R.id.popup_details); popupWindow.showAtLocation'android.view.View android.view.View.getRootView()' on a null object referencepopupWindow.showAtLocation谢谢你的阅读我想我发现了这个问题
WindowManagerImpl.java:85)在android.widget.PopupWindow.invokePopup(PopupWindow.java:1279) at android.widget.PopupWindow.showAtLocation(PopupWindow.java:1040)在android.widget.PopupWindow.showAtLocation(PopupWindow.java:1003) at com.guides4art.app.ImageSlider.RatePopUp@Override