fixed memory leaks

 fixed memory leaks

README.md

@@ -3,18 +3,16 @@
 Note Get app signature information Uninstall app Use easy-to-use color picker. Better animation integration.
 
 <p align="left">
-  <img src="https://github.com/malxt/ObtainSignature/blob/master/WechatQrcode_mini.gif">
+  <img src="https://github.com/malxt/ObtainSignature/blob/master/WechatQrcode_mini.gif" width="55%">
 </p>
 
 [YouTube视频 演示地址](https://youtu.be/Y6_BGCnMb00)
 
-[最新版本演示APK文件下载](https://github.com/malxt/ObtainSignature/releases/download/v3.0.R0.90/obtain_signature_v3.0.R0.90_release.apk)
+[最新版本演示APK文件下载](https://github.com/MALTF/ObtainSignature/releases/download/v3.1.R6.102/obtain_signature_v3.1_R6.102.08211751_release_jgs.apk)
 
 
+[历史版本](https://github.com/malxt/ObtainSignature/releases)
 
-[历史版本 v1.9.0320](https://github.com/malxue/ObtainSignature/releases/tag/1.9.0320_release)
-
-
-[历史版本 v2.3.80](https://github.com/malxt/ObtainSignature/releases/tag/v2.3.80)
-
+<!--
 [扫码下载地址](https://www.pgyer.com/malt)[下载密码：com.malx.signature]
+-->