[英]Can't get dynamically generated tile working (Windows Phone)
我有在Application_Deacitvated / Closing()中執行的方法。
public bool createBackTile()
{
if(AlarmClock.IsExists())
{
ImageBrush background = new ImageBrush()
{
ImageSource = new BitmapImage(new Uri("/BackBackgroundTheme.png", UriKind.Relative)),
AlignmentX = AlignmentX.Center,
AlignmentY = AlignmentY.Center
};
// Preparing tile image.
TextBox tileImageData = new TextBox()
{
Text = AlarmClock.Read().ToShortTimeString(),
FontSize = 45,
FontWeight = FontWeights.Bold,
Foreground = new SolidColorBrush(Colors.White),
//Background = background,
Height = 173,
Width = 173,
HorizontalContentAlignment = HorizontalAlignment.Center,
VerticalContentAlignment = VerticalAlignment.Center,
Padding = new Thickness(-12),
Margin = new Thickness(0),
Clip = new RectangleGeometry { Rect = new Rect(0, 0, 173, 173) }
};
Canvas canvas = new Canvas()
{
Width = 173,
Height = 173,
Background = background,
Margin = new Thickness(0)
};
canvas.Children.Add(tileImageData);
// Saving tile image.
WriteableBitmap tileImage = new WriteableBitmap(173, 173);
tileImage.Render(canvas, null);
tileImage.Render(tileImageData, null);
tileImage.Invalidate();
using(var stream = IsolatedStorageFile.GetUserStoreForApplication().CreateFile("/Shared/ShellContent/BackBackground.jpg"))
{
tileImage.SaveJpeg(stream, 173, 173, 0, 100);
}
// Sets data for tile.
StandardTileData tileData = new StandardTileData()
{
BackgroundImage = new Uri("BackgroundAlarmSet.png", UriKind.Relative),
BackBackgroundImage = new Uri(@"isostore:/Shared/ShellContent/BackBackground.jpg"),
BackContent = "",
BackTitle = "",
};
// Sets tile.
ShellTile.ActiveTiles.FirstOrDefault().Update(tileData);
return true;
}
return false;
}
因此,如您所見,我想生成一個帶有文本的圖塊,其文本位於圖像背景“ BackBackgroundTheme.png”的中心。 我正在嘗試將該圖塊保存在IsolatedStorage中,並將其分配給BackBackgroundImage。
但這是行不通的。 磁貼正在翻轉,但BackBackground完全是黑色的。 我已經加載了這種可操縱的背景,似乎確實只是黑匣子。 那么,如何使其工作呢?
試試: BackgroundImage = new Uri(@"isostore:/Shared/ShellContent/BackBackground.jpg", UriKind.Absolute)
我終於找到問題所在。
似乎在Application_Closing / Deactivating()中未正確完成切片圖像的生成。 因此,我將圖像生成移到其他地方,現在,當應用程序關閉/停用時,我只是將先前生成的圖像設置為圖塊。
嘗試這個:
canvas.Children.Add(tileImageData);
canvas.UpdateLayout();
// Saving tile image.
WriteableBitmap tileImage = new WriteableBitmap(173, 173);
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