话不多说，源码在此：
using System; using Android.Content; using Android.Views; using Android.Widget; using Android.Util; namespace FirstApp.Widget { class SlideMenu : HorizontalScrollView { /** * 屏幕宽度 */ private int mScreenWidth; /** * dp */ private int mMenuRightPadding = 50; /** * 菜单的宽度 */ private int mMenuWidth; private int mHalfMenuWidth; private bool isOpen; ViewGroup menu; private Boolean once; public SlideMenu(Context context, IAttributeSet attribute) : base(context, attribute) { mScreenWidth = context.Resources.DisplayMetrics.WidthPixels; } protected override void OnMeasure(int widthMeasureSpec, int heightMeasureSpec) { if (!once) { LinearLayout wrapper = (LinearLayout)GetChildAt(0); menu = (ViewGroup)wrapper.GetChildAt(0); ViewGroup content = (ViewGroup)wrapper.GetChildAt(1); // dp to px mMenuRightPadding = (int)TypedValue.ApplyDimension( ComplexUnitType.Dip, mMenuRightPadding, content .Resources.DisplayMetrics); mMenuWidth = mScreenWidth - mMenuRightPadding; mHalfMenuWidth = mMenuWidth / 2; menu.LayoutParameters.Width = mMenuWidth; content.LayoutParameters.Width = mScreenWidth; } base.OnMeasure(widthMeasureSpec, heightMeasureSpec); } protected override void OnLayout(bool changed, int left, int top, int right, int bottom) { base.OnLayout(changed, left, top, right, bottom); if (changed) { // 将菜单隐藏 this.ScrollTo(mMenuWidth, 0); once = true; } } public override bool OnInterceptTouchEvent(MotionEvent ev) { switch (ev.ActionMasked) { case MotionEventActions.Down: if (ev.RawX < 30 && !isOpen) { //ev.Action = MotionEventActions.Cancel; //DispatchTouchEvent(ev); return true; } if (isOpen) { return true; } break; } return false; } public override bool OnTouchEvent(MotionEvent ev) { MotionEventActions action = ev.ActionMasked; switch (action) { case MotionEventActions.Down: if (ev.RawX > 30 && !isOpen) { ev.Action = MotionEventActions.Cancel; DispatchTouchEvent(ev); } break; // Up时，进行判断，如果显示区域大于菜单宽度一半则完全显示，否则隐藏 case MotionEventActions.Up: int scrollX = ScrollX; if (isOpen) { if (scrollX > 2*mMenuWidth / 5) { this.SmoothScrollTo(mMenuWidth, 0); isOpen = false; } else { this.SmoothScrollTo(0, 0); } if(ev.RawX> mMenuWidth && scrollX==0) { this.SmoothScrollTo(mMenuWidth, 0); isOpen = false; } } else { if (scrollX < mMenuWidth * 3 / 5) { this.SmoothScrollTo(0, 0); isOpen = true; } else { this.SmoothScrollTo(mMenuWidth, 0); } } return true; } return base.OnTouchEvent(ev); } public bool getStatus() { return isOpen; } public void openMenu() { if (isOpen) { this.SmoothScrollTo(mMenuWidth, 0); isOpen = false; } } public void closeMenu() { if (!isOpen) { this.SmoothScrollTo(0, 0); isOpen = true; } } } } 布局文件： <?xml version="1.0" encoding="utf-8"?> <FirstApp.Widget.SlideMenu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#ffffff" android:scrollbars="none"> <LinearLayout android:layout_width="wrap_content" android:layout_height="fill_parent" android:orientation="horizontal"> <LinearLayout android:layout_width="wrap_content" android:layout_height="fill_parent" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="fill_parent" android:orientation="vertical"> <EditText android:inputType="textPersonName" android:layout_width="200dp" android:layout_height="wrap_content" android:hint="username" android:id="@+id/editText1" /> <EditText android:layout_width="200dp" android:layout_height="wrap_content" android:hint="password" /> <Button android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="确定" android:id="@+id/btn_sure" /> <ImageView android:src="@android:drawable/ic_menu_gallery" android:layout_width="200dp" android:layout_height="150dp" android:id="@+id/imageView1" /> <Button android:text="testDB" android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/button1" /> <FirstApp.Widget.MyIndicator android:layout_width="wrap_content" android:layout_height="40dp" android:background="#cccccc" android:id="@+id/indicor" /> <android.support.v4.view.ViewPager android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/viewPager1" /> </LinearLayout> </LinearLayout> </FirstApp.Widget.SlideMenu> 注意，必须有一个组件把menu和containt包裹，这是HorizontalScrollView特性决定的。使用时主要用openMenu()和closeMenu()方法就行了。其它自己具体设置吧。
