我在ffimageloading中有一些图像列表视图：CachedImage库....但是...当我测试时我正在反复做：我打开列表视图并按下操作栏上的后退按钮，在确定的时间，我按后退按钮我有一个例外：
03-02 09：31：13.511 I / art（2430）：启动阻止GC显式03-02 09：31：13.522 I / art（2430）：将目标GC堆从108MB钳制到96MB 03-02 09:31： 13.522 I / art（2430）：显式并发标记扫描GC释放10820（745KB）AllocSpace对象，90（1956KB）LOS对象，3％免费，92MB / 96MB，暂停136us总计9.552ms 03-02 09：31：13.535 D /单声道（2430）：GC_OLD_BRIDGE NUM-对象997个num_hash_entries 50753个SCCS大小25365个初始化0.00ms DF1 37.29ms排序7.73ms DFS2 26.26ms设置-CB 1.58ms自由数据17.62ms链路67211/67211/24685/2 DFS传递118961 / 92576九月3日至2日：31：13.535 d /单声道（2430）：GC_BRIDGE：在使用9136K：：完成，正在运行为79.60ms九月3日至2日：31：13.535 d /单声道（2430）：GC_MAJOR_SWEEP：主要尺寸8634K 03-02 09：31：13.535 D / Mono（2430）：GC_MAJOR :( LOS溢出）时间60.53ms，stw 67.10ms los size：27648K in use：8339K 03-02 09：31：13.578 I / art（2430） ：启动阻止GC Alloc 03-02 09：31：13.578 I / art（2430）：启动阻止GC Alloc 03-02 09：31：13.580 I / art（2430）：开始封锁GC Alloc 03-02 09：31：13.585 I / art（2430）：夹紧目标GC堆从108MB到96MB 03-02 09：31：13.585 I / art（2430）：Alloc部分并发标记扫描GC释放4847（397KB）AllocSpace对象，0（0B）LOS对象，4％免费，92MB / 96MB，暂停191us总计5.177ms 03-02 09：31：13.585 I / art（2430）：启动阻止GC Alloc 03-02 09：31：13.594 I / art（2430）：Clamp目标GC堆从108MB到96MB 03-02 09：31：13.594 I / art（2430）：Alloc并发标记扫描GC释放3（96B）AllocSpace对象，0（ 0B）LOS对象，4％免费，92MB / 96MB，暂停172us总计8.267ms 03-02 09：31：13.594 I / art（2430）：强制收集SoftReferences以进行7MB分配03-02 09：31：13.594 I / art（2430）：启动阻止GC Alloc 03-02 09：31：13.602 I / art（2430）：钳制目标GC堆从108MB到96MB 03-02 09：31：13.602 I / art（2430）：Alloc并发mark sweep GC释放3（96B）AllocSpace对象，0（0B）LOS对象，4％免费，92MB / 96MB，暂停178us总计7.794ms 03-02 09：31：13.602 W / art（2430）：抛出OutOfMemoryError“无法分配带有4161352个空闲字节的8294412字节分配和3MB直到OOM”03-02 09：31：13.602 I / art（2430）：启动阻止GC Alloc 03-02 09：31：13.602 I / art （2430）：启动阻塞GC Alloc 03-02 09：31：13.604 I / art（2430）：启动阻塞GC Alloc 03-02 09：31：13.609 I / art（2430）：从108MB夹紧目标GC堆至96MB 03-02 09：31：13.609 I / art（2430）：启动阻止GC Alloc 03-02 09：31：13.613 I / art（2430）：将目标GC堆从108MB夹紧到96MB 03-02 09： 31：13.614 I / art（2430）：强制收集SoftReferences以进行7MB分配03-02 09：31：13.614 I / art（2430）：启动阻止GC Alloc 03-02 09：31：13.621 I / art（2430） ）：Clamp目标GC堆从108MB到96MB 03-02 09：31：13.621 I / art（2430）：Alloc并发标记扫描GC释放3（96B）AllocSpace对象，0（0B）LOS对象，4％免费，92MB / 96MB，暂停186us总计7.048ms 03-02 09：31：13.621 W / art（2430）：抛出OutOfMemoryError“无法分配8294412 byt分配4162792个空闲字节和3MB直到OOM“03-02 09：31：13.621 D / skia（2430）：---分配位图分配失败未处理异常：Java.Lang.OutOfMemoryError：无法分配8294412字节分配使用4162792个空闲字节和3MB直到OOM
在此错误之前我也可以在输出中看到：
03-02 09：28：17.208 I / mono-stdout（2430）：在C：\ projects \ ffimageloading \ source \ FFImageLoading.Common中的FFImageLoading.MiniLoggerWrapper.Error（System.String errorMessage，System.Exception ex）[0x00000] \ Helpers \ MiniLoggerWrapper.cs：30 03-02 09：28：17.208 I / mono-stdout（2430）：在C：\ projects中的FFImageLoading.MiniLoggerWrapper.Error（System.String errorMessage，System.Exception ex）[0x00000] \ ffimageloading \源\ FFImageLoading.Common \助手\ MiniLoggerWrapper.cs：30九月3日至2日：28：17.208 I /单标准输出（2430）：在FFImageLoading.MiniLoggerWrapper.Error（System.String的errorMessage，System.Exception的前） [0x00000]在C：\ projects \ ffimageloading \ source \ FFImageLoading.Common \ Helpers \ MiniLoggerWrapper.cs：30 03-02 09：28：17.208 I / mono-stdout（2430）：at FFImageLoading.MiniLoggerWrapper.Error（System。