Fix bug when remove HighLightView

[yansha87]

No description provided.

[fengmol]

背景太黑了，可以调吗

[fengmol]

找到了maskcolor

[chengliangpan]

给右下角的FloatingActionButton添加提示时总找不到合适的位置啊，只有OnLeftPosCallback堪用，其他的位置都显示不出来。尝试使用OnBasePosCallback ,总是跳出异常：
java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.view.View.getLayoutParams()' on a null object reference
at zhy.com.highlight.view.HightLightView.buildTipLayoutParams(HightLightView.java:251)
at zhy.com.highlight.view.HightLightView.updateTipPos(HightLightView.java:231)
at zhy.com.highlight.view.HightLightView.onLayout(HightLightView.java:220)
at android.view.View.layout(View.java:17684)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17684)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17684)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1762)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1606)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1515)
at android.view.View.layout(View.java:17684)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17684)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1762)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1606)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1515)
at android.view.View.layout(View.java:17684)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:774)
at android.view.View.layout(View.java:17684)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2511)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2226)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1364)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6757)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:923)
at android.view.Choreographer.doCallbacks(Choreographer.java:735)
at android.view.Choreographer.doFrame(Choreographer.java:667)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:909)
at android.os.Handler.handleCallback(Handler.java:755)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6524)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:941)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:831)