如何在Android上编辑SearchBar Xamarin Forms的图标？ [英] How to edit icon of SearchBar Xamarin Forms on Android?

问题描述

我需要你的帮助！

我在跨平台的移动开发项目上工作。我使用Visual Studio与Xamarin Forms。
我想创建一个带有SearchBar（Xamarin.Forms类）的页面，但是，我的问题是SearchBar图标的个性化，特别是在Android平台上。我的搜索让我一无所获。
如果您知道编辑图标的方法，我将非常感激。 （我有一个模型要遵循，所以我想要更改的图标，而不是颜色）。

提前谢谢！

  protected override void OnElementChanged（ElementChangedEventArgs< SearchBar> e）
 {
 base.OnElementChanged（e）; 
 if（Control！= null）{
 var searchView = Control; 
 searchView.Iconified = true; 
 searchView.SetIconifiedByDefault（false）; 
 //（Resource.Id.search_mag_icon）;是错的/ Xammie bug 
 int searchIconId = Context.Resources.GetIdentifier（android：id / search_mag_icon，null，null）; 
 var icon = searchView.FindViewById（searchIconId）; 
（图标为ImageView）.SetImageResource（Resource.Drawable.icon）; 
} 
  

---

  protected override void OnElementChanged（ElementChangedEventArgs< SearchBar> e）
 {
 base.OnElementChanged（e）; 
 if（Control！= null）{
 var searchView = Control; 
 searchView.Iconified = true; 
 searchView.SetIconifiedByDefault（false）; 
 //（Resource.Id.search_mag_icon）;是错的/ Xammie bug 
 int searchIconId = Context.Resources.GetIdentifier（android：id / search_mag_icon，null，null）; 
 var icon = searchView.FindViewById（searchIconId）; 
 icon.Visibility = Android.Views.ViewStates.Gone; 
 
} 
} 
  

I need your help !

I work on a mobile development project, cross-platform. I use Visual Studio with Xamarin Forms. I want to make a page with a SearchBar (Xamarin.Forms class), but, my problem is the personalisation of the SearchBar icon, especially on the Platform Android. My search led me to nothing. I would be very grateful if you know of a way to edit icon. (I have a model to follow, so It’s well the icon that I want to change and not the color).

Thank you in advance !

Introduction to Custom Renderers

You can subclass the stock Xamarin.Forms controls fairly easily for making minor platform-oriented changes to the controls.

In the examples above, I create two SearchBar subclasses, one to allow a custom icon and the other to remove the icon, the Xamarin.Android renders look like:

protected override void OnElementChanged (ElementChangedEventArgs<SearchBar> e)
{
    base.OnElementChanged (e);
    if (Control != null) {
        var searchView = Control;
        searchView.Iconified = true;
        searchView.SetIconifiedByDefault (false);
        // (Resource.Id.search_mag_icon); is wrong / Xammie bug
        int searchIconId = Context.Resources.GetIdentifier ("android:id/search_mag_icon", null, null);
        var icon = searchView.FindViewById (searchIconId);
        (icon as ImageView).SetImageResource (Resource.Drawable.icon);
    }

---

protected override void OnElementChanged (ElementChangedEventArgs<SearchBar> e)
{
    base.OnElementChanged (e);
    if (Control != null) {
        var searchView = Control;
        searchView.Iconified = true;
        searchView.SetIconifiedByDefault (false);
        // (Resource.Id.search_mag_icon); is wrong / Xammie bug
        int searchIconId = Context.Resources.GetIdentifier ("android:id/search_mag_icon", null, null);
        var icon = searchView.FindViewById (searchIconId);
        icon.Visibility = Android.Views.ViewStates.Gone;

    }
}

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