Xamarin Forms - adding the calling object as a parameter on a tap gesture recognizer
What is the correct syntax for adding the image in the XAML below as the parameter on the Command?
<ffimageloading:CachedImage Source="{Binding Source}" Aspect="AspectFit" CacheType="Memory" Opacity="2" x:Name="smallImage" >
<Image.GestureRecognizers>
<TapGestureRecognizer
Command="{Binding Path=BindingContext.SetImageCommand, Source={x:Reference this}}"
CommandParameter="{Binding smallImage}" />
</Image.GestureRecognizers>
</ffimageloading:CachedImage>
And the command code it's bound to (CustomCachedImage is just a class derived from a cached image, with an imageName field added)
There will be multiple instances of the calling image as it is in a data template as part of an image slider, so I can't just get the control by name I have to make sure it is the calling control being passed.
public ICommand SetImageCommand
{
get
{
return new Command<CustomCachedImage>((_image) =>
{
string imgName = _image.ImageName;
SetImg(imgName);
});
}
}
xaml xamarin.forms gesture
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
|
show 1 more comment
What is the correct syntax for adding the image in the XAML below as the parameter on the Command?
<ffimageloading:CachedImage Source="{Binding Source}" Aspect="AspectFit" CacheType="Memory" Opacity="2" x:Name="smallImage" >
<Image.GestureRecognizers>
<TapGestureRecognizer
Command="{Binding Path=BindingContext.SetImageCommand, Source={x:Reference this}}"
CommandParameter="{Binding smallImage}" />
</Image.GestureRecognizers>
</ffimageloading:CachedImage>
And the command code it's bound to (CustomCachedImage is just a class derived from a cached image, with an imageName field added)
There will be multiple instances of the calling image as it is in a data template as part of an image slider, so I can't just get the control by name I have to make sure it is the calling control being passed.
public ICommand SetImageCommand
{
get
{
return new Command<CustomCachedImage>((_image) =>
{
string imgName = _image.ImageName;
SetImg(imgName);
});
}
}
xaml xamarin.forms gesture
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
Please show the object that you bind to it
– Gerald Versluis
Nov 12 '18 at 15:20
thanks, post updated
– DarkW1nter
Nov 12 '18 at 15:56
Please post all relevant code :-) What doesSetImgdo and where doessmallImagecome from?
– Gerald Versluis
Nov 12 '18 at 15:57
There is a larger main image, the tap gesture recognizer calls SetImg which set the image to the same source as the smaller image in the slider the user has tapped. Everything else works I just can't seem to pass the tapped image as a parameter to the command.
– DarkW1nter
Nov 12 '18 at 16:00
Should have mentioned, the image sources can be either bundled in the app or held in local storage, hence the custom cahcedImage. If I can pass the image, I can grab the image name and do the rest easily.
– DarkW1nter
Nov 12 '18 at 16:01
|
show 1 more comment
What is the correct syntax for adding the image in the XAML below as the parameter on the Command?
<ffimageloading:CachedImage Source="{Binding Source}" Aspect="AspectFit" CacheType="Memory" Opacity="2" x:Name="smallImage" >
<Image.GestureRecognizers>
<TapGestureRecognizer
Command="{Binding Path=BindingContext.SetImageCommand, Source={x:Reference this}}"
CommandParameter="{Binding smallImage}" />
</Image.GestureRecognizers>
</ffimageloading:CachedImage>
And the command code it's bound to (CustomCachedImage is just a class derived from a cached image, with an imageName field added)
There will be multiple instances of the calling image as it is in a data template as part of an image slider, so I can't just get the control by name I have to make sure it is the calling control being passed.
public ICommand SetImageCommand
{
get
{
return new Command<CustomCachedImage>((_image) =>
{
string imgName = _image.ImageName;
SetImg(imgName);
});
}
}
xaml xamarin.forms gesture
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
What is the correct syntax for adding the image in the XAML below as the parameter on the Command?
<ffimageloading:CachedImage Source="{Binding Source}" Aspect="AspectFit" CacheType="Memory" Opacity="2" x:Name="smallImage" >
<Image.GestureRecognizers>
<TapGestureRecognizer
Command="{Binding Path=BindingContext.SetImageCommand, Source={x:Reference this}}"
CommandParameter="{Binding smallImage}" />
</Image.GestureRecognizers>
</ffimageloading:CachedImage>
And the command code it's bound to (CustomCachedImage is just a class derived from a cached image, with an imageName field added)
There will be multiple instances of the calling image as it is in a data template as part of an image slider, so I can't just get the control by name I have to make sure it is the calling control being passed.
public ICommand SetImageCommand
{
get
{
return new Command<CustomCachedImage>((_image) =>
{
string imgName = _image.ImageName;
SetImg(imgName);
});
}
}
xaml xamarin.forms gesture
xaml xamarin.forms gesture
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
edited Nov 12 '18 at 15:47
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
asked Nov 12 '18 at 15:15
DarkW1nter
1,37043567
1,37043567
Please show the object that you bind to it
– Gerald Versluis
Nov 12 '18 at 15:20
thanks, post updated
– DarkW1nter
Nov 12 '18 at 15:56
Please post all relevant code :-) What doesSetImgdo and where doessmallImagecome from?
