2020-09-24 1.修改MQTTSDK引用方式，修复闪退问题。

JLChen

2020-09-24 e91af284643d5e370b0d18c384fe8de65f59d9b3

 Android_HDL_SDK_XW/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip