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我更新了Xamarin項目中的Xamarin Forms。現在這個代碼不再工作了。Xamarin 2.3.3.193和ItemTemplate
var view = (View)ItemTemplate.CreateContent();
if (view != null) {
var bindableObject = view as BindableObject;
if (bindableObject != null)
bindableObject.BindingContext = newItem;
_imageStack.Children.Add(view);
}
的問題是(View)ItemTemplate.CreateContent()
進去錯誤:
Message: Can't resolve name on Element
Source: Xamarin.Forms.Xaml
Stack: at Xamarin.Forms.Xaml.ReferenceExtension.ProvideValue (System.IServiceProvider serviceProvider) [0x000b6] in [...]
在調試窗口我可以看到如下的信息
02-20 17:44:04.450 I/art (13331): Starting a blocking GC Explicit
02-20 17:44:04.482 I/art (13331): Explicit concurrent mark sweep GC freed 436(24KB) AllocSpace objects, 0(0B) LOS objects, 21% free, 14MB/18MB, paused 762us total 31.310ms
02-20 17:44:04.482 I/System (13331): FinalizerDaemon: finalize objects = 48
02-20 17:44:04.484 D/Mono (13331): GC_TAR_BRIDGE bridges 20 objects 20 opaque 0 colors 20 colors-bridged 20 colors-visible 20 xref 0 cache-hit 0 cache-semihit 0 cache-miss 0 setup 0.11ms tarjan 0.06ms scc-setup 0.08ms gather-xref 0.00ms xref-setup 0.00ms cleanup 0.30ms
02-20 17:44:04.484 D/Mono (13331): GC_BRIDGE: Complete, was running for 34.10ms
02-20 17:44:04.484 D/Mono (13331): GC_MINOR: (Nursery full) time 4.22ms, stw 4.53ms promoted 32K major size: 3504K in use: 2748K los size: 6404K in use: 5406K
我的功能在內存中保存的圖像從相機ImageSource
格式,byte[]
和length in byte
這張圖片。
謝謝,我知道我必須搜索我的錯誤。 – Enrico