1
我的windows phone 7应用程序中有一些页面,其中有很多文本框。正如我们所知,Windows Phone 7的默认行为是,当我们将注意力集中在任何文本框上时,SIP键盘会弹出并滑动整个页面,失去焦点时会恢复到正常状态。 我想在我的应用程序中限制这件事。由于我已经搜索并找到了解决方案,我们将所有控件放在scrollviewer
中,并在textbox
的焦点上将滚动查看器的真实偏移量设置为该文本框的位置。在SIP键盘上出现设置垂直偏移量
现在我很困惑我该如何告诉scrollviewer关于我的垂直偏移控件的位置。
并假设如果我可以设置那个东西,我需要调用两个方法来处理我的文本框
on GotFocus
和On LostFocus
。有没有其他方法可以通过交互行为和触发器来调用这个东西?
UPDATE ...
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!--TitlePanel contains the name of the application and page title-->
<StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
<TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBlock x:Name="PageTitle" Text="page name" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
</StackPanel>
<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<Grid.RowDefinitions>
<RowDefinition Height="480" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<ScrollViewer x:Name="sc">
<StackPanel>
<Grid x:Name="Grid1" Grid.Row="0">
<Grid.RowDefinitions>
<RowDefinition Height="80" />
<RowDefinition Height="80" />
<RowDefinition Height="80" />
<RowDefinition Height="80" />
<RowDefinition Height="80" />
<RowDefinition Height="80" />
</Grid.RowDefinitions>
<TextBox Width="460" AcceptsReturn="True" Grid.Row="0" x:Name="txtbox1"/>
<TextBox Width="460" AcceptsReturn="True" Grid.Row="1" x:Name="txtbox2"/>
<TextBox Width="460" AcceptsReturn="True" Grid.Row="2" x:Name="txtbox3"/>
<TextBox Width="460" AcceptsReturn="True" Grid.Row="3" x:Name="txtbox4"/>
<TextBox Width="460" AcceptsReturn="True" Grid.Row="4" x:Name="txtbox5"/>
<TextBox Width="460" AcceptsReturn="True" Grid.Row="5" x:Name="txtbox6" GotFocus="txtbox6_GotFocus"/>
</Grid>
</StackPanel>
</ScrollViewer>
<Grid x:Name="Grid2" Grid.Row="1">
<Grid.RowDefinitions>
<RowDefinition Height="80" />
</Grid.RowDefinitions>
<Button x:Name="btnTest" Width="250" Content="Test" Grid.Row="0" />
</Grid>
</Grid>
</Grid>
和CS C#....
void ScrollToFocused(ScrollViewer scrollviewer)
{
FrameworkElement focusedElement = FocusManager.GetFocusedElement() as FrameworkElement;
// verify focused control is a child of the ScrollViewer
if (scrollviewer != null && focusedElement != null && IsVisualChild(scrollviewer, focusedElement))
{
GeneralTransform focusedVisualTransform = focusedElement.TransformToVisual(scrollviewer);
Rect rectangle = focusedVisualTransform.TransformBounds(new Rect(new Point(focusedElement.Margin.Left, focusedElement.Margin.Top), focusedElement.RenderSize));
double newOffset = scrollviewer.VerticalOffset + (rectangle.Bottom - scrollviewer.ViewportHeight);
scrollviewer.ScrollToVerticalOffset(newOffset);
}
}
bool IsVisualChild(DependencyObject element, DependencyObject searchChildElement)
{
if (element == searchChildElement)
return true;
// recursively process nested children in the visual tree
int children = VisualTreeHelper.GetChildrenCount(element);
for (int i = 0; i < children; i++)
{
DependencyObject child = VisualTreeHelper.GetChild(element, i);
if (IsVisualChild(child, searchChildElement))
return true;
}
return false;
}
private void txtbox6_GotFocus(object sender, RoutedEventArgs e)
{
txtbox6.Focus();
ScrollToFocused(sc);
}
但相同的结果... 你的帮助是高度赞赏。
'(App.Current as App).RootFrame.RenderTransform = new CompositeTransform();'in GotFocus'方法在您选择“文本框”时禁用默认滚动。也许这可以帮助你 – Ku6opr 2012-07-15 06:35:52
@ Ku6opr:这不会帮助我,因为它会停止整个页面渲染转换。我只想我不能设置我的scrollviewer的滚动 – 2012-07-15 07:47:44