字符串errorMessage，System.Exception ex）[0x00000]在C：\ projects \ ffimageloading \ source \ FFImageLoading.Common \ Helpers \ MiniLoggerWrapper.cs：30 03-02 09：28：17.208 I / mono-stdout（2430）：at FFImageLoading.MiniL oggerWrapper.Error（System.String errorMessage，System.Exception ex）[0x00000]在C：\ projects \ ffimageloading \ source \ FFImageLoading.Common \ Helpers \ MiniLoggerWrapper.cs：30 03-02 09：28：17.208 I / mono-标准输出（2430）：在FFImageLoading.MiniLoggerWrapper.Error（System.String的errorMessage，System.Exception的前）[0x00000]在C：\项目\ ffimageloading \源\ FFImageLoading.Common \助手\ MiniLoggerWrapper.cs：30 9月3日至2日：28：17.208 I /单标准输出（2430）：在FFImageLoading.MiniLoggerWrapper.Error（System.String的errorMessage，System.Exception的前）[0x00000]在C：\项目\ ffimageloading \源\ FFImageLoading.Common \助手\ MiniLoggerWrapper .cs：30 03-02 09：28：17.208 I / mono-stdout（2430）：在C：\ projects \ ffimageloading \ source中的FFImageLoading.MiniLoggerWrapper.Error（System.String errorMessage，System.Exception ex）[0x00000] \ FFImageLoading.Common \ Helpers \ MiniLoggerWrapper.cs：30 03-02 09：28：17.208 I / mono-stdout（2430）：在FFImageLoading.MiniLoggerWrapper.Error（System.String errorMessage，System.Exception） ex）[0x00000]在C：\ projects \ ffimageloading \ source \ FFImageLoading.Common \ Helpers \ MiniLoggerWrapper.cs：30 03-02 09：28：17.208 I / mono-stdout（2430）：at FFImageLoading.MiniLoggerWrapper.Error（ System.String errorMessage，System.Exception ex）[0x00000]在C：\ projects \ ffimageloading \ source \ FFImageLoading.Common \ Helpers \ MiniLoggerWrapper.cs：30 03-02 09：28：17.208 I / mono-stdout（2430） ：---抛出异常的前一个位置的堆栈跟踪结束--- 03-02 09：28：17.208 I / mono-stdout（2430）：at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）[0x0000c]在<657aa8fea4454dc898a9e5f379c58734>：0 03-02 09：28：17.208 I / mono-stdout（2430）：在<657aa8fea4454dc898a9e5f379c58734中的System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（System.Threading.Tasks.Task任务）[0x0003e]> ：0九月3日至2日：28：17.208 I /单标准输出（2430）：在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（System.Threading.Tasks.Task任务）[0x00028]在<657aa8fea4454dc 898a9e5f379c58734>：0九月3日至2日：28：17.208 I /单标准输出（2430）：在System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd（System.Threading.Tasks.Task任务）[0x00008]在<657aa8fea4454dc898a9e5f379c58734>：0 03-02 09：28：17.208 I / mono-stdout（2430）：在System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1 + ConfiguredTaskAwaiter [TResult] .GetResult（）[0x00000] in <657aa8fea4454dc898a9e5f379c58734>：0 03-02 09： 28：17.208 I /单标准输出（2430）：在FFImageLoading.Work.WorkScheduler + d__43.MoveNext（）[0x001bb]在C：\项目\ ffimageloading \源\ FFImageLoading.Common \工作\ WorkScheduler.cs：158 03- 02 09:28:17.208 I / mono-stdout（2430）：---托管Java.Lang.OutOfMemoryError堆栈跟踪结束--- 03-02 09：28：17.208 I / mono-stdout（2430）：java。 lang.OutOfMemoryError：尝试抛出OutOfMemoryError时抛出OutOfMemoryError;没有堆栈追踪可用03-02 09：28：17.211 I / Choreographer（2430）：跳过80帧！应用程序可能在其主线程上做了太多工作。
我更新了ffimageloading但错误仍在这里...我试过了
MONO_GC_PARAMS=bridge-implementation=old
在环境txt
这是我在PCL中的xaml：
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="neoFly_Montana.Views.ProdutosView"
