Xamarin.Forms v3 中的 MasterDetail + 从右到左

MasterDetail + Right-to-Left in Xamarin.Forms v3

我正在使用从右到左的新表单功能,除了 MasterDetail 汉堡包菜单图标外,它工作正常。它留在左侧,我需要在更改本地化时将其移动到右侧。任何想法或有人可以帮助我使用自定义渲染器吗?

并非不可能,但需要一些肮脏的编码:

please check the solution here

回顾一下: 要在 IOS 上强制布局 RTL 和 LTR:

1- 创建这个 class/service

using System;
using System.IO;
using Xamarin.Forms;
using yourproject.iOS;
using yourproject.database;
using ObjCRuntime;
using System.Runtime.InteropServices;
using UIKit;
using System.Diagnostics;

[assembly: Dependency(typeof(PathManager_IOS))]
namespace yourproject.iOS
{
 public class PathManager_IOS : IPathManager
 {
[DllImport(ObjCRuntime.Constants.ObjectiveCLibrary, EntryPoint = "objc_msgSend")]
internal extern static IntPtr IntPtr_objc_msgSend(IntPtr receiver, IntPtr selector, UISemanticContentAttribute arg1);

    public PathManager_IOS()
    {

    }
   public void SetLayoutRTL()
    {
        try
        {
            Selector selector = new Selector("setSemanticContentAttribute:");
            IntPtr_objc_msgSend(UIView.Appearance.Handle, selector.Handle, UISemanticContentAttribute.ForceRightToLeft);
        }
        catch (Exception s)
        {
            Debug.WriteLine("failed to set layout...."+s.Message.ToString());
        }
    }
    public void SetLayoutLTR()
    {
        try
        {
            Selector selector = new Selector("setSemanticContentAttribute:");
            IntPtr_objc_msgSend(UIView.Appearance.Handle, selector.Handle, UISemanticContentAttribute.ForceLeftToRight);
        }
        catch (Exception s)
        {
            Debug.WriteLine("failed to set layout...." + s.Message.ToString());
        }
    }
 }
} 

ps:请将"yourproject"改为您的项目名称...

启动时调用

在AppDelegate.cs

   PathManager_IOS pathManager = new PathManager_IOS();
   if (lang == 3)
    {
      pathManager.SetLayoutRTL();/* RTL */

    }
    if (lang == 1||lang == 2)
    {
       pathManager.SetLayoutLTR();/*   LTR   */
    }
    LoadApplication(new App(m, lang));

从 PCL 共享页面或项目

调用它
/* arabic */
DependencyService.Get<IPathManager>().SetLayoutRTL();

/* English */
DependencyService.Get<IPathManager>().SetLayoutLTR();

不要忘记设置语言更改时的流向

if(lang==3)
                {//arabic 
                    this.FlowDirection = FlowDirection.RightToLeft;
                    this.Master.FlowDirection= FlowDirection.RightToLeft;
                    this.Detail.FlowDirection= FlowDirection.RightToLeft;

                } 

希望这个帮助ps!所有这一切都是为了那个汉堡图标!

干杯, 拉比

要强制 Android 导航栏为 RTL,请在 Android 项目上使用 masterDetailPage 渲染器,如下所示:

public class MyMasterDetailPageRenderer : MasterDetailPageRenderer
{
    public MyMasterDetailPageRenderer(Context context) : base(context)
    {


    }
    protected override void OnLayout(bool changed, int l, int t, int r, int b)
    {
        base.OnLayout(changed, l, t, r, b);
        var toolbar = FindViewById<Android.Support.V7.Widget.Toolbar>(Resource.Id.toolbar);
        toolbar.LayoutDirection = LayoutDirection.Rtl;

    }


}

第一步设置主方向流

<MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="APPNAME.MainPage"
                  FlowDirection="RightToLeft">

而对于 Android,您需要将 android:supportsRtl="true" 添加到 AndroidManifest.xml,例如

<application android:label="APPNAME.Android" android:theme="@style/MainTheme" android:supportsRtl="true"></application>

然后您的主页是 rtl 以及操作栏。