1 files changed, 58 insertions, 0 deletions
diff --git a/platform/ios/demo/Examples/ObjectiveC/SourceCustomRasterExample.m b/platform/ios/demo/Examples/ObjectiveC/SourceCustomRasterExample.m
new file mode 100644
index 0000000000..b17bac3282
--- /dev/null
+++ b/platform/ios/demo/Examples/ObjectiveC/SourceCustomRasterExample.m
@@ -0,0 +1,58 @@
+#import "SourceCustomRasterExample.h"
+@import Mapbox;
+
+NSString *const MBXExampleSourceCustomRaster = @"SourceCustomRasterExample";
+
+@interface SourceCustomRasterExample () <MGLMapViewDelegate>
+@property (nonatomic) MGLRasterStyleLayer *rasterLayer;
+@end
+
+@implementation SourceCustomRasterExample
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+
+    MGLMapView *mapView = [[MGLMapView alloc] initWithFrame:self.view.bounds];
+    mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+
+    [mapView setCenterCoordinate:CLLocationCoordinate2DMake(45.5188, -122.6748)
+		       zoomLevel:13
+			animated:NO];
+
+    mapView.delegate = self;
+
+    [self.view addSubview:mapView];
+
+    // Add a UISlider that will control the raster layer’s opacity.
+    [self addSlider];
+}
+
+- (void)mapView:(MGLMapView *)mapView didFinishLoadingStyle:(MGLStyle *)style {
+    // Add a new raster source and layer.
+    MGLRasterSource *source = [[MGLRasterSource alloc] initWithIdentifier:@"stamen-watercolor"
+        tileURLTemplates:@[@"https://stamen-tiles.a.ssl.fastly.net/watercolor/{z}/{x}/{y}.jpg"]
+        options:@{ MGLTileSourceOptionTileSize: @256}];
+    MGLRasterStyleLayer *rasterLayer = [[MGLRasterStyleLayer alloc] initWithIdentifier:@"stamen-watercolor" source:source];
+
+    [mapView.style addSource:source];
+    [mapView.style addLayer:rasterLayer];
+
+    self.rasterLayer = rasterLayer;
+}
+
+- (void)updateLayerOpacity:(UISlider *)sender {
+    [self.rasterLayer setRasterOpacity:[MGLStyleValue valueWithRawValue:@(sender.value)]];
+}
+
+- (void)addSlider {
+    CGFloat padding = 10.0;
+    UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(padding, self.view.frame.size.height - 44 - 30, self.view.frame.size.width - padding * 2, 44)];
+    slider.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
+    slider.minimumValue = 0;
+    slider.maximumValue = 1;
+    slider.value = 1;
+    [slider addTarget:self action:@selector(updateLayerOpacity:) forControlEvents:UIControlEventValueChanged];
+    [self.view addSubview:slider];
+}
+
+@end