我使用自定义渲染器来更改搜索栏下划线颜色.但我不知道如何将取消按钮交叉符号(X)更改为图像,如附带的屏幕截图所示.我的自定义渲染器如下,
public class CustomSearchBarRenderer : SearchBarRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<SearchBar> e)
{
base.OnElementChanged(e);
if (e.OldElement == null)
{
LinearLayout linearLayout = this.Control.GetChildAt(0) as LinearLayout;
linearLayout = linearLayout.GetChildAt(2) as LinearLayout;
linearLayout = linearLayout.GetChildAt(1) as LinearLayout;
GradientDrawable gd = new GradientDrawable();
gd.SetStroke(0,Android.Graphics.Color.LightGray);
linearLayout.Background = gd;
AutoCompleteTextView textView = linearLayout.GetChildAt(0) as AutoCompleteTextView;
}
}
}
解决方法
How to change searchbar cancel button image in xamarin forms
public class MySearchBarRenderer : SearchBarRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.SearchBar> e)
{
base.OnElementChanged(e);
if (Control != null)
{
var searchView = Control;
int searchViewCloseButtonId = Control.Resources.GetIdentifier("android:id/search_close_btn",null,null);
var closeIcon = searchView.FindViewById(searchViewCloseButtonId);
(closeIcon as ImageView).SetImageResource(Resource.Drawable.cancel_icon);
}
}
}
