// find and trace all methods declared in a Java Class
var targetClass = 'org.awallet.ui.UnlockActivity';

    Java.perform(function() {
        var hook = Java.use(targetClass);
        var methods = hook.class.getDeclaredMethods();
        hook.$dispose;

        var parsedMethods = [];
        methods.forEach(function (method) {
            parsedMethods.push(method.toString().replace(targetClass + ".", "TOKEN").match(/\sTOKEN(.*)\(/)[1]);
        });

        var targets = uniqBy(parsedMethods, JSON.stringify);
        targets.forEach(function (targetMethod) {
            traceMethod(targetClass + "." + targetMethod);
        });
    });


// trace a specific Java Method
function traceMethod(targetClassMethod) {
	var delim = targetClassMethod.lastIndexOf(".");
	if (delim === -1) return;

	var targetClass = targetClassMethod.slice(0, delim);
	var targetMethod = targetClassMethod.slice(delim + 1, targetClassMethod.length);

	var hook = Java.use(targetClass);
	var overloadCount = hook[targetMethod].overloads.length;

	console.log("Tracing " + targetClassMethod + " [" + overloadCount + " overload(s)]");

	for (var i = 0; i < overloadCount; i++) {

		hook[targetMethod].overloads[i].implementation = function() {
			console.warn("\n*** entered " + targetClassMethod);

			// print backtrace
			// Java.perform(function() {
			//	var bt = Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Exception").$new());
			//	console.log("\nBacktrace:\n" + bt);
			// });

			// print args
			if (arguments.length) console.log();
			for (var j = 0; j < arguments.length; j++) {
				console.log("arg[" + j + "]: " + arguments[j]);
			}
			// print retval
			var retval = this[targetMethod].apply(this, arguments); // rare crash (Frida bug?)
			console.log("\nretval: " + retval);
			console.warn("\n*** exiting " + targetClassMethod);
			return retval;

		}
	}
}

// remove duplicates from array
function uniqBy(array, key) {
        var seen = {};
        return array.filter(function(item) {
                var k = key(item);
                return seen.hasOwnProperty(k) ? false : (seen[k] = true);
        });
}