xmlns:local="clr-namespace:neoFly_Montana.LayoutScripts"
xmlns:interface="clr-namespace:neoFly_Montana.Interface"
xmlns:ffimageloading="clr-namespace:FFImageLoading.Forms;assembly=FFImageLoading.Forms"
BackgroundImage="prodBackground.jpg"
x:Name="ParentHost">
<ContentPage.Content>
<Grid HorizontalOptions="FillAndExpand" RowSpacing="0" VerticalOptions="FillAndExpand">
<Grid.RowDefinitions>
<RowDefinition Height="9.4*"/>
<RowDefinition Height="0.6*"/>
</Grid.RowDefinitions>
<!-- Lista de produtos -->
<ListView Grid.Row="0" Grid.Column="0" ItemSelected="ListView_ItemSelected" CachingStrategy="RecycleElement" BackgroundColor="Transparent" x:Name="listview_produtos" Margin="10,0,10,0" SeparatorVisibility="None" HasUnevenRows="True" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
<ListView.Header>
<!-- Observação -->
<StackLayout>
<StackLayout x:Name="prod_stack_obser" IsVisible="False" Orientation="Horizontal" Spacing="0" HorizontalOptions="FillAndExpand">
<Label x:Name="label_observ" HorizontalTextAlignment="Start" VerticalOptions="Center" FontSize="Small" TextColor="White" Style="{StaticResource labelsfont}" Margin="20,10,0,10" />
<ffimageloading:CachedImage x:Name="lapis" Source="lapis.png" IsVisible="False" HorizontalOptions="EndAndExpand"/>
</StackLayout>
<BoxView HeightRequest="20"/>
</StackLayout>
</ListView.Header>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid Margin="20,0,20,20">
<ffimageloading:CachedImage Source="texturaCateg.png" BackgroundColor="{Binding FundoColor, Source={x:Reference ParentHost}}" Grid.Row="0" Grid.Column="0" Aspect="Fill" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand"/>
<StackLayout Grid.Row="0" Grid.Column="0" VerticalOptions="FillAndExpand" x:Name="produtos_stack_color" Spacing="10">
<StackLayout Spacing="0" Grid.Row="0" Grid.Column="0" HorizontalOptions="FillAndExpand" VerticalOptions="CenterAndExpand">
<StackLayout Orientation="Horizontal" Padding="10,10,10,0" VerticalOptions="Center" HorizontalOptions="FillAndExpand">
<ffimageloading:CachedImage FadeAnimationForCachedImages="True" DownsampleUseDipUnits="True" DownsampleHeight="60" HeightRequest="83" WidthRequest="130" Source="{Binding imagem}" Aspect="Fill" VerticalOptions="CenterAndExpand" HorizontalOptions="CenterAndExpand" >
<!--<ffimageloading:CachedImage.CacheKeyFactory>
<interface:CustomCacheKeyFactory/>
</ffimageloading:CachedImage.CacheKeyFactory>-->
</ffimageloading:CachedImage>
<!--HeightRequest="83" WidthRequest="100"-->
<!--DownsampleHeight="83"-->
<!--<StackLayout Orientation="Horizontal" VerticalOptions="Center" HorizontalOptions="EndAndExpand">
<Label Style="{StaticResource labelsfont}" Text="R$" VerticalOptions="CenterAndExpand" TextColor="{Binding TextColor, Source={x:Reference ParentHost}}" FontSize="Medium"/>
<Label Style="{StaticResource labelsfont}" Text="{Binding valor}" TextColor="{Binding TextColor, Source={x:Reference ParentHost}}" FontAttributes="Bold" VerticalOptions="Start" FontSize="30"/>
</StackLayout>-->
</StackLayout>
<!--nome-->
