using System;
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using Android.Content;
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using Android.Views;
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using Android.Util;
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using Android.Runtime;
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using Android.Widget;
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using Android.OS;
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using Android.Views.Animations;
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namespace Shared
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{
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//已经全面检查了代码
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/// <summary>
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/// 在滑动事件下，可显示隐藏些自定义视图
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/// </summary>
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public class RowLayout : ViewGroup
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{
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AndroidRowLayout androidRowLayout;
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uint lineColor = 0x62818181;
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/// <summary>
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/// 背景颜色
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/// </summary>
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/// <value>The color of the background.</value>
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public virtual uint LineColor
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{
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get
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{
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return lineColor;
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}
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set
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{
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lineColor = value;
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byte r, g, b, a;
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r = (byte)(lineColor / 256 / 256 % 256);
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g = (byte)(lineColor / 256 % 256);
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b = (byte)(lineColor % 256);
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a = (byte)(lineColor / 256 / 256 / 256 % 256);
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lineLinearLayout.SetBackgroundColor(Android.Graphics.Color.Argb(a, r, g, b));
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}
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}
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/// <summary>
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/// 宽度设置或读取
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/// </summary>
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/// <value>The width.</value>
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public override int Width
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{
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get
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{
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return base.Width;
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}
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set
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{
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base.Width = value;
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if (!IsCanRefresh)
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{
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return;
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}
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var layoutParameters = androidRowLayout.LayoutParameters;
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layoutParameters.Width = Width;
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androidRowLayout.LayoutParameters = layoutParameters;
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}
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}
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/// <summary>
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/// 视图高度
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/// </summary>
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/// <value>The height.</value>
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public override int Height
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{
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get
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{
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return base.Height;
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}
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set
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{
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base.Height = value;
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if (!IsCanRefresh)
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{
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return;
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}
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var layoutParameters = androidRowLayout.LayoutParameters;
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layoutParameters.Height = Height;
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androidRowLayout.LayoutParameters = layoutParameters;
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}
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}
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Android.Widget.LinearLayout leftLinarLayout;
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Android.Widget.LinearLayout rightLinarLayout;
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Android.Widget.LinearLayout lineLinearLayout;
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/// <summary>
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/// 在滑动事件下，可显示隐藏些自定义视图
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/// </summary>
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public RowLayout()
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{
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viewGroup = new Android.Widget.FrameLayout(Application.Activity);
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androidRowLayout = new AndroidRowLayout(Application.Activity, this) { };
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androidRowLayout.RightToLeftAction += () =>
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{
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openRightMenu();
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};
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androidRowLayout.LeftToRightAction += () =>
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{
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openLeftMenu();
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};
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realViewGroup = androidRowLayout;
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leftLinarLayout = new Android.Widget.LinearLayout(Application.Activity) { Orientation = Android.Widget.Orientation.Horizontal, Alpha = 0.0f };
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rightLinarLayout = new Android.Widget.LinearLayout(Application.Activity) { Orientation = Android.Widget.Orientation.Horizontal, Alpha = 0.0f };
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lineLinearLayout = new Android.Widget.LinearLayout(Application.Activity);
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LineColor = lineColor;
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viewGroup.AddView(leftLinarLayout, new Android.Views.ViewGroup.LayoutParams(Android.Views.ViewGroup.LayoutParams.WrapContent, Android.Views.ViewGroup.LayoutParams.MatchParent));
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viewGroup.AddView(rightLinarLayout, new Android.Views.ViewGroup.LayoutParams(Android.Views.ViewGroup.LayoutParams.WrapContent, Android.Views.ViewGroup.LayoutParams.MatchParent));
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viewGroup.AddView(androidRowLayout, new Android.Views.ViewGroup.LayoutParams(Android.Views.ViewGroup.LayoutParams.MatchParent, Android.Views.ViewGroup.LayoutParams.MatchParent));
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viewGroup.AddView(lineLinearLayout, new Android.Widget.FrameLayout.LayoutParams(Android.Views.ViewGroup.LayoutParams.MatchParent, DensityUtil.Dip2Px(1), Android.Views.GravityFlags.Bottom));
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}
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void openLeftMenu()
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{
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if (androidRowLayout.isShowRight)
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{
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hideRightMenu();
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return;
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}
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if (leftLinarLayout.ChildCount == 0)
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return;