– Gerald Versluis
Nov 12 '18 at 15:57
There is a larger main image, the tap gesture recognizer calls SetImg which set the image to the same source as the smaller image in the slider the user has tapped. Everything else works I just can't seem to pass the tapped image as a parameter to the command.
– DarkW1nter
Nov 12 '18 at 16:00
Should have mentioned, the image sources can be either bundled in the app or held in local storage, hence the custom cahcedImage. If I can pass the image, I can grab the image name and do the rest easily.
– DarkW1nter
Nov 12 '18 at 16:01
|
show 1 more comment
Please show the object that you bind to it
– Gerald Versluis
Nov 12 '18 at 15:20
thanks, post updated
– DarkW1nter
Nov 12 '18 at 15:56
Please post all relevant code :-) What doesSetImgdo and where doessmallImagecome from?
– Gerald Versluis
Nov 12 '18 at 15:57
There is a larger main image, the tap gesture recognizer calls SetImg which set the image to the same source as the smaller image in the slider the user has tapped. Everything else works I just can't seem to pass the tapped image as a parameter to the command.
– DarkW1nter
Nov 12 '18 at 16:00
Should have mentioned, the image sources can be either bundled in the app or held in local storage, hence the custom cahcedImage. If I can pass the image, I can grab the image name and do the rest easily.
– DarkW1nter
Nov 12 '18 at 16:01
Please show the object that you bind to it
– Gerald Versluis
Nov 12 '18 at 15:20
Please show the object that you bind to it
– Gerald Versluis
Nov 12 '18 at 15:20
thanks, post updated
– DarkW1nter
Nov 12 '18 at 15:56
thanks, post updated
– DarkW1nter
Nov 12 '18 at 15:56
Please post all relevant code :-) What does
SetImg do and where does smallImage come from?– Gerald Versluis
Nov 12 '18 at 15:57
Please post all relevant code :-) What does
SetImg do and where does smallImage come from?– Gerald Versluis
Nov 12 '18 at 15:57
There is a larger main image, the tap gesture recognizer calls SetImg which set the image to the same source as the smaller image in the slider the user has tapped. Everything else works I just can't seem to pass the tapped image as a parameter to the command.
– DarkW1nter
Nov 12 '18 at 16:00
There is a larger main image, the tap gesture recognizer calls SetImg which set the image to the same source as the smaller image in the slider the user has tapped. Everything else works I just can't seem to pass the tapped image as a parameter to the command.
– DarkW1nter
Nov 12 '18 at 16:00
Should have mentioned, the image sources can be either bundled in the app or held in local storage, hence the custom cahcedImage. If I can pass the image, I can grab the image name and do the rest easily.
– DarkW1nter
Nov 12 '18 at 16:01
Should have mentioned, the image sources can be either bundled in the app or held in local storage, hence the custom cahcedImage. If I can pass the image, I can grab the image name and do the rest easily.
– DarkW1nter
Nov 12 '18 at 16:01
|
show 1 more comment
1 Answer
1
active
oldest
votes
changed "{Binding smallImage}" to "{Binding .}" and I got what I needed
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
add a comment |
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1 Answer
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1 Answer
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oldest
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oldest
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oldest
votes
changed "{Binding smallImage}" to "{Binding .}" and I got what I needed
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
add a comment |
changed "{Binding smallImage}" to "{Binding .}" and I got what I needed
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
add a comment |
changed "{Binding smallImage}" to "{Binding .}" and I got what I needed
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
changed "{Binding smallImage}" to "{Binding .}" and I got what I needed
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
answered Nov 12 '18 at 16:30
DarkW1nter
1,37043567
1,37043567
add a comment |
add a comment |
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Please show the object that you bind to it
– Gerald Versluis
Nov 12 '18 at 15:20
thanks, post updated
– DarkW1nter
Nov 12 '18 at 15:56
Please post all relevant code :-) What does
SetImgdo and where doessmallImagecome from?– Gerald Versluis
Nov 12 '18 at 15:57
There is a larger main image, the tap gesture recognizer calls SetImg which set the image to the same source as the smaller image in the slider the user has tapped. Everything else works I just can't seem to pass the tapped image as a parameter to the command.
– DarkW1nter
Nov 12 '18 at 16:00
Should have mentioned, the image sources can be either bundled in the app or held in local storage, hence the custom cahcedImage. If I can pass the image, I can grab the image name and do the rest easily.
– DarkW1nter
Nov 12 '18 at 16:01