xamarin.android - How to bind signature byte array on signature pad xamarin forms? -

i have signature pad in xamarin forms app. user sign on signature pad , moves next screen. when user come on signature pad screen, previous signature gets remove signature pad. how can set signature should not delete until user @ current state of app?

i save signature value byte array when user moves next screen. can bind byte array @ signature pad show signature?

regards, anand dubey

since xamarin forms, i'm assuming you're using allan ritchie's acr.xamforms.signaturepad classes.

the signaturepadview class exposes method: loaddrawpoints, allows load signature data view. since method, can't databind it, can add code hosting view load signature:

// note: below assumes // a) you're using mvvm (as should :) ) // b) viewmodel class name myviewmodelclassname (change appropriately) // c) property on vm exposes signature points named signaturepoints (change appropriately)  protected override onappearing() {   loadsignature(); }  protected override onbindingcontextchanged() {   loadsignature(); }  private void loadsignature() {     var vm = this.bindingcontext myviewmodelclassname;     if (vm != null && vm.signaturepoints != null) {       this.signaturepadview.loaddrawpoints(vm.signaturepoints);     } } 

lastly, mention you're saving signature byte array; above code assumes it's array of drawpoint, pair of floats, you'd need reverse whatever conversion you're doing.