UI Components
Image
UI component for rendering images
<Image>
is a UI component for rendering images. Images can be referenced by URL, resource URL (res://
), base64 string, font resource (font://
), ImageSource, and ImageAsset.
TIP
Working with many images can quickly become a memory hog, for improved image handling it's recommended to use an Image caching library. Here are a few plugins from our community:
<Image src="~/assets/logo.png" height="60" />
Examples
Displaying images from App_Resources
To display images from platform specific locations (App_Resources/Android/drawable-XXX/
, or App_Resources/iOS/
) prefix the source with res://
.
<Image src="res://icon" />
Displaying images from the src/assets directory
By default all assets placed in the src/assets
directory (create the directory if it's not present) will be copied to the correct native platform location to be bundled with the app. To reference these images, prefix them with the ~
character, which is an alias pointing to the src
folder.
<Image src="~/assets/logo.png" />
Displaying images from URLs
Images can be displayed from remote URLs. Depending on the software version of the device, insecure URLs may be blocked (http://
), it's recommended to always use secure URLs (https://
).
<Image
src="https://art.nativescript.org/logo/export/NativeScript_Logo_Blue_White.png"
/>
Displaying base64
-encoded images
Images can be displayed from base64
encoded strings.
<Image src="data:Image/png;base64,iVBORw..." />
Rendering font icons as images
Font symbols can be rendered as an image by prefixing the source with font://
and setting the correct font-family
via eg. a CSS class:
<Image src="font://" class="fas" />
.fas {
font-family: 'Font Awesome';
/* ... */
}
Props
src
src: string | ImageSource | ImageAsset
Gets or sets the source.
A string can be a http://
, https://
, res://
, font://
or an absolute path (eg. ~/assets/image.png
).
See ImageSource
and ImageAsset
.
imageSource
imageSource: ImageSource
Gets or sets the source from an ImageSource
instance.
See ImageSource
.
tintColor
tintColor: Color | string
Sets a color to tint the image.
See Color
.
stretch
stretch: ImageStretchType // "none" | "aspectFill" | "aspectFit" | "fill"
Gets or sets the way the image is resized to fill its allocated space.
See ImageStretchType
loadMode
loadMode: 'sync' | 'async'
Gets or sets the loading strategy for the images.
Default value: async
.
Valid values:
sync
- blocks the UI if necessary to display immediately. Only recommeded for small images like icons.async
- loads in the background, the image may appear with a short delay, good for large images.
Note: When loading images from the web, they are always loaded async
.
...Inherited
For additional inherited properties, refer to the API Reference.
Native component
- Android:
android.widget.ImageView
- iOS:
UIImageView