xamarin/Xamarin.Forms

Webviews aren't being garbage collected when the containing page is popped

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#1,430 创建于 2017年12月20日

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描述

Migrated from https://bugzilla.xamarin.com/show_bug.cgi?id=55749

Description

In the sample program, ThirdPage contains a webview defined in the xaml. Nothing is done to the webview in the code. Run the program and press the ThirdPage button, then the back arrow, 5 times and look at the memory allocations - there are 5 instances of the ThirdPage, WebView, WebViewRenderer, and WebClient (snapshot1 in the attached file). Not tap the button to garbage collect. The instances of ThirdPage and WebView drops to one, but WebViewRenderer and WebViewClient are still 5 (snapshot2). Why aren't these garbage collected?

Basic Information

  • Version with issue: 2.3.4

Reproduction Link

MemoryTest0.zip

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