java.lang.IllegalArgumentException: parameter must be a descendant of this view Error
android, viewgroup
Solution
Have the same problem. I use a ViewFlow as the parent view and several GridView as child views.This error happens when I press the Home key and restart the activity again after I scrolled these child views left and right.
Here is my solution:
mViewFlow.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
Of course, you can config it in layout.xml.
Hope that can help you.
Problem
I have a strange Error with a ViewGroup. For my main View I use classes in this links ViewFlow project ``` java.lang.IllegalArgumentException: parameter must be a descendant of this view at android.view.ViewGroup.offsetRectBetweenParentAndChild(ViewGroup.java:4153) at android.view.ViewGroup.offsetDescendantRectToMyCoords(ViewGroup.java:4090) at android.view.ViewRootImpl.scrollToRectOrFocus(ViewRootImpl.java:2129) at android.view.ViewRootImpl.draw(ViewRootImpl.java:1849) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1641) at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2449) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4424) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) at dalvik.system.NativeStart.main(Native Method) ``` This error happens when I try to go back to this view with an Intent or a finish(); method in an other View. When I use the Back Button it's not a problem. So i don't know why I have this Error. Thanks for your Help.