Added generic view compatibility

Author: andreamazz

AMScrollingNavbar/AMScrollingNavbarViewController.h

@@ -10,6 +10,6 @@
 
 @interface AMScrollingNavbarViewController : UIViewController
 
-- (void)followScrollView:(UIScrollView*)scrollView;
+- (void)followScrollView:(UIView*)scrollView;
 
 @end

AMScrollingNavbar/AMScrollingNavbarViewController.m

@@ -10,7 +10,7 @@
 
 @interface AMScrollingNavbarViewController () <UIGestureRecognizerDelegate>
 
-@property (nonatomic, weak) UIScrollView* scrollView;
+@property (nonatomic, weak) UIView* scrollableView;
 @property (assign, nonatomic) float lastContentOffset;
 @property (strong, nonatomic) UIPanGestureRecognizer* panGesture;
 @property (strong, nonatomic) UIView* overlay;
@@ -21,18 +21,16 @@ @interface AMScrollingNavbarViewController () <UIGestureRecognizerDelegate>
 
 @implementation AMScrollingNavbarViewController
 
-- (void)followScrollView:(UIScrollView*)scrollView
+- (void)followScrollView:(UIView*)scrollView
 {
-	self.scrollView = scrollView;
+	self.scrollableView = scrollView;
 
 	self.panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];
 	[self.panGesture setMaximumNumberOfTouches:1];
 
 	[self.panGesture setDelegate:self];
-	[self.scrollView addGestureRecognizer:self.panGesture];
-	
-	[self.navigationController.navigationBar setTranslucent:NO];
-	
+	[self.scrollableView addGestureRecognizer:self.panGesture];
+
 	CGRect frame = self.navigationController.navigationBar.frame;
 	frame.origin = CGPointZero;
 	self.overlay = [[UIView alloc] initWithFrame:frame];
@@ -52,7 +50,7 @@ - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecogni
 
 - (void)handlePan:(UIPanGestureRecognizer*)gesture
 {
-	CGPoint translation = [gesture translationInView:[self.scrollView superview]];
+	CGPoint translation = [gesture translationInView:[self.scrollableView superview]];
 
 	float delta = self.lastContentOffset - translation.y;
 	self.lastContentOffset = translation.y;
@@ -81,7 +79,9 @@ - (void)handlePan:(UIPanGestureRecognizer*)gesture
 		[self updateSizingWithDelta:delta];
 
 		// Keeps the view's scroll position steady until the navbar is gone
-		[self.scrollView setContentOffset:CGPointMake(self.scrollView.contentOffset.x, self.scrollView.contentOffset.y - delta)];
+		if ([self.scrollableView isKindOfClass:[UIScrollView class]]) {
+			[(UIScrollView*)self.scrollableView setContentOffset:CGPointMake(((UIScrollView*)self.scrollableView).contentOffset.x, ((UIScrollView*)self.scrollableView).contentOffset.y - delta)];
+		}
 	}
 
 	if (delta < 0) {
@@ -156,15 +156,17 @@ - (void)updateSizingWithDelta:(CGFloat)delta
 
 	float alpha = (frame.origin.y + 24) / frame.size.height;
 	[self.overlay setAlpha:1 - alpha];
-
-	frame = self.scrollView.superview.frame;
+	self.navigationController.navigationBar.tintColor = [self.navigationController.navigationBar.tintColor colorWithAlphaComponent:alpha];
+	
+	frame = self.scrollableView.superview.frame;
 	frame.origin.y = self.navigationController.navigationBar.frame.origin.y + self.navigationController.navigationBar.frame.size.height;
 	frame.size.height = frame.size.height + delta;
-	self.scrollView.superview.frame = frame;
+	self.scrollableView.superview.frame = frame;
 
-	frame = self.scrollView.frame;
+	// Changing the layer's frame avoids UIWebView's glitchiness
+	frame = self.scrollableView.layer.frame;
 	frame.size.height += delta;
-	self.scrollView.frame = frame;
+	self.scrollableView.layer.frame = frame;
 }
 
 

