4/2

app/build.gradle

@@ -14,6 +14,10 @@ android {
         versionName "1.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        ndk {
+            abiFilters 'armeabi-v7a', 'arm64-v8a'
+        }
+
     }
 
     buildTypes {
@@ -27,6 +31,12 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+
+    externalNativeBuild {
+        cmake {
+            path file('src/main/cpp/CMakeLists.txt')
+        }
+    }
 }
 
 dependencies {

app/src/main/cpp/CMakeLists.txt

+cmake_minimum_required(VERSION 3.10.2)
+
+project(Demo)
+
+add_library(
+        demo
+        SHARED
+        main.c
+)
+
+target_link_libraries(demo)
\ No newline at end of file

app/src/main/cpp/main.c

+//
+// Created by Fear1ess on 2021/4/2.
+//
+
+int xx(int a, int b) {
+    return a + b;
+}
\ No newline at end of file

app/src/main/java/com/reyun/sdktestdemo/MainActivity.java

@@ -7,16 +7,12 @@ import android.widget.TextView;
 
 public class MainActivity extends AppCompatActivity {
 
-    // Used to load the 'native-lib' library on application startup.
-    static {
-        System.loadLibrary("native-lib");
-    }
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
+
         // Example of a call to a native method
         TextView tv = findViewById(R.id.sample_text);
         tv.setText("hello world!");

wandun/src/main/cpp/CMakeLists.txt

@@ -13,17 +13,23 @@ elseif (${CMAKE_ANDROID_ARCH_ABI} STREQUAL "armeabi-v7a")
             wd_syscall32.s)
 endif()
 
-set(CMAKE_CXX_FLAGS_RELEASE "-fvisibility=hidden -O3 -fno-unwind-tables -flto")
-
 add_library(
         wdun
         SHARED
         core.c
+        collect.c
+        utils.c
         wd_syscall.c
         jni_helper.c
         ${ARCH_DEPENDED_SRC}
 )
 
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  \
+            -fvisibility=hidden \
+            -fno-unwind-tables  \
+            -Wl,--exclude-libs,ALL  \
+            -Wl,--gc-sections")
+
 add_library(cJson SHARED IMPORTED)
 set_target_properties(
         cJson

wandun/src/main/cpp/collect.c

+//
+// Created by Fear1ess on 2021/4/2.
+//
+
+#include "collect.h"
+#include "jni_helper.h"
+#include "utils.h"
+
+extern jobject g_app_context;
+
+cJSON *collect_init() {
+    return cJSON_CreateObject();
+}
+
+void do_collect(JNIEnv* env) {
+    cJSON* json =  collect_init();
+    collect_app_info(env, json);
+}
+
+void collect_app_info(JNIEnv* env, cJSON *json) {
+    //package_name
+    jobject pkgName = wdCallObjectMethod(env, g_app_context, "getPackageName", "()Ljava/lang/String;");
+    addJniStringToJson(env, json, "package_name", pkgName);
+
+    //get packagemanager and pkginfo
+    jobject pkgManager = wdCallObjectMethod(env, g_app_context, "getPackageManager", "()Landroid/content/pm/PackageManager;");
+    jobject pkgInfo = wdCallObjectMethod(env, pkgManager, "getPackageInfo", "(Ljava/lang/String;I)Landroid/content/pm/PackageInfo;", pkgName, 0);
+
+    //last update time
+    jlong lastUpdateTime = wdGetLongField(env, pkgInfo, "lastUpdateTime", "J");
+    cJSON_AddNumberToObject(json, "last_update_time", lastUpdateTime);
+
+    const char* info = cJSON_Print(json);
+    (*env)->DeleteLocalRef(env, pkgName);
+    return;
+}
+

wandun/src/main/cpp/core.c

@@ -6,25 +6,39 @@
 #include <syscall.h>
 #include "wdun.h"
 #include "cJSON.h"
+#include "jni_helper.h"
+#include "collect.h"
 
