Monodroid对话框透明背景

Question

我正在尝试在 Xamarin android 中将我的对话框背景设置为透明，但我无法正确实现。

http://i.stack.imgur.com/VFYZs.jpg

即使我将背景设置为透明，对话框顶部仍然有一条蓝线。我怎样才能让我的背景完全透明。谢谢。

主要Activity;

[Activity(Label = "LoadingExample2", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {
        private Dialog builder;

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            SetContentView(Resource.Layout.Main);

            Button button = FindViewById<Button>(Resource.Id.MyButton);

            builder = new Dialog(this);
            var view = LayoutInflater.Inflate(Resource.Layout.Loading,null);
            builder.SetContentView(view);
            builder.Window.SetBackgroundDrawableResource(global::Android.Resource.Color.Transparent);

            button.Click += delegate
            {
                builder.Show();
            };
        }
    }

Loading.axml;

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:minWidth="25px"
    android:minHeight="25px"
    android:background="#00ffffff"
    android:id="@+id/relativeLayout2">
    <RelativeLayout
        android:minWidth="25px"
        android:minHeight="25px"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/relativeLayout1"
        android:layout_centerInParent="true"
        android:padding="5dp"
        android:background="@android:color/background_light">
        <ProgressBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/progressBar1"
            android:layout_centerHorizontal="true" />
        <TextView
            android:text="Loading"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/textView1"
            android:textColor="@android:color/black"
            android:layout_below="@id/progressBar1"
            android:textSize="15sp"
            android:layout_centerHorizontal="true" />
    </RelativeLayout>
</RelativeLayout>

Answer 1

一个简单的方法是隐藏栏本身：

int divierId = builder.Window.Context.Resources.GetIdentifier("android:id/titleDivider", null, null);
builder.Window.FindViewById(divierId)
 .SetBackgroundColor(Resources.GetColor(global::Android.Resource.Color.Transparent));

Monodroid对话框透明背景

Monodroid Dialog transparent background

android

xamarin.android

android-dialog

xamarin