Answers

• ColeX Member, Xamarin Team Xamurai

  September 2018 edited September 2018

  You would need custom renderer to do this stuff .

  Step 1 : Find the entry(EditText in android, UITextField in iOS) inside the searchbar .

  Step 2 : Assign the text change event, set cursor position .

  Android:

  [assembly: ExportRenderer(typeof(SearchBar), typeof(CustomSearchBarRenderer))]
  namespace PCL.Droid
  {
      class CustomSearchBarRenderer : SearchBarRenderer
      {
          public CustomSearchBarRenderer(Context context) : base(context)
          {
          }
  
          protected override void OnElementChanged(ElementChangedEventArgs<SearchBar> e)
          {
              base.OnElementChanged(e);
  
              if (Control != null)
              {
                  int id = Control.Resources.GetIdentifier("android:id/search_src_text", null, null);
                  EditText edittext = Control.FindViewById(id) as EditText;
                  edittext.TextChanged += Edittext_TextChanged;
              }
          }
  
          private void Edittext_TextChanged(object sender, Android.Text.TextChangedEventArgs e)
          {
              if (Control.HasFocus)
              {
                  (sender as EditText).SetSelection(0);
              }
          }
      }
  }
  

  iOS

  [assembly: ExportRenderer(typeof(SearchBar), typeof(CustomSearchBarRenderer))]
  namespace PCL.iOS
  {
      class CustomSearchBarRenderer : SearchBarRenderer
      {
          protected override void OnElementChanged(ElementChangedEventArgs<SearchBar> e)
          {
              base.OnElementChanged(e);
  
              if(Control != null)
              {
                  foreach(var view in Control.Subviews)
                  {
                      foreach(var view1 in view.Subviews)
                      {
                          if (view1 is UITextField)
                          {
                              UITextField textField = view1 as UITextField;
                              textField.AddTarget((sender, e1)=> {
                                  var position = textField.BeginningOfDocument;
                                  textField.SelectedTextRange = textField.GetTextRange(position, position);
                              }, UIControlEvent.EditingChanged);
                              break;
                          }
                      }                  
                  }
              }          
          }
      }
  }
  

  1
• raninatasha2020 Member ✭✭

  May 16

  Can you please suggest me the xamarin form changes also?

  0
• raninatasha2020 Member ✭✭

  May 16

  Is that possible only through custom renderer?

  0
• ColeX Member, Xamarin Team Xamurai

  May 17

  @raninatasha2020 said:
  Is that possible only through custom renderer?

  Yes.

  0
• raninatasha2020 Member ✭✭

  May 17

  I can understand that you have suggested above!, but i need complete solution, suggest me the form changes also

  0
• ColeX Member, Xamarin Team Xamurai

  May 17

  No changes in Forms project ,just put SearchBar normally in Page.Xaml

  <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
               xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
               x:Class="FormsApplication.Page2">
  
      <SearchBar/>
  
  </ContentPage>
  

  0
• raninatasha2020 Member ✭✭

  May 17

  Thanks for that!,

  I am not clear here,
  int id = Control.Resources.GetIdentifier("android:id/search_src_text", null, null);

  How to get the id then!

  0
• raninatasha2020 Member ✭✭

  May 17 edited May 17

  Am using AutoComplete Custom Search bar control!

  0