README.md

@@ -33,18 +33,26 @@ To enable the scrolling effect you simply need to call followScrollView: providi
 [self followScrollView:self.scrollView];
 ```
 
-Make sure to have a barTintColor for your UINavigationBar, or you won't see the fade-in and fade-out effects.
+Make sure to have a ```barTintColor``` for your ```UINavigationBar```, or you won't see the fade-in and fade-out effects.
+Also make sure that you are not using a translucent navigation bar. E.g., in your controller:
+```objc
+[self.navigationController.navigationBar setTranslucent:NO];
+```
 
 Changelog 
 ==================
 
+0.2
+--------------------
+- Added support for generic UIViews
+
 0.1
 --------------------
 - Initial Version.
 
 TODO
 --------------------
-* Check compatibility with UITableView and other scroll view based components.
+* Needs testing
 
 MIT License
 --------------------

ScrollingNavbarDemo/ScrollingNavbarDemo.xcodeproj/project.pbxproj

@@ -22,6 +22,9 @@
 		652B4499182D376600D01F5C /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = 652B4497182D376600D01F5C /* InfoPlist.strings */; };
 		652B449B182D376600D01F5C /* ScrollingNavbarDemoTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 652B449A182D376600D01F5C /* ScrollingNavbarDemoTests.m */; };
 		652B44AA182D48DE00D01F5C /* AMScrollingNavbarViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 652B44A9182D48DE00D01F5C /* AMScrollingNavbarViewController.m */; };
+		65BF9E69182E5AB70092BF7F /* AMScrollViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 65BF9E68182E5AB70092BF7F /* AMScrollViewController.m */; };
+		65BF9E6C182E5AC70092BF7F /* AMWebViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 65BF9E6B182E5AC70092BF7F /* AMWebViewController.m */; };
+		65BF9E6F182E5AD40092BF7F /* AMTableViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 65BF9E6E182E5AD40092BF7F /* AMTableViewController.m */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -56,6 +59,12 @@
 		652B449A182D376600D01F5C /* ScrollingNavbarDemoTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ScrollingNavbarDemoTests.m; sourceTree = "<group>"; };
 		652B44A8182D48DE00D01F5C /* AMScrollingNavbarViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AMScrollingNavbarViewController.h; sourceTree = "<group>"; };
 		652B44A9182D48DE00D01F5C /* AMScrollingNavbarViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AMScrollingNavbarViewController.m; sourceTree = "<group>"; };
+		65BF9E67182E5AB70092BF7F /* AMScrollViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AMScrollViewController.h; sourceTree = "<group>"; };
+		65BF9E68182E5AB70092BF7F /* AMScrollViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AMScrollViewController.m; sourceTree = "<group>"; };
+		65BF9E6A182E5AC70092BF7F /* AMWebViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AMWebViewController.h; sourceTree = "<group>"; };
+		65BF9E6B182E5AC70092BF7F /* AMWebViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AMWebViewController.m; sourceTree = "<group>"; };
+		65BF9E6D182E5AD40092BF7F /* AMTableViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AMTableViewController.h; sourceTree = "<group>"; };
+		65BF9E6E182E5AD40092BF7F /* AMTableViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AMTableViewController.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -119,8 +128,7 @@
 				652B447E182D376600D01F5C /* AMAppDelegate.h */,
 				652B447F182D376600D01F5C /* AMAppDelegate.m */,
 				652B4481182D376600D01F5C /* Main.storyboard */,
-				652B4484182D376600D01F5C /* AMViewController.h */,
-				652B4485182D376600D01F5C /* AMViewController.m */,
+				65BF9E66182E5A9C0092BF7F /* ViewControllers */,
 				652B4487182D376600D01F5C /* Images.xcassets */,
 				652B4476182D376600D01F5C /* Supporting Files */,
 			);
@@ -166,6 +174,21 @@
 			path = ../../AMScrollingNavbar;
 			sourceTree = "<group>";
 		};
+		65BF9E66182E5A9C0092BF7F /* ViewControllers */ = {
+			isa = PBXGroup;
+			children = (
+				652B4484182D376600D01F5C /* AMViewController.h */,
+				652B4485182D376600D01F5C /* AMViewController.m */,
+				65BF9E67182E5AB70092BF7F /* AMScrollViewController.h */,
+				65BF9E68182E5AB70092BF7F /* AMScrollViewController.m */,
+				65BF9E6A182E5AC70092BF7F /* AMWebViewController.h */,
+				65BF9E6B182E5AC70092BF7F /* AMWebViewController.m */,
+				65BF9E6D182E5AD40092BF7F /* AMTableViewController.h */,
+				65BF9E6E182E5AD40092BF7F /* AMTableViewController.m */,
+			);
+			name = ViewControllers;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -264,8 +287,11 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				65BF9E6F182E5AD40092BF7F /* AMTableViewController.m in Sources */,
