Xamarin mediaPicker.TakePhotoAsync崩潰的應用程序

我有一個使用XLabs的Xamarin.Forms應用程序，它工作正常，但突然它開始崩潰我的應用程序，如果我拍照，或按回從照片畫面按鈕，我周圍的Googling 4個小時，仍然不知道爲什麼會發生，任何想法或想法，請幫助！Xamarin mediaPicker.TakePhotoAsync崩潰的應用程序

這裏是我的代碼行：

private async Task TakePicture() 
    { 
     mediaPicker = Resolver.Resolve<IDevice>().MediaPicker; 

     try 
     { 
      var mediaFile = await mediaPicker.TakePhotoAsync(new CameraMediaStorageOptions 
      { 
       DefaultCamera = CameraDevice.Front, 
       MaxPixelDimension = 1, 
       PercentQuality = 2, 
      }); 

      var image = GetResizedImage(mediaFile.Source, 990, 560); 
      OnImageUpdate(this, image); 
     } 
     catch (Exception ex) 
     { 
      this.status = ex.Message; 
     } 
    }

我的權限是好的：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.CAMERA" />

堆棧跟蹤：

07-02 16:01:20.433 D/Mono (20722): Assembly Ref addref XLabs.Platform.Droid[0x77114be8] -> System[0x7915c498]: 14 
07-02 16:01:20.463 D/Activity(20722): #1 setTransGradationModeColor false 
07-02 16:01:21.118 D/Mono (20722): Assembly Ref addref Xamarin.Forms.Platform.Android[0x7710d050] -> System.Xml[0x77bdfb08]: 6 
07-02 16:01:21.143 D/Mono (20722): Assembly Ref addref System.Runtime.Serialization[0x7b249010] -> System[0x7915c498]: 15 
07-02 16:01:21.223 D/Mono (20722): Assembly Ref addref System.Runtime.Serialization[0x7b249010] -> System.Core[0x77910b48]: 13 
07-02 16:01:21.393 D/AbsListView(20722): onDetachedFromWindow 
07-02 16:01:21.413 D/AbsListView(20722): onDetachedFromWindow 
07-02 16:01:21.978 D/LocationHandler(20722): logged location changed: Location[fused 55.545249,37.561894 acc=10 et=+3d2h50m24s315ms] 
07-02 16:01:26.948 D/LocationHandler(20722): logged location changed: Location[fused 55.545247,37.561896 acc=10 et=+3d2h50m29s329ms] 
07-02 16:01:30.343 D/Activity(20722): #1 setTransGradationModeColor false 
07-02 16:01:30.503 I/dalvikvm-heap(20722): Grow heap (frag case) to 70.455MB for 47775760-byte allocation 
07-02 16:01:30.528 D/dalvikvm(20722): GC_CONCURRENT freed 11651K, 22% free 59395K/75312K, paused 1ms+2ms, total 26ms 
07-02 16:01:30.898 D/dalvikvm(20722): GC_EXPLICIT freed 7037K, 28% free 54531K/75312K, paused 1ms+3ms, total 21ms 
07-02 16:01:30.908 D/Mono (20722): GC_OLD_BRIDGE num-objects 532 num_hash_entries 585 sccs size 580 init 0.00ms df1 1.07ms sort 0.20ms dfs2 0.67ms setup-cb 0.58ms free-data 0.92ms links 66/66/60/2 dfs passes 1183/646 
07-02 16:01:30.908 D/Mono (20722): GC_MAJOR: (LOS overflow) pause 19.10ms, total 19.27ms, bridge 39.09ms major 2240K/2096K los 3281K/17532K 
07-02 16:01:30.943 E/MoreInfoHPW_View(20722): Parent view is not a TextView 
07-02 16:01:30.983 D/ProgressBar(20722): updateDrawableBounds: left = 0 
07-02 16:01:30.983 D/ProgressBar(20722): updateDrawableBounds: top = 0 
07-02 16:01:30.983 D/ProgressBar(20722): updateDrawableBounds: right = -2 
07-02 16:01:30.983 D/ProgressBar(20722): updateDrawableBounds: bottom = -2 
07-02 16:01:30.993 D/ProgressBar(20722): updateDrawableBounds: left = 0 
07-02 16:01:30.993 D/ProgressBar(20722): updateDrawableBounds: top = 0 
07-02 16:01:30.993 D/ProgressBar(20722): updateDrawableBounds: right = -2 
07-02 16:01:30.993 D/ProgressBar(20722): updateDrawableBounds: bottom = -2 
07-02 16:01:31.003 D/Activity(20722): #3 setTransGradationModeColor to false 
07-02 16:01:31.043 D/ProgressBar(20722): updateDrawableBounds: left = 0 
07-02 16:01:31.043 D/ProgressBar(20722): updateDrawableBounds: top = 0 
07-02 16:01:31.043 D/ProgressBar(20722): updateDrawableBounds: right = 96 
07-02 16:01:31.043 D/ProgressBar(20722): updateDrawableBounds: bottom = 96 
07-02 16:01:31.048 W/View (20722): requestLayout() improperly called by md5530bd51e982e6e7b340b73e88efe666e.PageRenderer{42886ae8 V.E...C. ......ID 0,0-720,1134} during layout: running second layout pass 
07-02 16:01:31.048 W/View (20722): requestLayout() improperly called by md5530bd51e982e6e7b340b73e88efe666e.ActivityIndicatorRenderer{4279fa78 V.E..... ......ID 0,0--2,-2} during layout: running second layout pass 
07-02 16:01:31.048 W/View (20722): requestLayout() improperly called by md5530bd51e982e6e7b340b73e88efe666e.RendererFactory_DefaultRenderer{4270c278 V.E...C. ......ID 0,0--2,-2} during layout: running second layout pass 
07-02 16:01:32.003 D/LocationHandler(20722): logged location changed: Location[fused 55.545246,37.561896 acc=10 et=+3d2h50m34s361ms]

所以會發生什麼是我的MasterDetailPage再現，由於構造它稱爲再次調用，但mediapicker來自另一個ContentPage，所以我想它'下降'當前活動，然後重新開始，我仍然不知道爲什麼

來源

2015-07-02 Greag.Deay

你有任何堆棧跟蹤或任何東西？請定義'崩潰'。 –

@GeraldVersluis是的，做的，我想這是不是死機，只是一個活動 –

的重裝，我發現這個問題的其他http://stackoverflow.com/questions/26296889/xamarin-forms-take-photo-with-camera-顯示錯誤的方向和崩潰背上它說了'onActivityCancelled沒有被處理'有幫助嗎？另外，這個stacktrace似乎沒有顯示實際的錯誤，這裏沒有'Exception'？ –

TakePhotoAsync被標記爲已過時（我想是因爲這個崩潰）。您應該使用GetTakePhotoUI。它啓動新的意圖。它在我的應用程序中運行得非常好。

來源

2015-07-03 11:48:30 Grisha

存在xlabs.forms沒有這樣的方法 –

對不起，我錯過了你提到你使用Xlabs ...我使用[Acr.XamForms.Mobile（https://github.com/aritchie/acr-xamarin-forms）。它運作良好。但是，當我今天檢查它時，我注意到它的作者Allan Ritchie最近將這個庫全部標記爲已棄用。他建議轉移到James Montemagno的[Xam.Plugin.Media]（https://www.nuget.org/packages/Xam.Plugin.Media/）包。可能這是你（和我）應該使用的軟件包... – Grisha

Xamarin mediaPicker.TakePhotoAsync崩潰的應用程序

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