<Label Text="{Binding nome}" Margin="0,10,0,10" Style="{StaticResource labelsfont}" TextColor="{Binding TextColor, Source={x:Reference ParentHost}}" HorizontalTextAlignment="Center" FontAttributes="Bold" FontSize="Medium" HorizontalOptions="CenterAndExpand"/>
</StackLayout>
<Grid VerticalOptions="FillAndExpand">
<BoxView Grid.Row="0" Grid.Column="0" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" BackgroundColor="WhiteSmoke" Opacity="0.2"/>
<Label Grid.Row="0" Grid.Column="0" Margin="10,10,10,10" HorizontalTextAlignment="Center" Text="{Binding observacao}" Opacity="1" FontSize="Small" Style="{StaticResource labelsfont}" TextColor="{Binding TextColor, Source={x:Reference ParentHost}}" HorizontalOptions="Center" />
</Grid>
</StackLayout>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.Footer>
<StackLayout>
<Grid x:Name="prod_rl_fundo" >
<Grid.Margin>
<OnPlatform x:TypeArguments="Thickness"
iOS="20,0,20,0"
Android="20,10,20,10"/>
</Grid.Margin>
<ffimageloading:CachedImage x:Name="prod_acomp_img" Source="texturaCateg.png" Grid.Row="0" Grid.Column="0" HorizontalOptions="FillAndExpand" Aspect="Fill" VerticalOptions="FillAndExpand"></ffimageloading:CachedImage>
<!--Acompanhamentos-->
<StackLayout x:Name="stack_acompanhamentos" Spacing="0" Grid.Row="0" Grid.Column="0">
<Grid x:Name="prod_acompanhamentos_title" HorizontalOptions="FillAndExpand">
<BoxView Grid.Row="0" Grid.Column="0" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" BackgroundColor="WhiteSmoke" Opacity="0.2"/>
<Label x:Name="produtos_acomp_title" Text="+ Dois Acompanhamentos" Grid.Row="0" Grid.Column="0" Style="{StaticResource labelsfont}" Margin="20,20,20,20" FontAttributes="Bold" VerticalOptions="CenterAndExpand" HorizontalOptions="Center" />
</Grid>
</StackLayout>
</Grid>
<BoxView HeightRequest="50"></BoxView>
</StackLayout>
</ListView.Footer>
</ListView>
<!--Rodapé Grid-->
<Grid Grid.Row="1" Grid.Column="0" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
<ffimageloading:CachedImage Source="rodape.png"
HorizontalOptions="FillAndExpand"
Aspect="AspectFill"
VerticalOptions="FillAndExpand"
Grid.Row="0"/>
<!--Escrito Rodapé-->
<StackLayout Orientation="Horizontal"
Margin ="5,5,5,5" VerticalOptions="CenterAndExpand" HorizontalOptions="CenterAndExpand" Grid.Row="0">
<Label
FontSize="Micro"
Text="Você está em:"
Style="{StaticResource labelsfont}"
VerticalOptions="CenterAndExpand"
TextColor="White"/>
<Label FontSize="Micro"
Text="loja"
x:Name="prod_lbl_lojaprox"
Style="{StaticResource labelsfont}"
VerticalOptions="CenterAndExpand"
TextColor="{StaticResource laranjacolor}"
LineBreakMode="TailTruncation"
FontAttributes="Bold" />
</StackLayout>
</Grid>
</Grid>
</ContentPage.Content>
我的主要活动：
protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
base.OnCreate(bundle);
global::Xamarin.Forms.Forms.Init(this, bundle);
//inicializa imageCircle
ImageCircleRenderer.Init();
//shared Preferences
App.Init(new AndroidUserPreferences());
//Gerenciador de memória
CachedImageRenderer.Init(true);
var config = new FFImageLoading.Config.Configuration()
{
VerboseLogging = false,
VerbosePerformanceLogging = false,
VerboseMemoryCacheLogging = false,
VerboseLoadingCancelledLogging = false,
FadeAnimationForCachedImages = false,
MaxMemoryCacheSize = 50000000,