 				652B4480182D376600D01F5C /* AMAppDelegate.m in Sources */,
+				65BF9E6C182E5AC70092BF7F /* AMWebViewController.m in Sources */,
 				652B44AA182D48DE00D01F5C /* AMScrollingNavbarViewController.m in Sources */,
+				65BF9E69182E5AB70092BF7F /* AMScrollViewController.m in Sources */,
 				652B4486182D376600D01F5C /* AMViewController.m in Sources */,
 				652B447C182D376600D01F5C /* main.m in Sources */,
 			);

ScrollingNavbarDemo/ScrollingNavbarDemo/AMAppDelegate.m

@@ -12,7 +12,6 @@ @implementation AMAppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
-    // Override point for customization after application launch.
     return YES;
 }
 

ScrollingNavbarDemo/ScrollingNavbarDemo/AMScrollViewController.h

@@ -0,0 +1,14 @@
+//
+//  AMScrollViewController.h
+//  ScrollingNavbarDemo
+//
+//  Created by Andrea Mazzini on 09/11/13.
+//  Copyright (c) 2013 Andrea Mazzini. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "AMScrollingNavbarViewController.h"
+
+@interface AMScrollViewController : AMScrollingNavbarViewController
+
+@end

ScrollingNavbarDemo/ScrollingNavbarDemo/AMScrollViewController.m

@@ -0,0 +1,45 @@
+//
+//  AMScrollViewController.m
+//  ScrollingNavbarDemo
+//
+//  Created by Andrea Mazzini on 09/11/13.
+//  Copyright (c) 2013 Andrea Mazzini. All rights reserved.
+//
+
+#import "AMScrollViewController.h"
+
+@interface AMScrollViewController ()
+
+@property (weak, nonatomic) IBOutlet UIScrollView *scrollView;
+
+@end
+
+@implementation AMScrollViewController
+
+- (void)viewDidLoad
+{
+	[super viewDidLoad];
+	
+	[self setTitle:@"Scroll View"];
+	
+	UILabel* label = [[UILabel alloc] initWithFrame:CGRectMake(0, 60, 320, 40)];
+	[label setText:@"My content"];
+	[label setTextAlignment:NSTextAlignmentCenter];
+	[label setTextColor:[UIColor whiteColor]];
+	[self.scrollView addSubview:label];
+	[self.view setBackgroundColor:[UIColor colorWithRed:80.0/255.0 green:110.0/255.0 blue:130.0/255.0 alpha:1]];
+	[self.scrollView setBackgroundColor:[UIColor colorWithRed:80.0/255.0 green:110.0/255.0 blue:130.0/255.0 alpha:1]];
+	
+	// Let's fake some content
+	[self.scrollView setContentSize:CGSizeMake(320, 840)];
+	
+	// Set the barTintColor. This will determine the overlay that fades in and out upon scrolling.
+	[self.navigationController.navigationBar setBarTintColor:[UIColor orangeColor]];
+	
+	[self.navigationController.navigationBar setTintColor:[UIColor blackColor]];
+	
+	// Just call this line to enable the scrolling navbar
+	[self followScrollView:self.scrollView];
+}
+
+@end

ScrollingNavbarDemo/ScrollingNavbarDemo/AMTableViewController.h

@@ -0,0 +1,14 @@
+//
+//  AMTableViewController.h
+//  ScrollingNavbarDemo
+//
+//  Created by Andrea Mazzini on 09/11/13.
+//  Copyright (c) 2013 Andrea Mazzini. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "AMScrollingNavbarViewController.h"
+
+@interface AMTableViewController : AMScrollingNavbarViewController
+
+@end

ScrollingNavbarDemo/ScrollingNavbarDemo/AMTableViewController.m

@@ -0,0 +1,54 @@
+//
+//  AMTableViewController.m
+//  ScrollingNavbarDemo
+//
+//  Created by Andrea Mazzini on 09/11/13.
+//  Copyright (c) 2013 Andrea Mazzini. All rights reserved.
+//
+
+#import "AMTableViewController.h"
+
+@interface AMTableViewController () <UITableViewDataSource, UITableViewDelegate>
+
+@property (weak, nonatomic) IBOutlet UITableView *tableView;
+
+@end
+
+@implementation AMTableViewController
+
+- (void)viewDidLoad
+{
+	[super viewDidLoad];
+	
+	[self setTitle:@"Table View"];
+	
+	[self.tableView setDelegate:self];
+	[self.tableView setDataSource:self];
+		
+	// Set the barTintColor. This will determine the overlay that fades in and out upon scrolling.
+	[self.navigationController.navigationBar setBarTintColor:[UIColor colorWithRed:60.0/255.0 green:1 blue:150.0/255.0 alpha:1]];
+	
+	[self.navigationController.navigationBar setTintColor:[UIColor blackColor]];
+	
+	// Just call this line to enable the scrolling navbar
+	[self followScrollView:self.tableView];
+}
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
+{
+	return 20;
+}
+
+- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+	UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:@"Identifier"];
+	if (!cell) {
+		cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"Identifier"];
+	}
+	
+	cell.textLabel.text = @[@"Awesome content", @"Great content", @"Amazing content", @"Ludicrous content"][arc4random()%4];
+	
+	return cell;
+}
+
+@end

ScrollingNavbarDemo/ScrollingNavbarDemo/AMViewController.h

@@ -7,8 +7,7 @@
 //
 
 #import <UIKit/UIKit.h>
-#import "AMScrollingNavbarViewController.h"
 
-@interface AMViewController : AMScrollingNavbarViewController
+@interface AMViewController : UIViewController
 
 @end