当我单击 SearchView 时，没有触发单击事件 (Xamarin.Android)

Question

我有以下SearchView

<SearchView
    android:minWidth="25px"
    android:minHeight="25px"
    android:background="@drawable/rounded_border"
    android:clickable="true"
    android:iconifiedByDefault="false"
    android:focusable="false"
    android:layout_weight="1"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:id="@+id/searchViewCustomers" />

当我点击它时，我希望 activity 的一个小部件变成 visible，另一个变成 gone，就像这样：

searchView.Click += delegate
{
    customersRecyclerView.Visibility = ViewStates.Visible;
    customerDataContainer.Visibility = ViewStates.Gone;
};

但是当我运行应用程序并点击 searchView 时，小部件不会变成 visible/gone 并且当我在 serachView.Click 上放置断点时，程序执行永远不会停在那里。当我点击 searchView 小部件时，如何制作小部件 visible/gone？

Answer 1

我的做法是，向搜索视图添加焦点更改事件：

 searchView.FocusChange += SearchView_FocusChange;
 private void SearchView_FocusChange(object sender, View.FocusChangeEventArgs e)
    {
              if(searchView.HasFocus)
              {
               //Visibility code
              }
    }

更新： 首先，出于兼容性目的，我会使用 Appcompat Searchview，像这样：

<android.support.v7.widget.SearchView
android:minWidth="25px"
android:minHeight="25px"
android:background="@drawable/rounded_border"
android:clickable="true"
android:iconifiedByDefault="false"
android:focusable="false"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:id="@+id/searchViewCustomers" />

然后我会尝试使用焦点更改侦听器（同上）。

如果这不起作用，我会在查询焦点更改侦听器上使用如下内容：

searchView.SetOnQueryTextFocusChangeListener(new FocusChangeListenerClass());

并添加监听器 class 类似这样的内容：

public class FocusChangeListenerClass : Java.Lang.Object, IOnFocusChangeListener
{
    public void OnFocusChange(Android.Views.View v, bool hasFocus)
    {

    }
}

更新：

Activity:

public class ClientsActivity : Activity
{
    .......
    .......
    Android.Widget.SearchView searchView;
    RecyclerView customersRecyclerView;
    ScrollView customerDataContainer;
    .......
    protected override void OnCreate(Bundle savedInstanceState)
    {
         ........
         ........
         searchView.SetOnQueryTextFocusChangeListener(new FocusChangeListenerClass(ref customersRecyclerView, ref customerDataContainer));
    }
}

FocusChangeListenerClass.cs:

public class FocusChangeListenerClass : Java.Lang.Object, IOnFocusChangeListener
{
    RecyclerView customersRecyclerView;
    ScrollView customerDataContainer;
    public FocusChangeListenerClass(ref RecyclerView recyclerView, ref ScrollView dataContainer)
    {
        customersRecyclerView = recyclerView;
        customerDataContainer = dataContainer;
    }

    public void OnFocusChange(Android.Views.View v, bool hasFocus)
    {
        if(hasFocus == true)
        {
            customersRecyclerView.Visibility = ViewStates.Visible;
            customerDataContainer.Visibility = ViewStates.Gone;
        }
        else
        {
            customersRecyclerView.Visibility = ViewStates.Gone;
            customerDataContainer.Visibility = ViewStates.Visible;
        }
    }

}

不需要在.axml文件中将<SearchView>更改为<android.support.v7.widget.SearchView>。

当我单击 SearchView 时，没有触发单击事件 (Xamarin.Android)

When I click SearchView, click event doesn't fire (Xamarin.Android)

click

xamarin.android

searchview