scrollview

问题 I have this scroll view with many elements inside for which the height is variable. I want to know if there is a way to know the maxY of the last element in the scrollview, without adding up the height of all the elements in the scrollview. I tried lastViewInScrollView.frame.maxY and it was not right. 回答1: It is totally mathematics, as you said you dont want to add all the element before the last element, thats OK, now work with the end of the scrollview. As per the apple documentation (https

问题 I'm a beginner in kivy and python. I've been trying to create a scrollview in a page that displays selected video on the screen. But after a while when i selected 5-6 videos to display even though i delete the video widget it starts to lag. And i'm open to any suggestions to better way to handle this kind of application. from kivy.config import Config Config.set('graphics', 'width', '1920') Config.set('graphics', 'height', '1080') from kivy.app import App from kivy.lang import Builder from

问题 Can anybody tell me how to use scrollbar in this code? And secondly, is there any way to align the labels and TextInput so that text inside the TextInput will be visible clearly no matter how much Input will be there. Here alignment means: if there is 100s(hundreds or thousands) of TextInputs , the text inside TextInput should be properly visible. Actually when I was giving some (spacing = 50) in the code, after some 20s input, the text was not visible properly. Thanks in advance. from kivy

问题 I have a fragment with two RelativeLayout, one inside the other. This fragment is inside a tab. I want that the internal layout(layoutInternal) is scrollable, but with the following code does not work. I create the view object into the layoutInternal dinamically. Where is my mistake? <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/layoutExsternal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" >

问题 When I put a HorizontalScrollView around a GridView, the GridView gets compressed into a small column on the left. The Gridview's vertical scrollbar even appears on the left. The HorizontalScrollView's width is set to fill_parent and the GridView is also fill_parent. I don't know why this is happening. I tried setting the GridView's visibility to GONE and VISIBILE like someone recommended but it doesn't do anything. However if fastScroll is enabled on the GridView, then dragging the fast

问题 i am new in app development. i am using 3 tabs. in each fragment i want to display a list of cardview(7-8 cards). my first fragment.xml <ScrollView android:layout_height="fill_parent" android:layout_width="match_parent" android:fillViewport="true" xmlns:android="http://schemas.android.com/apk/res/android" > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height

问题 I have a vertically-scrolling scroll view that has a single subview. This subview has a couple of collection views. I want them to scroll horizontally. It doesn't work because they are inside the scroll view. The problem is that the pan/scrolling gesture is working just for the scroll view and it doesn't propagate to the collection views. I just see the scroll view scrolling. There is the same problem with tapping on a collection cell. This event just doesn't happen. I already tried adding

问题 I have this UL list: <ul class="third-level-nav"> <li><a href="/accommodations/Home.aspx">Home</a></li> <li><a href="/accommodations/Household-Ordering-Tutorial.aspx"> Household Ordering Tutorial </a> </li> <li><a href="/accommodations/List-of-standard-items.aspx"> List of standard items </a> </li> <li> <a href="/accommodations/Costs-of-utilities.aspx"> Costs of utilities </a> </li> </ul> It displays like this on the page, as a flat list (LI floated left, list-style:none): Home | Household

问题 I have the following XML layout in my android application, using ScrollView: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="fill_parent"> <TextView.../> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/linearLayout1"> <CheckBox ...> <requestFocus></requestFocus> </CheckBox> <CheckBox ..>

问题 I have listview with edittext and -/+ button.When i am click on button change edittext value like increment/decrement . when i am set value like 5 and scroll the listview the edittext set value as a default value like 0. I am useing this way public View getView(final int position, View convertView,ViewGroup parent) { LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); View connection; final ViewHolder holder; connection = new View(context);