你需要創建一個自定義NavigationRenderer
並插入自己的UISearchBar
到UIToolbar
或SearchView
到ViewGroup
:
Xamarin形式:Renderer Base Classes and Native Controls
由於插入的iOS UISearchBar
到導航欄通過的例子自定義NavigationRenderer
:
注意:爲了保持事物解耦,使用MessagingCenter
可讓您在自定義渲染器內沒有任何硬編碼事件依賴關係的情況下抽取消息。
[assembly:ExportRenderer (typeof(NavigationPage), typeof(SeachBarNavigationRender))]
namespace Forms.Life.Cycle.iOS
{
public class SeachBarNavigationRender : NavigationRenderer
{
public SeachBarNavigationRender() : base()
{
}
public override void PushViewController (UIViewController viewController, bool animated)
{
base.PushViewController (viewController, animated);
List<UIBarButtonItem> toolbarItem = new List<UIBarButtonItem>();
foreach (UIBarButtonItem barButtonItem in TopViewController.NavigationItem.RightBarButtonItems) {
if (barButtonItem.Title.Contains("search")) {
UISearchBar search = new UISearchBar (new CGRect (0, 0, 200, 25));
search.BackgroundColor = UIColor.LightGray;
search.SearchBarStyle = UISearchBarStyle.Prominent;
search.TextChanged += (object sender, UISearchBarTextChangedEventArgs e) => {
D.WriteLine(e.SearchText);
MessagingCenter.Send<object, string> (this, "SearchText", e.SearchText);
};
barButtonItem.CustomView = search;
}
toolbarItem.Add (barButtonItem);
}
TopViewController.NavigationItem.RightBarButtonItems = toolbarItem.ToArray();
}
}
}
得到了一些代碼讓這個工作在Android自定義渲染器? :) – jdstaerk
@DDerType我需要相同的想法android.do你有... – SANDEEP