如何在 xamarin.forms 中获取状态栏高度? [英] how can i get status bar height in xamarin.forms?

问题描述

我正在尝试在我的应用程序中获取状态/操作栏高度.我得到了一些如何在原生 android 中获得它的方法.我们可以在 xamarin.forms 中获取状态/操作栏高度吗?如果是，那么如何?如果有人对此有想法，请提供帮助.

I am trying to get status / action bar height in my application. I got some of how we can get it in native android. can we get status / action bar height in xamarin.forms ?if yes then how? please help if anybody have idea about it.

推荐答案

您可以通过创建自己的依赖服务来实现这一点.(https://developer.xamarin.com/guides/xamarin-forms/application-fundamentals/dependency-service/introduction/)

You can do this by creating your own dependency service. (https://developer.xamarin.com/guides/xamarin-forms/application-fundamentals/dependency-service/introduction/)

在您的共享代码中，创建一个接口，例如 IStatusBar:

In your shared code, create an interface for example IStatusBar:

public interface IStatusBar
    {
        int GetHeight();
    }

为 Android 平台添加实现:

Add implementation for Android platform:

[assembly: Dependency(typeof(StatusBar))]
namespace StatusBarApp.Droid
{
    class StatusBar : IStatusBar
    {
        public static Activity Activity { get; set; }

        public int GetHeight()
        {
            int statusBarHeight = -1;
            int resourceId = Activity.Resources.GetIdentifier("status_bar_height", "dimen", "android");
            if (resourceId > 0)
            {
                statusBarHeight = Activity.Resources.GetDimensionPixelSize(resourceId);
            }
            return statusBarHeight;
        }
    }
}

Activity 属性是从 MainActivity.cs 设置的:

Activity property is set from MainActivity.cs:

public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {
        protected override void OnCreate(Bundle bundle)
        {
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;

            base.OnCreate(bundle);

            global::Xamarin.Forms.Forms.Init(this, bundle);

            StatusBar.Activity = this;

            LoadApplication(new App());
        }
    }

这是从共享代码中调用实现的方式:

This is how you call the implementation from the shared code:

int statusBarHeight = DependencyService.Get<IStatusBar>().GetHeight();

IOS平台实现:

[assembly: Dependency(typeof(StatusBar))]
namespace StatusBarApp.iOS
{
    class StatusBar : IStatusBar
    {
        public int GetHeight()
        {
            return (int)UIApplication.SharedApplication.StatusBarFrame.Height;
        }
    }
}

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