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namespace Xamarin.Forms.Controls
{
public class MainPageLifeCycleTests : ContentPage
{
int _numTimesStarted;
int _numTimesSlept;
int _numTimesResumed;
readonly StackLayout _numTimesStartedLayout;
readonly StackLayout _numTimesSleptLayout;
readonly StackLayout _numTimesResumedLayout;
public MainPageLifeCycleTests ()
{
object timesStarted;
if (!Application.Current.Properties.TryGetValue ("TimesStarted", out timesStarted)) {
Application.Current.Properties["TimesStarted"] = 0;
}
var numTimesStarted = (int)Application.Current.Properties["TimesStarted"];
object timesSlept;
if (!Application.Current.Properties.TryGetValue ("TimesSlept", out timesSlept)) {
Application.Current.Properties["TimesSlept"] = 0;
}
var numTimesSlept = (int)Application.Current.Properties["TimesSlept"];
object timesResumed;
if (!Application.Current.Properties.TryGetValue ("TimesResumed", out timesResumed)) {
Application.Current.Properties["TimesResumed"] = 0;
}
var numTimesResumed = (int)Application.Current.Properties["TimesResumed"];
_numTimesStartedLayout = BuildLabelLayout ("TimesStarted", numTimesStarted);
_numTimesSleptLayout = BuildLabelLayout ("TimesSlept", numTimesSlept);
_numTimesResumedLayout = BuildLabelLayout ("TimesResumed", numTimesResumed);
var layout = new StackLayout {
Children = {
_numTimesStartedLayout,
_numTimesSleptLayout,
_numTimesResumedLayout
}
};
Content = layout;
}
StackLayout BuildLabelLayout (string title, int property)
{
var labelTitle = new Label {
Text = title
};
var valueLabel = new Label {
Text = property.ToString ()
};
return new StackLayout {
Children = {
labelTitle,
valueLabel
}
};
}
public void UpdateLabels ()
{
((Label)_numTimesStartedLayout.Children[1]).Text = ((int)Application.Current.Properties["TimesStarted"]).ToString ();
((Label)_numTimesSleptLayout.Children[1]).Text = ((int)Application.Current.Properties["TimesSlept"]).ToString ();
((Label)_numTimesResumedLayout.Children[1]).Text = ((int)Application.Current.Properties["TimesResumed"]).ToString ();
}
}
}
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