Fixing pixelated thumbs in iOS9

plugin.xml

@@ -5,16 +5,16 @@
   version="1.0.7">
 
 	<name>ImagePicker</name>
-	 
+
 	<description>
 		This plugin allows selection of multiple images from the camera roll / gallery in a phonegap app
 	</description>
-	
+
 	<license>MIT</license>
 
 	<engines>
 		<engine name="cordova" version=">=3.0.0" />
-	</engines>  
+	</engines>
 
 	<js-module src="www/imagepicker.js" name="ImagePicker">
 		<clobbers target="plugins.imagePicker" />

src/ios/ELCImagePicker/ELCAsset.m

@@ -17,33 +17,31 @@ - (id)initWithAsset:(ALAsset*)asset
 	self = [super init];
 	if (self) {
 		self.asset = asset;
-        _selected = NO;
-    }
-	return self;	
+		_selected = NO;
+	}
+	return self;
 }
 
 - (void)toggleSelection
 {
-    self.selected = !self.selected;
+	self.selected = !self.selected;
 }
 
 - (void)setSelected:(BOOL)selected
 {
-    if (selected) {
-        if ([_parent respondsToSelector:@selector(shouldSelectAsset:)]) {
-            if (![_parent shouldSelectAsset:self]) {
-                return;
-            }
-        }
-    }
-    _selected = selected;
-    if (selected) {
-        if (_parent != nil && [_parent respondsToSelector:@selector(assetSelected:)]) {
-            [_parent assetSelected:self];
-        }
-    }
+	if (selected) {
+		if ([_parent respondsToSelector:@selector(shouldSelectAsset:)]) {
+			if (![_parent shouldSelectAsset:self]) {
+				return;
+			}
+		}
+	}
+	_selected = selected;
+	if (selected) {
+		if (_parent != nil && [_parent respondsToSelector:@selector(assetSelected:)]) {
+			[_parent assetSelected:self];
+		}
+	}
 }
 
-
 @end
-

src/ios/ELCImagePicker/ELCAssetCell.m

@@ -44,18 +44,32 @@ - (void)setAssets:(NSArray *)assets
 	}
     for (UIImageView *view in _overlayViewArray) {
         [view removeFromSuperview];
+
 	}
     //set up a pointer here so we don't keep calling [UIImage imageNamed:] if creating overlays
     UIImage *overlayImage = nil;
     for (int i = 0; i < [_rowAssets count]; ++i) {
 
         ELCAsset *asset = [_rowAssets objectAtIndex:i];
 
+        // ALAsset's .thumbnail method's documention specifies that it returns an
+        // image of a size "appropirate for the platform", which makes it potentially
+        // highly unreliable. Indeed, before iOS9 it would return a 125px image, which
+        // was already too small for the 75 square (at double density), but the scaling
+        // artifacts were not that noticeable. As of iOS9, the AL* library is deprecated
+        // in favour of the new Photos library, and the .thumbnails method suddenly started
+        // returning images 75 pixels in width, which is half of what's needed for the
+        // double density 75 square, resulting in seriously pixelated thumbnails.
+        //
+        // Some dude on the internet pointed out that the aspectRatioThumbnail method
+        // still returns reasonably sized thumbs, and indeed they are on the order of 256 pixels.
         if (i < [_imageViewArray count]) {
             UIImageView *imageView = [_imageViewArray objectAtIndex:i];
-            imageView.image = [UIImage imageWithCGImage:asset.asset.thumbnail];
+            imageView.image = [UIImage imageWithCGImage:asset.asset.aspectRatioThumbnail];
         } else {
-            UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageWithCGImage:asset.asset.thumbnail]];
+            UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageWithCGImage:asset.asset.aspectRatioThumbnail]];
+            [imageView setClipsToBounds:true];
+            [imageView setContentMode:UIViewContentModeScaleAspectFill];
             [_imageViewArray addObject:imageView];
         }