Android Studio 3.5版本JNI生成SO文件详解

package com.journey.org;
 
 
public class JniHello{
    static {
        System.loadLibrary("JniHello")
    }
    
    public static native String welcomeJniStudy();
}

Program:$JDKPath$\bin\javah.exe
Arguments:-classpath . -jni -d $ModuleFileDir$/src/main/jni $FileClass$
Working directory:$ModuleFileDir$\src\main\java

Program:D:\workpalce\AndroidSDK\ndk-bundle\build\ndk-build.cmd // 安装ndk的路径
Arguments:
Working directory:$ModuleFileDir$\src\main

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_LDLIBS += -llog
LOCAL_LDLIBS +=-lm
LOCAL_MODULE := JniHello
LOCAL_SRC_FILES =: JniHello.cpp  # 实现c代码文件的名字
include $(BUILD_SHARED_LIBRARY)

APP_MODULES := JniHello
APP_ABI := all

#include "com_journey_org_JniHello.h"
 
JNIEXPORT jstring JNICALL Java_com_journey_org_JniHello_welcomeJniStudy(JNIEnv *env, jclass jclass){
    return env->NewStringUTF("welcome to study jni")
}

ndk{
        moduleName "JniHello"
        //abiFilters \"armeabi-v7a", "x86" //输出指定abi下的so库
    }
sourceSets.main {
        jni.srcDirs = []
        jniLibs.srcDir "src/main/libs"
    }