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我正在为Android/iOS应用程序使用MvvmCross 3.2.2,并且遇到不刷新的MvxListView和使用DrawableName绑定的ImageView,除非有关项目在屏幕上滚动并返回。MvvmCross Android MvxListView DrawableName不刷新
的DataModel
public class VehicleStatus
{
public string VehicleRegistration { get; set; }
public bool Selected { get; set; }
public string DrawableName
{
get
{
string res = (Selected) ? "on" : "off";
return res;
}
}
}
两个 “开” 和 “关” 是是可绘制文件夹内的PNG资源。
MvxListView布局摘录
<Mvx.MvxListView
android:id="@+id/listItems"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:dividerHeight="2dp"
android:divider="@drawable/list_divider"
local:MvxBind="ItemsSource Units; ItemClick VehicleSelectedCommand"
local:MvxItemTemplate="@layout/list_unit" />
MvxItemTemplate
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res/xxxxxxx.Droid"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:background="@color/white"
android:layout_height="62dp">
<TextView
android:id="@+id/unitsName"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:textSize="18dp"
android:gravity="center"
android:layout_margin="7dp"
android:textColor="@color/verydarknavy"
local:MvxBind="Text VehicleRegistration" />
<ImageView
android:id="@+id/notificationUnitImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="21dp"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
local:MvxBind="DrawableName DrawableName "
android:tint="@color/verydarknavy" />
</RelativeLayout>
视图模型
private ObservableCollection<VehicleStatus> _units;
public ObservableCollection<VehicleStatus> Units
{
get { return _units; }
set { _units = value;
RaisePropertyChanged (() => Units); }
}
和命令
public void VehicleSelected (VehicleStatus item)
{
if (item != null)
{
foreach (var unit in _units)
{
if (unit.Id == item.Id)
{
unit.Selected = !unit.Selected;
break;
}
}
RaisePropertyChanged (() => Units);
}
}
private MvxCommand<VehicleStatus> _vehicleSelectedCommand;
public System.Windows.Input.ICommand VehicleSelectedCommand
{
get
{
_vehicleSelectedCommand = _vehicleSelectedCommand ?? new MvxCommand<VehicleStatus>(VehicleSelected);
return _vehicleSelectedCommand;
}
}
我认为这是源的所有相关位。我认为我错过了一些让ImageView刷新的东西,但我不知道是什么。任何想法,将不胜感激。
谢谢斯图尔特,现在像一个梦一样运作!!!! – JDibble