I am trying to import the Java Instrumentation library (java.lang.instrument) https://docs.oracle.com/javase/7/docs/api/java/lang/instrument/Instrumentation.html in my Android Studio project but it is complaining that it isn't able to find it.
From what I understand, this library should be built in to Java. While typing in java.lang, I do see existing classes under that package.
Does anyone know how I can use this specific class in Android Studio?
I have tried looking into the Gradle file where dependencies are declared but I am confused as java.lang is built into Java.
I was expecting the java.lang package in Android Studio to contain the Instrument class.
Related
I am switching from NetBeans to VS Code Java on Linux and I am unable to run or build my projects. I get error: cannot find symbol for every class declaration or external package usage.
How do I build all the .java classes in a project folder, not just the currently opened one?
How can I import .jar in VS code?
Is it possible to have a project in Android Studio with the possibility of changing the package name for the app easily, so I can compile it with a package name or with the other (or both at the same time) according to my needs?
You can use Build Variants to facilitate this easily.
I've been trying to use the library SoundTouch in my android app in order to change the tempo of an mp3 file.
I've managed to compile the library following the steps outlined here: http://www.surina.net/soundtouch/README-SoundTouch-Android.html
My question now is how do I import and use the compiled library in my android project in Eclipse?
From following the steps in the link above I've ended up with .so files that I've added into the libs folder of my project. I've also changed the build path to include this new library.
The library is now showing up under "referenced libraries" so I'm guessing I'm some where on the right track?
In my java file I've tried importing the library like this:
static
{
System.loadLibrary("soundtouch");
}
The program builds and runs fine but I don't think the library is actually being loaded as I can't reference any of soundTouch's methods.
Any help would be much appreciated!
The JNI file provided with the SoundTouch library is merely a demonstration and does not provide any means of using any of SoundTouch's features in an Android app from Java.
I am working on developing a game for Android and I have a lot of the code written on a java application. I would like to use the classes and methods in the Java application within my Android application. I am using Eclipse to develop my application so I tried to create a Jar for the Java application By doing: Right click project->Export->Jar I then saved the jar somewhere and added the jar to my Android buildpath. When I try to use methods from that jar I get compilation errors because Eclipse cant find the methods. Am I supposed to have any import statements? The name of the package on my java app is (default package) so I am not sure what the import statement would be. I would appreciate any help.
EDIT: I changed the package name of my application so that I could import the classes within it and that got rid of the compilation errors. When I try to run the project I now get NoClassDefFoundError Could it be that I am exporting the jar for my Java application wrong?
Open Project properties -> Java Build Path -> Order and Report tab.
Try to check jar check boxes,
see example:
To make sure that you created jar properly, here other snapshot of jar export:
Rename the package first. http://docs.oracle.com/javase/tutorial/java/package/namingpkgs.html
Yes, you need to import the package inorder to use in a class. Else the compiler will not identify the codes. Import the jar into build path and import the package into the Java code as :
import java.util.HashMap;
If I understand your correctly you exporting a Java .jar (built using Java compiler)? As far as I know Android does not understand Java bytecode though the compiler for Android understands Java source code.
I'd suggest you just put all that source files in the Android project and compile them there, hopefully you aren't using functions that Android API does not have.
In a Java project I am using a class that is in an Android project and uses an android View object. When I try and use that class in the non-android project I get a no class found error at runtime. How can I import android.widget.view.View into a non-android project? Can I add it to my project build?
Without the android platform runtime, ie.. DalvikVM, etc... you will not be able to run any of the framework necessary to render "Views" in your Java project. Did you think of that?. But to get it coded you would at least need to import Android.jar into your Java project build path. It will likely find the Widget package, but the Widget package will be looking for the Android SDK, etc...
What does android.widget.View give you outside of the Android environment??