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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Android error: missing method body, or declare abstract","articleBody":"I'm trying to run the Android example found in BridJ/Examples/AndroidExample. I am able to get dependencies resolved after downloading BridJ and using maven to build it successfully. I place the generated bridj-0.7.1-SNAPSHOT-andorid.jar in app/libs, and I place everything under BridJ/src/main/android-libs in app/src/main/jniLibs. I copy the files in BridJ/Examples/AndroidExample/ to my Android project. All of the BridJ dependencies are resolved.\r\n\r\nThe problem is that MainActivity won't compile. The error on \r\n\r\n`public static void helloLog(Pointer\u003cByte\u003e logThis);`\r\n\r\nsays \"Missing method body, or declare abstract\". If I declare the method to be native, then I get the following runtime error.\r\n\r\n`java.lang.UnsatisfiedLinkError: No implementation found for void yada.yada.yada.MainActivity.helloLog(org.bridj.Pointer) (tried Java_yada_yada_yada_MainActivity_helloLog and Java_yada_yada_yada_MainActivity_helloLog__Lorg_bridj_Pointer_2)`\r\n\r\n I haven't added or removed anything from MainActivity.java, but for what it's worth, I'm pasting the source for that below. Any ideas?\r\n\r\n\tpackage yada.yada.yada;\r\n\r\n\timport android.app.Activity;\r\n\timport android.os.Bundle;\r\n\timport android.util.Log;\r\n\r\n\timport java.io.IOException;\r\n\r\n\timport org.bridj.BridJ;\r\n\timport org.bridj.NativeLibrary;\r\n\timport org.bridj.Pointer;\r\n\timport org.bridj.ann.Library;\r\n\timport org.bridj.demangling.Demangler.Symbol;\r\n\r\n\timport static org.bridj.Pointer.pointerToCString;\r\n\r\n\tpublic class MainActivity extends Activity {\r\n\r\n\t\tstatic final String TAG = MainActivity.class.getName();\r\n\r\n\t\t@Library(\"example\")\r\n\t\tpublic static void helloLog(Pointer\u003cByte\u003e logThis);\r\n\r\n\t\tstatic {\r\n\t\t\tBridJ.register();\r\n\t\t}\r\n\r\n\t\t@Override\r\n\t\tprotected void onCreate(Bundle savedInstanceState) {\r\n\t\t\tsuper.onCreate(savedInstanceState);\r\n\t\t\thelloLog(pointerToCString(\"Hello, World!\"));\r\n\t\t\ttry {\r\n\t\t\t\tNativeLibrary lib = BridJ.getNativeLibrary(\"example\");\r\n\t\t\t\tfor (Symbol s : lib.getSymbols()) {\r\n\t\t\t\t\tString p = s.getParsedRef() + \"\";\r\n\t\t\t\t\tSystem.out.println(p);\r\n\t\t\t\t}\r\n\t\t\t} catch (IOException e) {\r\n\t\t\t\tthrow new RuntimeException(\"BridJ loading failed?\", e);\r\n\t\t\t}\r\n\t\t\tsetContentView(R.layout.activity_main);\r\n\t\t}\r\n\t}\r\n","author":{"url":"https://github.com/martinkbrown","@type":"Person","name":"martinkbrown"},"datePublished":"2016-12-12T14:07:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/575/nativelibs4java/issues/575"}