update:2020.05.23

fix:10.0网络问题，设备号获取问题
add:

app/src/main/java/com/info/sn/utils/Utils.java

@@ -48,6 +48,7 @@ import java.io.FileReader;
 import java.io.InputStreamReader;
 import java.io.LineNumberReader;
 import java.io.Reader;
+import java.lang.reflect.Method;
 import java.net.NetworkInterface;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
@@ -408,14 +409,14 @@ public class Utils {
     public static void unInstallAPP(Context context, String packageName) {
         if (!TextUtils.isEmpty(packageName) && !AppsManagerUtils.isSystemApp(context, packageName)) {
             if (AppsManagerUtils.isSystemApp(context, packageName)) {
-                Toast.makeText(MyApplication.getAppContext(), "系统应用无法卸载!", Toast.LENGTH_SHORT).show();
+                ToastUtil.show("系统应用无法卸载!");
             } else {
                 Uri packageURI = Uri.parse("package:" + packageName);
                 Intent intent = new Intent(Intent.ACTION_DELETE, packageURI);
                 context.startActivity(intent);
             }
         } else {
-            Toast.makeText(MyApplication.getAppContext(), "系统应用无法卸载!", Toast.LENGTH_SHORT).show();
+            ToastUtil.show("系统应用无法卸载!");
         }
     }
 
@@ -688,11 +689,24 @@ public class Utils {
      *
      * @return
      */
+    @SuppressLint({"MissingPermission", "NewApi"})
     public static String getSerial() {
-        return Build.SERIAL;
-//        return "QNS3AI000111";
-//        return "QNW8WJ900002";
-
+        String serial = "unknow";
+        try {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {//9.0+
+                serial = Build.getSerial();
+            } else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N) {//8.0+
+                serial = Build.SERIAL;
+            } else {//8.0-
+                Class<?> c = Class.forName("android.os.SystemProperties");
+                Method get = c.getMethod("get", String.class);
+                serial = (String) get.invoke(c, "ro.serialno");
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+            Log.e("e", "读取设备序列号异常：" + e.toString());
+        }
+        return serial;
     }
 
     public static final long A_GB = 1073741824;
@@ -860,5 +874,4 @@ public class Utils {
     }
 
 
-
 }