On Dec 7, 2011, at 11:16 AM, Josh Handel wrote:
> I am working on trying to wrap the Flurry API… Flurry uses static methods for
> all of its calls.. I haven’t seen/figured out how to call static methods thru
> JNI
JNI differentiates between instance and static members, so to lookup a static
method you need JNIEnv.GetStaticMethodID():
http://androidapi.xamarin.com/?link=M:Android.Runtime.JNIEnv.GetStaticMethodID
Similarly, to invoke the method you'll need e.g.
JNIEnv.CallStaticObjectMethod():
http://androidapi.xamarin.com/?link=M:Android.Runtime.JNIEnv.CallStaticObjectMethod
> or (better) use the new Register stuff to wrap the Flurry class (specificly
> its static methods).
[Register] isn't used to implement the method invocation. [Register] is used to
permit subclassing, interface implementation, and overriding/implementing
class/interface methods. (It's used to control Android Callable Wrapper
generation, i.e. Java generation, and thus doesn't do anything for the C# code
you need to write.)
> I can locate the class via JNI or Java.Lang.Class.FromName() but given these
> are static methods not instance methods I’m not sure where to go next..
>
> FlurryAgent.onStartSession(Context,"key");
As always, use `javap -s ...` to determine the correct JNI signature. I'll just
guess for demonstration purposes, though:
IntPtr FlurryAgent_Class = JNIEnv.FindClass ("package/of/FlurryAgent");
IntPtr FlurryAgent_onStartSession = JNIEnv.GetStaticMethodID
(FlurryAgent_Class,
"onStartSession",
"(Landroid/content/Context;Ljava/lang/String;)V");
JNIEnv.CallStaticVoidMethod (FlurryAgent_Class,
FlurryAgent_onStartSession,
new JValue (Context), new JValue ("key"));
> FlurryAgent.onStopSession(Context);
IntPtr FlurryAgent_onStopSession = JNIEnv.GetStaticMethodID
(FlurryAgent_Class,
"onStartSession", "(Landroid/content/Context;)V");
JNIEnv.CallStaticVoidMethod (FlurryAgent_Class,
FlurryAgent_onStopSession,
new JValue (Context));
- Jon
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