方便开发人员监测应用运行内存使用状况，开启后会在模拟器右侧显示实时数据
一、新建工具类
public static class MemoryDiagnosticsHelper
{
static Popup popup;
static TextBlock currentMemoryBlock;
static DispatcherTimer timer;
static bool forceGc;
public static void Start(bool forceGc)
{
MemoryDiagnosticsHelper.forceGc = forceGc;
CreatePopup();
CreateTimer();
ShowPopup();
StartTimer();
}
private static void ShowPopup()
{
popup.IsOpen = true;
}
private static void StartTimer()
{
timer.Start();
}
private static void CreateTimer()
{
if (timer != null)
return;
timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromMilliseconds(300);
timer.Tick += new EventHandler(timer_Tick);
}
static void timer_Tick(object sender, EventArgs e)
{
if (forceGc)
GC.Collect();
long mem = (long)DeviceExtendedProperties.GetValue("ApplicationCurrentMemoryUsage");
currentMemoryBlock.Text = string.Format("{0:N}", mem / 1024);
}
private static void CreatePopup()
{
if (popup != null)
return;
popup = new Popup();
double fontSize = (double)App.Current.Resources["PhoneFontSizeSmall"] - 2;
Brush foreground = (Brush)App.Current.Resources["PhoneForegroundBrush"];
StackPanel sp = new StackPanel { Orientation = Orientation.Horizontal, Background = (Brush)App.Current.Resources["PhoneSemitransparentBrush"] };
currentMemoryBlock = new TextBlock { Text = "---", FontSize = fontSize, Foreground = foreground };
sp.Children.Add(new TextBlock { Text = "Mem(k): ", FontSize = fontSize, Foreground = foreground });
sp.Children.Add(currentMemoryBlock);
sp.RenderTransform = new CompositeTransform { Rotation = 90, TranslateX = 480, TranslateY = 420, CenterX = 0, CenterY = 0 };
popup.Child = sp;
}
public static void Stop()
{
HidePopup();
StopTimer();
}
private static void StopTimer()
{
timer.Stop();
}
private static void HidePopup()
{
popup.IsOpen = false;
}
}
二、在应用初始化时开启监测
App.cs中
public App()
{
#if DEBUG
// Display the current frame rate counters.
Application.Current.Host.Settings.EnableFrameRateCounter = true;
MemoryDiagnosticsHelper.Start(true);
#endif
}