I am creating an app showing local events for android. I was hoping to use the Eventful API, since that came with its own java-based client library. However, I'm not sure if it's fit for Android, since I know a lot of these java based client libraries use stuff Android doesn't support.
So, does anybody know if it works?
My entire project is available # github if you want to check it out for yourself.
The API is found here.
Android does not have have issues with Java client libraries. It is build on top of standard Java, and can use all of the framework features.
Furthermore, it looks like this API offers a RESTful interface, which is for sure supported by Android.
Bottom line, I do think you can use this API in Android without issue.
I'd say the easiest way is to compile and run an application that embeds the library and tests a few methods.
Typically, you may have issues with the way the networking is handled. There are 2 main ways in android to do HTTP, the Java and the Apache way, I think the Java URL API is fully supported and very close to the actual Java version, but the Apache has some hidden differences.
The main risks you'll have are A/ that it uses classes or packages that are not present on Android. B/ that a class does not behave as expected, which does happen from time to time, as the Android implementation is entirely specific.
Apparently you have already tried to run an android app with the library included? Did you encounter a specific error? If you, can you post the stacktrace?
Related
(I am newer of stack overflow user and sorry for my poor English.)
I am using WebRtc Android SDK to create a chat app, and our team decides to use
simulcast to deal with various abilities of participants. However, when I come to the SDK APIs, I can not find a way to use simulcast.
I use the SDK with offical-recommended manner:
implementation 'org.webrtc:google-webrtc:1.0.+'
(The concrete version is 1.0.28513.)
I have googled much and found some code fragment like this:
RtpTransceiver.RtpTransceiverInit transceiverInit =
new RtpTransceiver.RtpTransceiverInit(peerConnectionParameters.transDirection, mediaStreamLabels
/*, encodings*/ // cannot create Encoding instances
);
...
peerConnection.addTransceiver(MediaStreamTrack.MediaType.MEDIA_TYPE_VIDEO, transceiverInit);
However, when I try to create Encoding instances，I found the Encoding's constructor cannot be accessed, it is package access limit.
By the way, I have tried using reflection to forcibly create Encoding instances.
But it will cause an error when this code executes as might have been expected:
peerConnection.addTransceiver(MediaStreamTrack.MediaType.MEDIA_TYPE_VIDEO, transceiverInit);
I have also gone through the SDK APIs, and cannot find any other way to set up the simulcast.
So how should I use simulcast with webrtc android SDK?
Not all Java Packages are part of Android but is there a way to gain access to them through some work around? Purely as an example javax.sound is one such class. Yes Android has classes to do the same thing but if we already had the working Java written, rewriting it all using Android APIs is not ideal.
Is there any way to use the Java API or do we have to use the Android API?
No, not all Java libraries have been ported to Android. You will need to use the Android-specific implementation, especially for things that deal with the hardware layer or require a specific technology stack, such as audio libraries.
Yep totally you can but it depending on which libs that you want to use for example you cant use databases drivers in your android apps, neither UI libs , but you can use gson for example
I've been working on a writing a game for Android. Until now I've been using Java instead of the NDK, but I've decided to port my code to C++ (for performance, memory management and industry standards reasons).
Porting my application shouldn't be a problem (I've written my fair share of C++ applications), but I've been using RoboGuice as a dependency injection framework because otherwise my object graph would become too complex rather quickly.
I've been looking around, but I haven't found any resources about using a dependency injection framework in combination with the Android NDK.
Can someone tell me if there any such franeworks available. If so, which one would you recommend?
If you have a C++11 compiler for Android you could use several frameworks (I wrote Infectorpp) but there are others available. You should note that DI is quite limited in C++ due to the lack of reflection so you should make some compromises as not everything you did in RoboGuice would still be possible.
By doing a quick search seems that C++11 is possible on Android. I don't have an Android device and still not needed to emulate it, but if you have any feedback it will be wellcome (private message here or support ticket on google code is enough), the library is headers only so no special build stuff is required for it, apart enabling c++11 on your compiler wich is just one extra option by command line. If that will works good on Android then it will be definitely good also for PC. (Do not misunderstand please, I'm using it heavily, but seems very few people is interested in DI in C++ and so I get very little feedback)
There was also a nice framework cpp-resolver: a little awkard to use because you explicitly register factory functions for injecting ALL parameters, but very scalable, especially for server applications.. (decouple object lifetime management and works with plain old C++).
The most complete framework is probably wallaroo
If you search something really easy to use Infectorpp is a good choice
If you need control over lifetime (mostly servers): Cpp-resolver is perfect
If you need exotic features and configuration files: wallaroo
As side note, run-time configuration is possible also with frameworks that do not explicitly support it:
You just need a Factory that istantiate a different type based on a configuration file you could read through a class that you add as dependency to factories (Probably you don't need to know that since you were already using DI frameworks, but still good to know for occasional readers)
I need to create an API library for Android and iOS. I have experience working with Android projects, but zero experties in iOS. I was wondering if I could create a Project library in Xamarin that compiles as a JAR for Android and as an... I-don't-know-which-type for iOS.
No, that isn't possible. Depending on what you are trying to accomplish there may be alternatives. If you are trying to make a library that can be used by others you could make it a Xamarin component - there is a component store you could put it on if you want it to be generally available, otherwise you can use any normal means of source or object distribution.
If you need to interact with a native app/library then you could make the C# code the "owner" of it and have it call into the native code. This works for both IOs and Android (and is used to work with e.g the play services from google).
No, it is unfortunately not possible to do that.
It seems to me that what you need is a Portable Class Library also known as PCL. It allows you to create a project which can be referenced by all Xamarin supported platforms (such as iOs and Android). There are obviously limitations to the approach like not being able to reference platform specific libraries but in your case (of writing an API) it should suffice.
You can read more in this link
Good Luck!
Is there a handy-dandy equivalent to org.apache.commons.beanutils.PropertyUtils on Android?
I can't seem to use bean utils in my android app due to some dependencies on PropertyDescriptor,and IndexedPropertyDescriptor. So I'm wondering if there are any alternatives?
Basically all I want to do is use a method name as a string "someMethod" and feed that into setMethod(anObject, "someMethod", value), much like PropertyUtils does; but without having to resort to the nasties of reflection...
Or are my hands tied and I need to use Reflection?
There is bridge library which works on Android: android-java-air-bridge.jar. Just include into project path and use all apache beanutils features in your Android project as you could use in ordinary java application. Moreover, there are lot of other classes which moved to this Android supporting library. Look at the list.
There is a possibilty to use libraries or write own code depending on the PropertyUtils. But it sure isn't dandy. You can get the general idea about what has to be done in this thread.
There are apparently some projects who have successfully solved the issue, so you can study thier solution. Take a look at Drawingpad-base and libgdx. You can find PropertyUtils in the package com.madrobot.beans in the first project and com.badlogic.gdx.beans in the second.