AARs) into multiple interdependent Bindings Libraries.ĮmbeddedReferenceJar – Embeds a reference. This build action is useful for packaging multiple. Use this option when you will make a Bindings Library for the reference. jar and it is not embedded in the resulting Bindings Library. When you use this build action, C# bindings are not created for the reference. jar is used only to satisfy compile-time dependencies. Use this option when you want to embed an. This is similar to EmbeddedJar, except that you can access resources (as well as code) in the bound. AAR file into the resulting Bindings Library. jar is available on the device that runs your app. If you use this option, you must ensure that the input. jar in your Bindings Library (for example, for licensing reasons). Use this option when you do not want to include the. jar automatically compiled into byte code and packaged into the Bindings Library. This is the simplest and most commonly-used build action. jar into the resulting Bindings Library DLL as an embedded resource. AAR file will be embedded into (or referenced by) your Bindings Library. AAR files that you incorporate into your Bindings Library project – each build action determines how the. When you create a Bindings Library, you set build actions on the. If possible, recompile the Android library using the same version of the JDK that is used by your installation of Xamarin.Android. What version of the JDK was used to compile the library? – Binding errors may occur if the Android library was built with a different version of JDK than in use by Xamarin.Android. What version of the Android API does the Android library target? – It is not possible to "downgrade" the Android API level ensure that the Xamarin.Android binding project is targeting the same API level (or higher) as the Android library. Any native assemblies must be added to the binding project as an EmbeddedNativeLibrary. When binding an existing Android library, it is necessary to keep the following points in mind:Īre there any external dependencies for the library? – Any Java dependencies required by the Android library must be included in the Xamarin.Android project as a ReferenceJar or as an EmbeddedReferenceJar. Then you would put the following using statement at the top of your C# source files to access types in the bound. For example, if the Java package name for your bound. NET namespace version of the Java package name. Typically, you add a using directive at the top of your C# source files that is the. When you reference types in your Binding Library, you must use the namespace of your binding library. By referencing the resulting Bindings Library DLL assembly, you can reuse an existing Java library in your Xamarin.Android project. You can also create Bindings Libraries for Android Archive (.AAR) files and Eclipse Android Library projects. jar file(s), and resources for Android Library projects embedded in it. To create this Bindings Library, you use the Xamarin.Android Java Bindings Library template. jar that contains M圜lass, we can instantiate it and call methods on it from C#: var instance = new M圜lass () For example, here is a Java type, M圜lass, that we want to wrap in a Bindings Library: package Īfter we generate a Bindings Library for the. This architecture is illustrated in the following diagram:Ī Bindings Library is an assembly containing Managed Callable Wrappers for Java types. Likewise, whenever Android runtime (ART) code wishes to invoke managed code, it does so via another JNI bridge known as Android Callable Wrappers (ACW). Managed callable wrappers also provide support for subclassing Java types and for overriding virtual methods on Java types. MCW is a JNI bridge that is used when managed code needs to invoke Java code. Xamarin.Android implements bindings by using Managed Callable Wrappers ( MCW). This guide explains the first option: how to create a Bindings Library that wraps one or more existing Java libraries into an assembly that you can link to in your application. JNI is a programming framework that enables Java code to call and be called by native applications or libraries. Use the Java Native Interface ( JNI) to invoke calls in Java library code directly. Xamarin.Android offers two ways to use these libraries:Ĭreate a Bindings Library that automatically wraps the library with C# wrappers so you can invoke Java code via C# calls. Because of this, it frequently makes sense to use an existing Android library than to create a new one. The third-party library ecosystem for Android is massive. The Android community has many Java libraries that you may want to use in your app this guide explains how to incorporate Java libraries into your Xamarin.Android application by creating a Bindings Library.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |