java.lang.NullPointerException

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    • java.lang.NullPointerException: Attempt to invoke virtual method 'void com.wenming.weiswift.ui.login.fragment.home.HomeFragment.setOnBarListener(com.wenming.weiswift.ui.login.fragment.home.HomeFragment$onButtonBarListener)' on a null object reference at com.wenming.weiswift.ui.login.activity.MainActivity.showHomeFragment(MainActivity.java:237) at com.wenming.weiswift.ui.login.activity.MainActivity.switchToFragment(MainActivity.java:216) at com.wenming.weiswift.ui.login.activity.MainActivity.setTabFragment(MainActivity.java:313) at com.wenming.weiswift.ui.login.activity.MainActivity.onCreate(MainActivity.java:127) at android.app.Activity.performCreate(Activity.java:6876) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) at android.app.ActivityThread.access$1100(ActivityThread.java:221) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:158) at android.app.ActivityThread.main(ActivityThread.java:7224) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:134)
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