protected override void Init()
{
s_lbl = new Label {
AutomationId = "lblDisposedCound"
};
var tab1 = new DisposePage {
Title = "Tab1"
};
var tab2 = new DisposePage {
Title = "Tab2"
};
tab1.RendererDisposed += HandleDispose;
tab2.RendererDisposed += HandleDispose;
tab2.PopAction = tab1.PopAction = async() => await Navigation.PopAsync();
var tabbedPage = new TabbedPage {
Children = { tab1, tab2 }
};
var btm = new Button {
Text = "Push"
};
btm.Clicked += async(object sender, EventArgs e) => {
await Navigation.PushAsync(tabbedPage);
};
Content = new StackLayout {
Children = { btm, s_lbl }
};
}
public DisposeGallery()
{
var disposePage = new DisposePage();
var pushButton = new Button {
Text = "Push disposable page"
};
var pushModalButton = new Button {
Text = "PushModal disposable page"
};
pushButton.Clicked += (sender, args) => {
disposePage.PopAction = () => Navigation.PopAsync();
Navigation.PushAsync(disposePage);
};
pushModalButton.Clicked += (sender, args) => {
disposePage.PopAction = () => Navigation.PopModalAsync();
Navigation.PushModalAsync(disposePage);
};
var appearingLabel = new Label {
Text = "Appearing not sent"
};
var disappearingLabel = new Label {
Text = "Disappearing not sent"
};
var disposedPageLabel = new Label {
Text = "Page renderer not yet disposed"
};
var disposedLabelsLabel = new Label {
Text = "Number of disposed labels: 0"
};
disposePage.Appearing += (sender, args) => appearingLabel.Text = "Appearing sent";
disposePage.Disappearing += (sender, args) => disappearingLabel.Text = "Disappearing sent";
disposePage.RendererDisposed += (sender, args) => {
disposedPageLabel.Text = "Page renderer disposed";
// give some time for this to propogate
Device.StartTimer(TimeSpan.FromSeconds(1), () => {
disposedLabelsLabel.Text = "Number of disposed labels: " + disposePage.DisposedLabelCount;
return(false);
});
};
Content = new StackLayout {
Padding = new Thickness(20),
Children =
{
pushButton,
pushModalButton,
appearingLabel,
disappearingLabel,
disposedLabelsLabel,
disposedPageLabel
}
};
}