FadeAnimationDuration = 500
//Logger = new CustomLogger(),
};
FFImageLoading.ImageService.Instance.Initialize(config);
LoadApplication(new App());
}
public override void OnTrimMemory([GeneratedEnum] TrimMemory level)
{
FFImageLoading.ImageService.Instance.InvalidateMemoryCache();
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
base.OnTrimMemory(level);
}
public override void OnLowMemory()
{
FFImageLoading.ImageService.Instance.InvalidateMemoryCache();
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
base.OnLowMemory();
}
我的图像是base64（png），它们有8kb，它们是150x84像素
其中之一：
数据：图像/ PNG; BASE64，iVBORw0KGgoAAAANSUhEUgAAAJYAAABQCAMAAADMbnx5AAAC / VBMVEUAAAAAAAAAAAAAAAABAQEAAAAEBAQAAAAAAAAAAAAAAAACAgIAAAABAQEAAAAAAAAAAAD9 / P78 + / 36 + vxWVlgrKiv8 + / 3T0tb + / f5zc3X8 + / 39 / f7x8fLIx8r8 + / 3t7O + xsbX8 + / 3a2N6Yl5v9 / F79 / F76 + fzh4eW9vL + 5ub6mpamIiIqOjY / W1NkUFBT29vv5 + FZ7 + / 3 + / f7y8PX08 / X39vn9 + / NW7 / L08 / j49fX7 + PcpMhX18fA6RiExPBckLRA0Px7y6d83RBk8Sxr56bO8LAj35az567stNhr07un67sJDUSIeJg / V6 + 3FNQz89 / HHTCA / SyX78c29ORD27uNHVSrt7PLp49 / z4Kfgl2zs6Obv5djy2o / BVjDo39bz48VMWyj135u / RByxLQnRWyxGVhzo3MoZIAvc2 + Ll1cL48 + / + ko3ndiFItORLOQhHx4rb433a3gDb78 rx2r344YjggELUajz55JbUf1z322V3RyPp6O3Hytrw2p3uv4zy1n / kmVnv49D45aH21lJPYh368tqxppLqsn7diWXKa0zok0NjdimRWRqiNQ7k5OrrxqzyypvosI66lm + HUyz26dHkzrTYw6z76qjux1xcVVTWdEvdcznJYjk9NDVTYyrstCSoaSTfaiJXGAfx067Wj3vyz2VETis0Jyfrvp / ppGruxFB / ajRSXDKyTCSGPhslGRe8s53mz5zZnIuIgHpqZ2XmtEXEl0JIREJhajagVDS2eCXPUx / dWBZxKAujm5vSr4vHeFO0aUiodTqwPxh + cHPktV / uwTYWDg3c1NTNo3mbaFZ4WVWoukDBijSUNA3S09vguZjiw3urpXtxeEbmpiZYbCOQhU70zkC / w9HY0LabgHuhkWKtf1NZZTyZcTmQqCjLxr3gsKzOuqGPio / YrkrXoyyUQi JqVxtqPhW7vcO8ta2clXbLjWlZPTSEmSpygSixs7jM0Iu9wHOol08QFwXGeG87RCjdkx + fo7Hk332 / p1jN0U1VOh8LEQLk4WCAeeGlAAAAL3RSTlMACRAWXzIcIEksJlZPOj9ENgrqtXtvm9 / Oj0qKJ9R56rU57adZGmnfzL + 5OO + GNZIyLVgAABYOSURBVGje7NKxaoNAGMDxvIIR5FARBJPZO + LBiUtGh3BLpgh21iXgO3To1Kl9Ap / A53DK5iT3AoKCQ7d + Zw9a6dYmNAV / 6OBy / VM + Wy0Wi8Vi8Q9p2uq + aK5joZDScI10w / LuI892Iko5pwohBFmeCVzX3vxJomabnhHSnEFOc2qSkBeqDAMyWU8jdDzXvnki5DiGjtYY + 0wuT + rrth0aHnJKKAE + Vr4UIsMx7dUtaO7WQAFW / ICxkPPj5dL1Q133xTHlclzzrnkgRsbWvebkNp6FZj / zd4yxnMb7oe26toWuPink + AjAIi0PVSCiTFRY8QEG0GaZ10jTTAvJ42ZghYDS + JTJHdZv52MB3 / xjXq + 76uVJjKUYR / + zSpFn6Y79uyZPD9Q9nh3PIAuePIrjfXIe6odHDisl0x7hDdIsehblKMbDtyyVhn5e9s5p3Ye6FIdxAA9F + Q8lIVL4T97OsDnkcJxjR2bODtecvdiLU3tp1s7uXpLduzHjiruxGdvy0r2r7eaKocjbNOSluAgR5SVKiCjKX57f2fGy5v253b3UWp / ZPN / fczYSTKi + FU / 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更新：我搜索了这么多......我需要缓存密钥吗？
您是否已将InvalidateMemoryCache实施到MainActivity中？在https://github.com/luberda-molinet/FFImageLoading/wiki/Advanced-Usage#clear-cache-and-memory-considerations了解更多信息
public override void OnTrimMemory([GeneratedEnum] TrimMemory level)
{
FFImageLoading.ImageService.Instance.InvalidateMemoryCache();
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
base.OnTrimMemory(level);
}
public override void OnLowMemory()
{
FFImageLoading.ImageService.Instance.InvalidateMemoryCache();
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
base.OnLowMemory();
}
我想，问题出在你的base64逻辑上，但试试吧。