From cf9f98acbf30ed23e217d975e53ecd6ac47a3412 Mon Sep 17 00:00:00 2001
From: richie <richie@fanruan.com>
Date: Thu, 1 Aug 2019 19:31:06 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E4=BA=A4?=
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---
 native/mylib/src/lib.rs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/native/mylib/src/lib.rs b/native/mylib/src/lib.rs
index c886a8c..8606502 100644
--- a/native/mylib/src/lib.rs
+++ b/native/mylib/src/lib.rs
@@ -9,7 +9,9 @@ use jni::objects::{JClass, JString};
 // This is just a pointer. We'll be returning it from our function. We
 // can't return one of the objects with lifetime information because the
 // lifetime checker won't let us.
-use jni::sys::jstring;
+use jni::sys::{jstring, jint};
+
+use std::any::Any;
 // This keeps rust from "mangling" the name and making it unique for this
 // crate.
 #[no_mangle]
@@ -33,4 +35,10 @@ pub extern "system" fn Java_HelloWorld_hello(env: JNIEnv,
         .expect("Couldn't create java string!");
     // Finally, extract the raw pointer to return.
     output.into_inner()
-}
\ No newline at end of file
+}
+
+#[no_mangle]
+#[allow(non_snake_case)]
+pub extern "system" fn Java_MyMath_add(env: JNIEnv, class: JClass, a: jint, b: jint) -> jint {
+    return a + b;
+}