 //import asm symbol
 IMPORTWDSYSCALL
 
-#define WDMAIN_CLASS_NAME "com/reyun/wandun/WdMain"
-#define WDMAIN_GETWDID_METHOD_NAME "getWdIdNative"
-#define WDMAIN_GETWDID_METHOD_SIG "()Ljava/lang/String;"
+#define WDMAIN_CLASS_NAME              "com/reyun/wandun/WdMain"
+#define WDMAIN_GETWDID_METHOD_NAME     "getWdIdNative"
+#define WDMAIN_GETWDID_METHOD_SIG      "()Ljava/lang/String;"
+#define WDMAIN_INIT_METHOD_NAME        "initNative"
+#define WDMAIN_INIT_METHOD_SIG         "(Landroid/content/Context;)V"
 
-jstring jni_get_wdid(JNIEnv* env, jobject thiz) {
+jobject g_app_context = NULL;
 
+JNIEXPORT jstring jni_get_wdid(JNIEnv* env, jobject thiz) {
+    do_collect(env);
+}
+
+JNIEXPORT void jni_init(JNIEnv* env, jobject thiz, jobject context) {
+    if(!g_app_context) {
+        g_app_context = (*env)->NewGlobalRef(env, context);
+    }
 }
 
 JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
     int pid = WDSYSCALL(SYS_getpid);
     JNIEnv* env = NULL;
-    if((*vm)->GetEnv(vm, (void**)&env, JNI_VERSION_1_6) == JNI_TRUE) {
+    if((*vm)->GetEnv(vm, (void**)&env, JNI_VERSION_1_6) == JNI_OK) {
         jclass cls = (*env)->FindClass(env, WDMAIN_CLASS_NAME);
-        JNINativeMethod methods[] = {{WDMAIN_GETWDID_METHOD_NAME, WDMAIN_GETWDID_METHOD_SIG, (void*)jni_get_wdid}};
+        JNINativeMethod methods[] = {{WDMAIN_GETWDID_METHOD_NAME, WDMAIN_GETWDID_METHOD_SIG, (void*)jni_get_wdid},
+                                     {WDMAIN_INIT_METHOD_NAME, WDMAIN_INIT_METHOD_SIG, (void*)jni_init}};
         (*env)->RegisterNatives(env, cls, methods, sizeof(methods)/sizeof(JNINativeMethod));
+        (*env)->DeleteLocalRef(env, cls);
     }
     cJSON* json = cJSON_CreateObject();
     cJSON_AddStringToObject(json, "name", "zhanglei");

wandun/src/main/cpp/include/collect.h

+//
+// Created by Fear1ess on 2021/4/2.
+//
+
+#ifndef REYUNSDK_COLLECT_H
+#define REYUNSDK_COLLECT_H
+
+#include <jni.h>
+#include "cJSON.h"
+
+void do_collect(JNIEnv* env);
+cJSON* collect_init();
+void collect_app_info(JNIEnv* env, cJSON* json);
+
+#endif //REYUNSDK_COLLECT_H

wandun/src/main/cpp/include/utils.h

+//
+// Created by Fear1ess on 2021/4/2.
+//
+
+#ifndef REYUNSDK_UTILS_H
+#define REYUNSDK_UTILS_H
+
+#include "cJSON.h"
+
+void addJniStringToJson(JNIEnv* env, cJSON* json, const char* key, jobject jstr);
+
+#endif //REYUNSDK_UTILS_H

wandun/src/main/cpp/utils.c

+//
+// Created by Fear1ess on 2021/4/2.
+//
+
+#include <jni.h>
+#include "cJSON.h"
+#include "utils.h"
+
+void addJniStringToJson(JNIEnv *env, cJSON *json, const char *key, jobject jstr) {
+    jboolean value = 0;
+    const char* package_name = (*env)->GetStringUTFChars(env, jstr, &value);
+    cJSON_AddStringToObject(json, key, package_name);
+    (*env)->ReleaseStringUTFChars(env, jstr, package_name);
+}

wandun/src/main/java/com/reyun/wandun/WdMain.java

@@ -26,6 +26,7 @@ public class WdMain {
 
         //load native lib
         System.loadLibrary("wdun");
+        initNative(context);
 
         //todo 监控传感器数据变化
         //todo 监控手机信号强度变化
@@ -44,6 +45,10 @@ public class WdMain {
         cb.onWdId(wdId);
     }
 
+    public native void initNative(Context context);
+
     //native层获取wdId
     public native String getWdIdNative();
+
+
 }