From 4aa3683c10877132beb71270e5111d522f893f27 Mon Sep 17 00:00:00 2001
From: Tatsuya Tanaka <tatsuyars@yahoo.co.jp>
Date: Wed, 12 Aug 2015 02:21:21 +0900
Subject: [PATCH] Add ability to change background color of buttons

---
 SIAlertView/SIAlertView.h |  3 +++
 SIAlertView/SIAlertView.m | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/SIAlertView/SIAlertView.h b/SIAlertView/SIAlertView.h
index e4d620a..cb900b4 100644
--- a/SIAlertView/SIAlertView.h
+++ b/SIAlertView/SIAlertView.h
@@ -67,6 +67,9 @@ typedef void(^SIAlertViewHandler)(SIAlertView *alertView);
 @property (nonatomic, strong) UIColor *buttonColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
 @property (nonatomic, strong) UIColor *cancelButtonColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
 @property (nonatomic, strong) UIColor *destructiveButtonColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
+@property (nonatomic, strong) UIColor *buttonBackgroundColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
+@property (nonatomic, strong) UIColor *cancelButtonBackgroundColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
+@property (nonatomic, strong) UIColor *destructiveButtonBackgroundColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
 @property (nonatomic, assign) CGFloat cornerRadius NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR; // default is 2.0
 @property (nonatomic, assign) CGFloat shadowRadius NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR; // default is 8.0
 
diff --git a/SIAlertView/SIAlertView.m b/SIAlertView/SIAlertView.m
index 7a67df3..8b32f75 100644
--- a/SIAlertView/SIAlertView.m
+++ b/SIAlertView/SIAlertView.m
@@ -1135,6 +1135,32 @@ - (void)setDestructiveButtonColor:(UIColor *)buttonColor
     [self setColor:buttonColor toButtonsOfType:SIAlertViewButtonTypeDestructive];
 }
 
+- (void)setButtonBackgroundColor:(UIColor *)backgroundColor
+{
+    if (_buttonBackgroundColor == backgroundColor) {
+        return;
+    }
+    _buttonBackgroundColor = backgroundColor;
+    [self setBackgroundColor:backgroundColor toButtonsOfType:SIAlertViewButtonTypeDefault];
+}
+
+- (void)setCancelButtonBackgroundColor:(UIColor *)backgroundColor
+{
+    if (_cancelButtonBackgroundColor == backgroundColor) {
+        return;
+    }
+    _cancelButtonBackgroundColor = backgroundColor;
+    [self setBackgroundColor:backgroundColor toButtonsOfType:SIAlertViewButtonTypeCancel];
+}
+
+- (void)setDestructiveButtonBackgroundColor:(UIColor *)backgroundColor
+{
+    if (_destructiveButtonBackgroundColor == backgroundColor) {
+        return;
+    }
+    _destructiveButtonBackgroundColor = backgroundColor;
+    [self setBackgroundColor:backgroundColor toButtonsOfType:SIAlertViewButtonTypeDestructive];
+}
 
 - (void)setDefaultButtonImage:(UIImage *)defaultButtonImage forState:(UIControlState)state
 {
@@ -1179,6 +1205,16 @@ -(void)setColor:(UIColor *)color toButtonsOfType:(SIAlertViewButtonType)type {
     }
 }
 
+-(void)setBackgroundColor:(UIColor *)color toButtonsOfType:(SIAlertViewButtonType)type {
+    for (NSUInteger i = 0; i < self.items.count; i++) {
+        SIAlertItem *item = self.items[i];
+        if(item.type == type) {
+            UIButton *button = self.buttons[i];
+            button.backgroundColor = color;
+        }
+    }
+}
+
 # pragma mark -
 # pragma mark Enable parallax effect (iOS7 only)