Allow changing the background view

NYAlertViewController/NYAlertView.h

@@ -46,10 +46,14 @@ typedef NS_ENUM(NSInteger, NYAlertViewButtonType) {
 @property (nonatomic) CGFloat buttonCornerRadius;
 @property (nonatomic) CGFloat maximumWidth;
 
-@property (nonatomic, readonly) UIView *alertBackgroundView;
+@property (nonatomic, strong) UIView *alertBackgroundView;
 
 @property (nonatomic, readonly) NSLayoutConstraint *backgroundViewVerticalCenteringConstraint;
 
+@property (nonatomic, assign) BOOL flexibleWidth;
+
+- (instancetype)initWithFrame:(CGRect)frame backgroundView:(UIView *)backgroundView;
+
 //@property (nonatomic) NSArray *actions;
 @property (nonatomic) NSArray *actionButtons;
 

NYAlertViewController/NYAlertView.m

@@ -232,16 +232,28 @@ @interface NYAlertView ()
 
 @implementation NYAlertView
 
+
+- (instancetype)initWithFrame:(CGRect)frame backgroundView:(UIView *)backgroundView{
+    self = [super initWithFrame:frame];
+    if (self) {
+        self.alertBackgroundView = backgroundView;
+        self = [self initWithFrame:frame];
+    }
+    return self;
+}
+
 - (instancetype)initWithFrame:(CGRect)frame {
     self = [super initWithFrame:frame];
 
     if (self) {
         self.maximumWidth = 480.0f;
 
-        _alertBackgroundView = [[UIView alloc] initWithFrame:CGRectZero];
+        if (!_alertBackgroundView) {
+            _alertBackgroundView = [[UIView alloc] initWithFrame:CGRectZero];
+            self.alertBackgroundView.backgroundColor = [UIColor colorWithWhite:0.97f alpha:1.0f];
+            self.alertBackgroundView.layer.cornerRadius = 6.0f;
+        }
         [self.alertBackgroundView setTranslatesAutoresizingMaskIntoConstraints:NO];
-        self.alertBackgroundView.backgroundColor = [UIColor colorWithWhite:0.97f alpha:1.0f];
-        self.alertBackgroundView.layer.cornerRadius = 6.0f;
         [self addSubview:_alertBackgroundView];
 
         _titleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
@@ -288,23 +300,25 @@ - (instancetype)initWithFrame:(CGRect)frame {
                                                         multiplier:1.0f
                                                           constant:0.0f]];
 
-        CGFloat alertBackgroundViewWidth = MIN(CGRectGetWidth([UIApplication sharedApplication].keyWindow.bounds),
-                                               CGRectGetHeight([UIApplication sharedApplication].keyWindow.bounds)) * 0.8f;
-
-        if (alertBackgroundViewWidth > self.maximumWidth) {
-            alertBackgroundViewWidth = self.maximumWidth;
+        if (self.flexibleWidth) {
+            CGFloat alertBackgroundViewWidth = MIN(CGRectGetWidth([UIApplication sharedApplication].keyWindow.bounds),
+                                                   CGRectGetHeight([UIApplication sharedApplication].keyWindow.bounds)) * 0.8f;
+
+            if (alertBackgroundViewWidth > self.maximumWidth) {
+                alertBackgroundViewWidth = self.maximumWidth;
+            }
+
+            _alertBackgroundWidthConstraint = [NSLayoutConstraint constraintWithItem:self.alertBackgroundView
+                                                                           attribute:NSLayoutAttributeWidth
+                                                                           relatedBy:NSLayoutRelationEqual
+                                                                              toItem:nil
+                                                                           attribute:NSLayoutAttributeNotAnAttribute
+                                                                          multiplier:0.0f
+                                                                            constant:alertBackgroundViewWidth];
+
+            [self addConstraint:self.alertBackgroundWidthConstraint];
         }
 
-        _alertBackgroundWidthConstraint = [NSLayoutConstraint constraintWithItem:self.alertBackgroundView
-                                                                       attribute:NSLayoutAttributeWidth
-                                                                       relatedBy:NSLayoutRelationEqual
-                                                                          toItem:nil
-                                                                       attribute:NSLayoutAttributeNotAnAttribute
-                                                                      multiplier:0.0f
-                                                                        constant:alertBackgroundViewWidth];
-
-        [self addConstraint:self.alertBackgroundWidthConstraint];
-
         _backgroundViewVerticalCenteringConstraint = [NSLayoutConstraint constraintWithItem:self.alertBackgroundView
                                                                                   attribute:NSLayoutAttributeCenterY
                                                                                   relatedBy:NSLayoutRelationEqual

NYAlertViewController/NYAlertViewController.h

@@ -6,6 +6,7 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "NYAlertView.h"
 
 @interface NYAlertAction : NSObject
 
@@ -34,6 +35,16 @@ typedef NS_ENUM(NSInteger, NYAlertViewControllerTransitionStyle) {
  */
 + (instancetype)alertControllerWithTitle:(NSString *)title message:(NSString *)message;
 
