Xamarin mediaPicker.TakePhotoAsync crashes app

Question

I have an Xamarin.Forms app that uses XLabs, it was working fine, but suddenly it started to crash my app, if I take photo or press back button from photo screen, I was googling around for 4 hours and still have no idea why it happening, any ideas or thoughts, please help!

here is my lines of code:

    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;
        }
    }

my permission are alright:

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

stacktrace:

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]

so what happens is my MasterDetailPage recreates, because constructor of it called is calling again, but mediapicker is from another ContentPage, so I guess it 'drops' current activity and starts over, I still don't know why

Do you have any stacktrace or anything? Please define 'crash'. — Gerald Versluis, Jul 02 '15 at 08:09
@GeraldVersluis yep, done, I guess it is not a crash, just a reload of activity — animekun, Jul 02 '15 at 09:27
I found this other question http://stackoverflow.com/questions/26296889/xamarin-forms-take-photo-with-camera-shows-wrong-orientation-and-crashes-on-back it says something about the 'onActivityCancelled not being handled' does that help? Also, this stacktrace doesn't seem to show the actual error, there is no `Exception` in here? — Gerald Versluis, Jul 02 '15 at 09:37
That can't be right, there *must* be an exception, else your app won't quit just like that. Could you check if you can get the output on a more detailed level in Visual Studio or Xamarin Studio? — Gerald Versluis, Jul 02 '15 at 09:47
@GeraldVersluis I have tried a lot to catch an exception, but seems there is really no exceptions, something just drops activity, I have updated a log, all lines happens since I press "Make a photo" and until I click "OK" after making a photo, there is also a jump in memory at line 07-02 16:01:30.898, may be this made an activity to drop? — animekun, Jul 02 '15 at 13:21

score 2 · Answer 1 · answered Jul 03 '15 at 11:48

2

TakePhotoAsync is marked obsolete (I think because of this crash). You should use GetTakePhotoUI. It starts new Intent. It works very well in my app.

answered Jul 03 '15 at 11:48

Grisha

713
5
13

there is no such method in xlabs.forms – animekun Jul 06 '15 at 20:17
1

Sorry, I missed that you mentioned you use Xlabs... I use [Acr.XamForms.Mobile](https://github.com/aritchie/acr-xamarin-forms). It works well. But when I've checked it today, I noticed that its author, Allan Ritchie, recently marked all this library as deprecated. He recommends to move to James Montemagno's [Xam.Plugin.Media](https://www.nuget.org/packages/Xam.Plugin.Media/) package. Probably that's the package that you (and me) should use... – Grisha Jul 07 '15 at 09:02

Xamarin mediaPicker.TakePhotoAsync crashes app

1 Answers1