Merge pull request #6 from JaseElder/master

added check for iPhone 4, to fix transparent view background problem.

Pickers/AbstractActionSheetPicker.m

@@ -27,11 +27,20 @@
 
 #import "AbstractActionSheetPicker.h"
 #import <objc/message.h>
+#import <sys/utsname.h>
 
 BOOL OSAtLeast(NSString* v) {
     return [[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending;
 }
 
+BOOL isIPhone4() {
+    struct utsname systemInfo;
+    uname(&systemInfo);
+
+    NSString *modelName = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
+    return ([modelName rangeOfString:@"iPhone3"].location != NSNotFound);
+}
+
 @interface AbstractActionSheetPicker()
 
 @property (nonatomic, strong) UIBarButtonItem *barButtonItem;
@@ -133,6 +142,9 @@ - (void)notifyTarget:(id)target didCancelWithAction:(SEL)cancelAction origin:(id
 
 - (void)showActionSheetPicker {
     UIView *masterView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.viewSize.width, 260)];    
+    if (isIPhone4()) {
+        masterView.backgroundColor = [UIColor colorWithRed:0.97 green:0.97 blue:0.97 alpha:1.0];
+    }
     self.toolbar = [self createPickerToolbarWithTitle:self.title];
     [masterView addSubview: self.toolbar];