+/**
+ Creates an alert view controller with the specified backgroundView
+ */
+- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil backgroundView:(UIView *)backgroundView;
+
+/**
+ Creates an alert view controller with the specified title ,message, and backgroundView
+ */
++ (instancetype)alertControllerWithTitle:(NSString *)title message:(NSString *)message backgroundView:(UIView *)backgroundView;
+
 /**
  The message displayed under the alert view's title
  */
@@ -187,6 +198,11 @@ typedef NS_ENUM(NSInteger, NYAlertViewControllerTransitionStyle) {
  */
 @property (nonatomic, readonly) NSArray *textFields;
 
+/**
+ An instance of NYAlertView to represent the view of this controller
+ */
+@property (nonatomic, strong) NYAlertView *view;
+
 /**
  Add an alert action object to be displayed in the alert view
 

NYAlertViewController/NYAlertViewController.m

@@ -7,8 +7,6 @@
 
 #import "NYAlertViewController.h"
 
-#import "NYAlertView.h"
-
 @interface NYAlertAction ()
 
 @property (weak, nonatomic) UIButton *actionButton;
@@ -299,7 +297,6 @@ - (void)tapGestureRecognized:(UITapGestureRecognizer *)gestureRecognizer {
 
 @interface NYAlertViewController () <UIGestureRecognizerDelegate, UIViewControllerTransitioningDelegate>
 
-@property NYAlertView *view;
 @property UIPanGestureRecognizer *panGestureRecognizer;
 @property (nonatomic, strong) id<UIViewControllerTransitioningDelegate> transitioningDelegate;
 
@@ -319,6 +316,14 @@ + (instancetype)alertControllerWithTitle:(NSString *)title message:(NSString *)m
     return alertController;
 }
 
++ (instancetype)alertControllerWithTitle:(NSString *)title message:(NSString *)message backgroundView:(UIView *)backgroundView{
+    NYAlertViewController *alertController = [[NYAlertViewController alloc] initWithNibName:nil bundle:nil backgroundView:backgroundView];
+    alertController.title = title;
+    alertController.message = message;
+
+    return alertController;
+}
+
 - (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
 
@@ -329,6 +334,17 @@ - (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibB
     return self;
 }
 
+- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil backgroundView:(UIView *)backgroundView{
+    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
+
+    if (self) {
+        self.view = [[NYAlertView alloc] initWithFrame:backgroundView.frame backgroundView:backgroundView];
+        [self commonInit];
+    }
+
+    return self;
+}
+
 - (instancetype)initWithCoder:(NSCoder *)aDecoder {
     self = [super initWithCoder:aDecoder];
 
@@ -467,6 +483,7 @@ - (void)viewWillAppear:(BOOL)animated {
 }
 
 - (void)setAlertViewBackgroundColor:(UIColor *)alertViewBackgroundColor {
+
     _alertViewBackgroundColor = alertViewBackgroundColor;
 
     self.view.alertBackgroundView.backgroundColor = alertViewBackgroundColor;

NYAlertViewControllerDemo/NYAlertViewDemo/DemoViewController.m

@@ -59,13 +59,16 @@ - (void)showStandardAlertView {
                                                           [self dismissViewControllerAnimated:YES completion:nil];
                                                       }]];
 
+    alertController.view = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"small-napkin"]];
+
     [self presentViewController:alertController animated:YES completion:nil];
 }
 
 - (void)showCustomAlertViewWithActionCount:(NSInteger)actionCount {
-    NYAlertViewController *alertViewController = [[NYAlertViewController alloc] initWithNibName:nil bundle:nil];
+    NYAlertViewController *alertViewController = [[NYAlertViewController alloc] initWithNibName:nil bundle:nil backgroundView:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"small-napkin"]]];
+    alertViewController.view.flexibleWidth = NO;
     alertViewController.title = NSLocalizedString(@"Example Title", nil);
-    alertViewController.message = NSLocalizedString(@"This alert uses the fade transition style! Integer posuere erat a ante venenatis dapibus posuere velit aliquet. Donec id elit non mi porta gravida at eget metus.", nil);
+    alertViewController.message = NSLocalizedString(@"This alert uses the fade transition style!", nil);
 
     alertViewController.view.tintColor = self.view.tintColor;
     alertViewController.backgroundTapDismissalGestureEnabled = YES;

NYAlertViewControllerDemo/NYAlertViewDemo/Images.xcassets/AppIcon.appiconset/Contents.json

@@ -59,6 +59,11 @@
       "idiom" : "ipad",
       "size" : "76x76",
       "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
     }
   ],
   "info" : {

NYAlertViewControllerDemo/NYAlertViewDemo/Images.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

NYAlertViewControllerDemo/NYAlertViewDemo/Images.xcassets/small-napkin.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "small-napkin.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "[email protected]",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}