init

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

+package com.reyun.sdktestdemo;
+
+import android.app.Application;
+import android.util.Log;
+
+import com.reyun.wandun.WdCallback;
+import com.reyun.wandun.WdMain;
+
+public class MyApplication extends Application {
+    public static String TAG = "reyunsdk_demo";
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        //初始化sdk环境
+        WdMain wm = WdMain.getInstance();
+        wm.init(this, "test-a341fsfr3123ddadfs");
+
+        //同步获取唯一id
+        wm.getWdId(new WdCallback() {
+            @Override
+            public void onWdId(String wdId) {
+                Log.d(TAG, "onWdId: " + wdId);
+            }
+
+            /*
+            @Override
+            public void onError(String errorMsg) {
+                Log.d(TAG, "onError: " + errorMsg);
+            }*/
+        });
+    }
+}

wandun/src/main/java/com/reyun/wandun/Md5Utils.java

+package com.reyun.wandun;
+
+import android.os.Message;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class MdUtils {
+    public static String md5(String data) {
+        try {
+            MessageDigest md = MessageDigest.getInstance("md5");
+            byte[] result = md.digest(data.getBytes());
+            return bytes2HexString(result);
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    private static byte charToByte(char c) {
+        return (byte) "0123456789abcdef".indexOf(c);
+    }
+
+    public static byte[] hexString2Bytes(String hex) {
+        int len = (hex.length() / 2);
+        byte[] result = new byte[len];
+        char[] achar = hex.toCharArray();
+        for (int i = 0; i < len; i++) {
+            int pos = i * 2;
+            result[i] = (byte) (charToByte(achar[pos]) << 4 | charToByte(achar[pos + 1]));
+        }
+        return result;
+    }
+
+    public static String bytes2HexString(byte[] byteArray) {
+        if (byteArray == null) {
+            return null;
+        }
+        char[] hexArray = "0123456789ABCDEF".toCharArray();
+        char[] hexChars = new char[byteArray.length * 2];
+        for (int j = 0; j < byteArray.length; j++) {
+            int v = byteArray[j] & 0xFF;
+            hexChars[j * 2] = hexArray[v >>> 4];
+            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
+        }
+        return new String(hexChars);
+    }
+}

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

 package com.reyun.wandun;
 
 public interface WdCallback {
-    String onWdId(String wdId);
+    void onWdId(String wdId);
+  //  void onError(String errorMsg);
 }

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

 package com.reyun.wandun;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 
 public class WdMain {
+    private static WdMain mInstance = new WdMain();
+
     // 用户申请sdk后获得的认证码，调用sdk接口时需传入
     private String mApiKey;
 
@@ -12,8 +15,15 @@ public class WdMain {
     //app context
     private Context mContext;
 
+    public static WdMain getInstance(){
+        return mInstance;
+    }
+
     //初始化方法，
-    public static void init(Context context, String apiKey) {
+    public void init(Context context, String apiKey) {
+        mContext = context;
+        mApiKey = apiKey;
+
         //load native lib
         System.loadLibrary("wdun");
 
@@ -22,7 +32,18 @@ public class WdMain {
     }
 
     //获取wdId
-    public static void getWdId(WdCallback cb) {
-        
+    public void getWdId(WdCallback cb) {
+        String wdId;
+        //文件中读取
+        SharedPreferences sp = mContext.getSharedPreferences("wd_dna", Context.MODE_PRIVATE);
+        wdId =  sp.getString(MdUtils.md5("device_id"), null);
+        if(wdId == null) {
+            //重新请求服务器获取
+            wdId = getWdIdNative();
+        }
+        cb.onWdId(wdId);
     }
+
+    //native层获取wdId
+    public native String getWdIdNative();
 }