// java.lang.IllegalStateException: ScrollView can host only one direct child
// at android.widget.ScrollView.addView(ScrollView.java:251)
// at android.support.design.widget.BaseTransientBottomBar.showView(BaseTransientBottomBar.java:436)
// at android.support.design.widget.BaseTransientBottomBar$1.handleMessage(BaseTransientBottomBar.java:177)
// at android.os.Handler.dispatchMessage(Handler.java:98)
// at android.os.Looper.loop(Looper.java:148)
// at android.app.ActivityThread.main(ActivityThread.java:5417)
// at java.lang.reflect.Method.invoke(Native Method)
// at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
// at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)