c# - Xamarin.Android : Gravity parameter in DrawerLayout. 布局参数

Question

我正在尝试使用 Xamarin.Android 以编程方式创建一个 DrawerLayout，但在尝试添加 ListView 时遇到了问题应该可以从左侧拖动..

这是我的代码:

DrawerLayout myDrawerLayout = new DrawerLayout(this);
myDrawerLayout.LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
SetContentView(myDrawerLayout);


FrameLayout myFrameLayout = new FrameLayout(this);
myFrameLayout.LayoutParameters = new DrawerLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
myFrameLayout.SetBackgroundColor(Android.Graphics.Color.Gray);
myDrawerLayout.AddView(myFrameLayout);


ListView myListView = new ListView(this);
myListView.SetBackgroundColor(Android.Graphics.Color.Green);
myListView.LayoutParameters = new DrawerLayout.LayoutParams( width: 240,
                                                  height: DrawerLayout.LayoutParams.MatchParent,
                                                  gravity: ????????
                                                           );
myDrawerLayout.AddView(myListView);

如您所见..我不知道要传递什么作为gravity参数

DrawerLayout 类中函数的定义是这样的:

public LayoutParams(int width, int height, int gravity);

所以我必须为 gravity 传递 int，但是怎么做呢？？

我试过以下方法:

myListView.LayoutParameters = new DrawerLayout.LayoutParams( width: 240, height: DrawerLayout.LayoutParams.MatchParent, gravity: Gravity.LEFT);

它给我错误:

'Gravity' does not contain a definition for 'LEFT'

也尝试过:

myListView.LayoutParameters = new DrawerLayout.LayoutParams( width: 240, height: DrawerLayout.LayoutParams.MatchParent, gravity: GravityFlags.Left);

但给我一个错误:

cannot convert from 'Android.Views.GravityFlags' to 'int'

希望您对解决方案有所了解..提前致谢

Answer 1

你必须将标志转换为 int 之类的

new DrawerLayout.LayoutParams(240, DrawerLayout.LayoutParams.WrapContent, (int)(GravityFlags.Start | GravityFlags.Left)).