private void UpdateBackButtonTitleText()
{
string backTitle = "";
backTitle = ChangeBackButtonTextHelper.GetBackButtonText();
if (this.NavigationBar.Items.Count() > 1)
{
this.TopViewController.NavigationItem.LeftBarButtonItems[1].Title = backTitle;
}
}
void SetBackButtonOnPage(Page page)
{
//var stack = page.Navigation.NavigationStack;
//if(stack.Count == 1)
//{
// //SetDefaultBackButton();
//}
if (page is IDynamicChangeBackText)
{
string backButtonText = ChangeBackButtonTextHelper.GetBackButtonText();
SetImageTitleBackButton("Left2", backButtonText, -15);
}
else
{
//SetDefaultBackButton();
}
}
public CanChangePageViewModel(INavigationService navigationService)
{
this.navigationService = navigationService;
SetBackButtonTextCommand = new DelegateCommand(() =>
{
ChangeBackButtonTextHelper.ChangeBackButtonText(Message);
});
SetChineseCommand = new DelegateCommand(() =>
{
Title = "動態換文字";
ThisBackText = "上頁";
//ChangeBackButtonTextHelper.ChangeBackButtonText("上頁");
});
SetEnglishCommand = new DelegateCommand(() =>
{
Title = "Dynamic Text";
ThisBackText = "Back";
//ChangeBackButtonTextHelper.ChangeBackButtonText("Back");
});
}
private static void OnSetBackButtonTextChanged(BindableObject bindable, object oldValue, object newValue)
{
ContentPage page = bindable as ContentPage;
if (page == null)
{
return;
}
string oldString = oldValue as string;
string newString = newValue as string;
if (newString == null)
{
return;
}
if (page is IDynamicChangeBackText)
{
ChangeBackButtonTextHelper.ChangeBackButtonText(newString);
}
}
