isGranted method has crash

[joedan0104]

RxPermissionsFragment.isGranted has crash.

1Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.app.Activity.checkSelfPermission(java.lang.String)' on a null object reference 2 at com.tbruyelle.rxpermissions2.RxPermissionsFragment.isGranted(TbsSdkJava:71) 3 at com.tbruyelle.rxpermissions2.RxPermissions.isGranted(TbsSdkJava:251) 4 at com.jindan.base.permission.PermissionManager.hasPermission(TbsSdkJava:342) 5 at com.shouse.wealth.ui.BaseMainActivity.checkSoftUpdate(TbsSdkJava:413) 6 at com.shouse.wealth.ui.MainTabActivity.initViewData(TbsSdkJava:896) 7 at com.shouse.wealth.ui.MainTabActivity.handleCustomMessage(TbsSdkJava:243) 8 at com.shouse.wealth.ui.BaseMainActivity$2.handleMessage(TbsSdkJava:294) 9 at android.os.Handler.dispatchMessage(Handler.java:102) 10 at android.os.Looper.loop(Looper.java:163) 11 at android.app.ActivityThread.main(ActivityThread.java:6379) 12 at java.lang.reflect.Method.invoke(Native Method) 13 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904) 14 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)