Documentation in axml

3 Replies
2 Participants

Created by
PT PT

Platform
Xamarin.Android

Platform
Xamarin.Android

Control
SfDataGrid

Created On
Feb 13, 2017 02:34 PM UTC

Last Activity On
Feb 28, 2017 06:57 PM UTC

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Hi.

I have 2 question:

1. Is there available documentation in xaml? Whole documentation is for code-creating UI, but most of developers use axml file to create UI. Personaly, I dont understand this.

2. Is Syncfusion for Xamarin Android compatible with MVVM pattern (binding etc.) and MVVMCross for Xamarin.Android?

3 Replies

AN Ashok N Syncfusion Team February 14, 2017 01:22 PM UTC

Hi Przemyslaw,

Thanks for contacting Syncfusion support.

SfDatagrid is unavailable on .axml view. In Xamarin.Android everything should be made in Code behind, we have now provided support to create the SfDataGrid view in the .axml file. However for setting properties of the SfDataGrid you have to use the FindViewById<> in the code behind. We have prepared a sample where we have created the SfDataGrid view in the .axml file and have populated the grid with data from code behind.

Sample link: http://www.syncfusion.com/downloads/support/forum/128867/ze/Sample1799091775

From the below UG link you can get the more details about the SfDataGrid and feature list

https://help.syncfusion.com/xamarin-android/sfdatagrid/overview

Regards,

Ashok

PT PT February 27, 2017 12:27 PM UTC

Thanks for answer, this solution satisfied me.

Now, I have got problem:

In my app I have menu with clickable griview and SfDataGrid list of operation. First option in menu is open ZXing fragment scanner. When in fragment scanner i press backbutton, error occurs. In my MenuActivity fires onRestart and onResume and than error.

When I back to MenuActivivty form any other activity everything is ok, error only occurs when Zxing library is on.

Error:

Java.Lang.NullPointerException: Attempt to invoke virtual method 'long android.graphics.Paint.getNativeInstance()' on a null object reference

02-27 12:50:40.748 I/MonoDroid(17129): at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143

02-27 12:50:40.748 I/MonoDroid(17129): at Java.Interop.JniEnvironment+InstanceMethods.CallNonvirtualVoidMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x000a7] in /Users/builder/data/lanes/4009/9578cdcd/source/Java.Interop/src/Java.Interop/Java.Interop/JniEnvironment.g.cs:12083

02-27 12:50:40.748 I/MonoDroid(17129): at Java.Interop.JniPeerMembers+JniInstanceMethods.FinishCreateInstance (System.String constructorSignature, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x00060] in /Users/builder/data/lanes/4009/9578cdcd/source/Java.Interop/src/Java.Interop/Java.Interop/JniPeerMembers.JniInstanceMethods.cs:148

02-27 12:50:40.748 I/MonoDroid(17129): at Android.Graphics.Paint..ctor (Android.Graphics.Paint paint) [0x00078] in /Users/builder/data/lanes/4009/9578cdcd/source/monodroid/src/Mono.Android/platforms/android-24/src/generated/Android.Graphics.Paint.cs:730

02-27 12:50:40.748 I/MonoDroid(17129): at Syncfusion.SfDataGrid.CellElement.CalculateTopAndBottomPadding (Android.Views.GravityFlags alignment, Android.Widget.TextView view, System.String text, System.Int32 height, System.Int32 minimumIndent, System.Int32& topPadding, System.Int32& bottomPadding, Android.Graphics.Paint paintText, Syncfusion.SfDataGrid.LineBreakMode lineBreakMode) [0x0000d] in <9bb698f697c545b396d994d057ae13d9>:0

02-27 12:50:40.749 I/MonoDroid(17129): at Syncfusion.SfDataGrid.GridHeaderCellControl.calculatePaddingForAlignment (Android.Widget.TextView view, System.Int32 width, System.Int32 height) [0x000c3] in <9bb698f697c545b396d994d057ae13d9>:0

02-27 12:50:40.749 I/MonoDroid(17129): at Syncfusion.SfDataGrid.GridHeaderCellControl.OnLayout (System.Boolean changed, System.Int32 left, System.Int32 top, System.Int32 right, System.Int32 bottom) [0x0020d] in <9bb698f697c545b396d994d057ae13d9>:0

02-27 12:50:40.749 I/MonoDroid(17129): at Android.Views.ViewGroup.n_OnLayout_ZIIII (System.IntPtr jnienv, System.IntPtr native__this, System.Boolean changed, System.Int32 l, System.Int32 t, System.Int32 r, System.Int32 b) [0x00009] in /Users/builder/data/lanes/4009/9578cdcd/source/monodroid/src/Mono.Android/platforms/android-24/src/generated/Android.Views.ViewGroup.cs:3427

02-27 12:50:40.749 I/MonoDroid(17129): at (wrapper dynamic-method) System.Object:9e33371e-b4c9-4a8c-900f-d0ea4b3e794f (intptr,intptr,bool,int,int,int,int)

02-27 12:50:40.749 I/MonoDroid(17129): --- End of managed Java.Lang.NullPointerException stack trace ---

02-27 12:50:40.749 I/MonoDroid(17129): java.lang.NullPointerException: Attempt to invoke virtual method 'long android.graphics.Paint.getNativeInstance()' on a null object reference

02-27 12:50:40.749 I/MonoDroid(17129): at android.graphics.Paint.<init>(Paint.java:448)

02-27 12:50:40.749 I/MonoDroid(17129): at md5c91aceb59597f50fed702bd2c746cea3.GridHeaderCellControl.n_onLayout(Native Method)

02-27 12:50:40.749 I/MonoDroid(17129): at md5c91aceb59597f50fed702bd2c746cea3.GridHeaderCellControl.onLayout(GridHeaderCellControl.java:67)