2021.04.08

cmake

app/src/main/cpp/native-lib.cpp

@@ -0,0 +1,15 @@
+//
+// Created by Administrator on 2021/4/8.
+//
+#include <jni.h>
+#include <string>
+
+extern "C"
+JNIEXPORT jstring
+
+JNICALL
+Java_com_tt_ttutils_jni_NDKTools_getStringFromNDK(
+        JNIEnv *env, jobject /* this */) {
+    std::string hello = "Hello from C++";
+    return env->NewStringUTF(hello.c_str());
+}

app/src/main/java/com/tt/ttutils/jni/NDKTools.java

@@ -2,7 +2,8 @@ package com.tt.ttutils.jni;
 
 public class NDKTools {
     static {
-        System.loadLibrary("NDKTools-jni");
+//        System.loadLibrary("NDKTools-jni");
+        System.loadLibrary("native-lib");
     }
 
     public static native String getStringFromNDK();