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androidRowLayout.isShowLeft = true;
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Android.Widget.FrameLayout.LayoutParams lp = (Android.Widget.FrameLayout.LayoutParams)androidRowLayout.LayoutParameters;
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lp.LeftMargin = leftLinarLayout.LayoutParameters.Width;
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androidRowLayout.LayoutParameters = lp;
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leftLinarLayout.Alpha = 1.0f;
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if (leftLinarLayout.Animation == null)
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{
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leftLinarLayout.Animation = new TranslateAnimation(
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Dimension.RelativeToSelf, 0.1f,
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Dimension.RelativeToSelf, 0,
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Dimension.RelativeToSelf, 0,
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Dimension.RelativeToSelf, 0);
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leftLinarLayout.Animation.Duration = 200;
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}
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// Animation = leftUIView.Animation;
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//Animation.Reset();
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//Animation.StartNow();
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leftLinarLayout.Animation.Reset();
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leftLinarLayout.Animation.StartNow();
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// UIView.Animate (0.2f, 0.0f, UIViewAnimationOptions.BeginFromCurrentState, () => {
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// contentView.X = (int)leftUIView.Frame.Width;
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// leftUIView.Alpha = 1.0f;
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// }, () => {
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//
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// });
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}
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void hideLeftMenu()
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{
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androidRowLayout.isShowLeft = false;
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Android.Widget.FrameLayout.LayoutParams lp = (Android.Widget.FrameLayout.LayoutParams)androidRowLayout.LayoutParameters;
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lp.LeftMargin = 0;
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androidRowLayout.LayoutParameters = lp;
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leftLinarLayout.Alpha = 0.0f;
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// UIView.Animate(0.2f,0.0f,UIViewAnimationOptions.BeginFromCurrentState,()=>{
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// contentView.X=0;
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// leftUIView.Alpha=0.0f;
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// },()=>{
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//
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// });
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}
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void openRightMenu()
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{
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if (androidRowLayout.isShowLeft)
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{
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hideLeftMenu();
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return;
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}
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if (rightLinarLayout.ChildCount == 0)
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return;
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androidRowLayout.isShowRight = true;
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Android.Widget.FrameLayout.LayoutParams lp = (Android.Widget.FrameLayout.LayoutParams)androidRowLayout.LayoutParameters;
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lp.LeftMargin = -rightLinarLayout.LayoutParameters.Width;
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androidRowLayout.LayoutParameters = lp;
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rightLinarLayout.Alpha = 1.0f;
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if (rightLinarLayout.Animation == null)
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{
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rightLinarLayout.Animation = new TranslateAnimation(
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Dimension.RelativeToSelf, -0.1f,
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Dimension.RelativeToSelf, 0.0f,
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Dimension.RelativeToSelf, 0,
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Dimension.RelativeToSelf, 0);
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rightLinarLayout.Animation.Duration = 200;
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}
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//Animation = rightUIView.Animation;
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//Animation.Reset();
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//Animation.StartNow();
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rightLinarLayout.Animation.Reset();
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rightLinarLayout.Animation.StartNow();
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}
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void hideRightMenu()
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{
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androidRowLayout.isShowRight = false;
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Android.Widget.FrameLayout.LayoutParams lp = (Android.Widget.FrameLayout.LayoutParams)androidRowLayout.LayoutParameters;
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lp.LeftMargin = 0;
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androidRowLayout.LayoutParameters = lp;
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rightLinarLayout.Alpha = 0.0f;
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}
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/// <summary>
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/// 子视图的宽度
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/// </summary>
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int subViewWidth = 100;
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/// <summary>
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/// 增加左边视图
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/// </summary>
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/// <param name="view">View.</param>
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public void AddLeftView(View view)
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{
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leftLinarLayout.AddView(view.AndroidView, new Android.Views.ViewGroup.LayoutParams(DensityUtil.Dip2Px(subViewWidth), androidRowLayout.LayoutParameters.Height));
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leftLinarLayout.LayoutParameters.Width = leftLinarLayout.ChildCount * DensityUtil.Dip2Px(subViewWidth);
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view.Parent = this;
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view.Width = DensityUtil.Dip2Px(subViewWidth);
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view.Height = androidRowLayout.LayoutParameters.Height;
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}
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/// <summary>
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/// 增加右边视图
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/// </summary>
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/// <param name="view">View.</param>
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public void AddRightView(View view)
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{
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rightLinarLayout.AddView(view.AndroidView, new Android.Views.ViewGroup.LayoutParams(DensityUtil.Dip2Px(subViewWidth), androidRowLayout.LayoutParameters.Height));
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rightLinarLayout.LayoutParameters.Width = rightLinarLayout.ChildCount * DensityUtil.Dip2Px(subViewWidth);
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((Android.Widget.FrameLayout.LayoutParams)rightLinarLayout.LayoutParameters).LeftMargin = androidRowLayout.LayoutParameters.Width - rightLinarLayout.LayoutParameters.Width;
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view.Parent = this;
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view.Width = DensityUtil.Dip2Px(subViewWidth);
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view.Height = androidRowLayout.LayoutParameters.Height;
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}
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class AndroidRowLayout : Android.Widget.FrameLayout
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{
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View _view;
