn't showing yet. There is absolutely no way that your code works in the simulator and it is not the code that was generated by the wizard.
Thanks Shai. For creating I did hard coding and create all of forms one by one.
I implement base Form that derive from com.codenameone.ui.Form and every forms derive from base Form.