Xamarin Android复选框Clickable无效

Question

我目前正在Visual中使用Mvvm.cross框架和Xamarin进行一个项目。这是我的问题。

我有两个自定义复选框：

checkbox_approve:

<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:state_checked="true"
          android:drawable="@drawable/approved" />

  <item android:state_checked="false"
          android:drawable="@drawable/circle_unchecked" />

</selector>

checkbox_reject:

<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:state_checked="true"
          android:drawable="@drawable/rejected" />

  <item android:state_checked="false"
          android:drawable="@drawable/circle_unchecked" />

</selector>

这里是ReportResponseView.axml 文件中的代码：

                  <dc.AlphaRelativeLayout 
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    local:MvxBind="Click ApprovedCommand"> *//this is binding to ViewModel for different purposes*
                        <CheckBox 
                        android:id="@+id/approvedCheckBox"
                        android:button="@drawable/checkbox_approve"
                        android:clickable="false"
                        local:MvxBind="Checked IsApproved" /> *//this is binding to ViewModel for different purposes*
                    </dc.AlphaRelativeLayout>
                    <dc.AlphaRelativeLayout 
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    local:MvxBind="Click RejectedCommand">
                        <CheckBox
                        android:id="@+id/rejectedCheckBox"
                        android:button="@drawable/checkbox_reject"
                        android:clickable="false"
                        local:MvxBind="Checked IsRejected" />
                    </dc.AlphaRelativeLayout>

我想要的是:如果用户单击1复选框，第二个复选框将是不可点击的。以下是ReportResponseView.cs: 中的代码

 protected override void InitView(View view)
        {
            approveCheckBox = (CheckBox)view.FindViewById(Resource.Id.approvedCheckBox);
            rejectCheckBox = (CheckBox)view.FindViewById(Resource.Id.rejectedCheckBox);

            approveCheckBox.CheckedChange += (s, e) =>
            {
                if (approveCheckBox.Checked)
                {
                    rejectCheckBox.Clickable = false;
                }
                else
                {
                    rejectCheckBox.Clickable = true;
                }
            };

            rejectCheckBox.CheckedChange += (s, e) =>
            {
                if (rejectCheckBox.Checked)
                {
                    approveCheckBox.Clickable = false;
                }
                else
                {
                    approveCheckBox.Clickable = true;
                }
            };
        }

approveCheckBox.Clickable在某种程度上不适用于这两个复选框。当我点击1复选框时，第二个复选框仍然可以点击。我想知道我是不是做错了什么？

Answer 1

问题是我在2 AlphaRelativeLayout上有click event，它覆盖了2个复选框，总是允许用户单击AlphaRelativeLayout，然后使2个复选框明显可点击。

这里是解决方案：我在ViewModel中稍微调整了2种方法ApprovedCommand和RejectedCommand，然后只需要将Click事件从AlphaRelativeLayout移到Checkbox属性

               <dc.AlphaRelativeLayout 
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">
                    <CheckBox 
                    android:id="@+id/approvedCheckBox"
                    android:button="@drawable/checkbox_approve"
                    android:clickable="false"
                    local:MvxBind="Click ApprovedCommand" />
                </dc.AlphaRelativeLayout>
                <dc.AlphaRelativeLayout 
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">
                    <CheckBox
                    android:id="@+id/rejectedCheckBox"
                    android:button="@drawable/checkbox_reject"
                    android:clickable="false"
                    local:MvxBind="Click RejectedCommand" />
                </dc.AlphaRelativeLayout>

Answer 2

可以使用已启用的false属性来防止单击。

       protected override void InitView(View view)
        {
           approveCheckBox = 
          (CheckBox)view.FindViewById(Resource.Id.approvedCheckBox);
            rejectCheckBox = 
            (CheckBox)view.FindViewById(Resource.Id.rejectedCheckBox);

            approveCheckBox.CheckedChange += (s, e) =>
            {
                if (approveCheckBox.Checked)
                {
                    rejectCheckBox.Enabled = false;
                }
                else
                {
                    rejectCheckBox.Enabled = true;
                }
            };

            rejectCheckBox.CheckedChange += (s, e) =>
            {
                if (rejectCheckBox.Checked)
                {
                    approveCheckBox.Enabled = false;
                }
                else
                {
                    approveCheckBox.Enabled = true;
                }
            };
        }