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int mTouchSlop
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{
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get
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{
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var configuration = ViewConfiguration.Get(Context);
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//最小的滑动距离
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return configuration.ScaledTouchSlop;
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}
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}
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public AndroidRowLayout(Context context, View view)
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: base(context)
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{
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_view = view;
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}
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float mLastX, mLastY;
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internal bool isShowLeft;
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internal bool isShowRight;
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public Action RightToLeftAction;
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public Action LeftToRightAction;
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bool isActioned;
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bool action(MotionEvent e)
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{
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switch (e.Action)
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{
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case MotionEventActions.Down:
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//记录点击的最新X坐标
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mLastX = e.RawX;
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mLastY = e.RawY;
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Parent?.RequestDisallowInterceptTouchEvent(true);
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break;
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case MotionEventActions.Move:
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var x = e.RawX;
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var y = e.RawY;
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var deltaX = x - mLastX;
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var deltaY = y - mLastY;
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if (Math.Abs(deltaY) < Math.Abs(deltaX))
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{
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if (!isActioned)
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{
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//RightToLeftAction
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if (deltaX < -mTouchSlop)
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{
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isActioned = true;
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//parentDelay(true);
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//System.Console.WriteLine("RowLayout:DispatchTouchEvent:RightToLeft");
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RightToLeftAction?.Invoke();
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}
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//LeftToRightAction
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if (mTouchSlop < deltaX)
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{
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isActioned = true;
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//parentDelay(true);
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//System.Console.WriteLine("RowLayout:DispatchTouchEvent:LeftToRight");
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LeftToRightAction?.Invoke();
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}
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}
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return true;
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}
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else
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{
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//上下滑动时，允许父控件的拦截
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if (4 < Math.Abs(deltaY))
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{
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Parent?.RequestDisallowInterceptTouchEvent(false);
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}
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}
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break;
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}
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return false;
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}
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/// <summary>
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/// 执行OnInterceptTouchEvent和OnTouchEvent
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/// </summary>
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/// <returns><c>true</c>事件已经处理<c>false</c>事件没有处理</returns>
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/// <param name="e">E.</param>
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public override bool DispatchTouchEvent(MotionEvent e)
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{
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System.Console.WriteLine($"{GetType()} Height->{Height} Width->{Width} DispatchTouchEvent->{e.Action}");
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if (e.Action == MotionEventActions.Down)
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{
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isActioned = false;
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//还原允许拦截事件
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RequestDisallowInterceptTouchEvent(false);
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}
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return base.DispatchTouchEvent(e);
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}
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public override bool OnInterceptTouchEvent(MotionEvent e)
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{
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System.Console.WriteLine($"{GetType()} Height->{Height} Width->{Width} OnInterceptTouchEvent->{e.Action}");
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if (disallowIntercept)
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{
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return false;
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}
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if (action(e))
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{
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return true;
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}
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return base.OnInterceptTouchEvent(e);
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}
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/// <summary>
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/// 重写点击事件
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/// </summary>
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/// <returns><c>true</c>, if touch event was oned, <c>false</c> otherwise.</returns>
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/// <param name="e">E.</param>
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public override bool OnTouchEvent(MotionEvent e)
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{
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System.Console.WriteLine($"{GetType()} Height->{Height} Width->{Width} OnTouchEvent->{e.Action}");
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if (!isActioned)
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{
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_view.TouchEvent(e);
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}
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action(e);
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return true;
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}
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bool disallowIntercept;
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public override void RequestDisallowInterceptTouchEvent(bool disallowIntercept)
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{
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this.disallowIntercept = disallowIntercept;
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System.Console.WriteLine($"{GetType()} Height->{Height} RequestDisallowInterceptTouchEvent->{disallowIntercept}");
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base.RequestDisallowInterceptTouchEvent(disallowIntercept);
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Parent?.RequestDisallowInterceptTouchEvent(disallowIntercept);
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}
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}
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}
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}
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