自定义UISearchBar(粗略,慢慢补全)
2017-01-09 本文已影响0人
wToFly
_searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, (self.navigationController.navigationBar.height - 44) / 2.0, 360, 44)];
[_searchBar setBackgroundImage:[UIImage getImageWithColor:[UIColor clearColor] size:_searchBar.size]];
[_searchBar setSearchBarStyle:UISearchBarStyleProminent];
_searchBar.placeholder = @"搜索商品名称/编号/关键字";
_searchBar.delegate = self;
_searchBarTF = [_searchBar valueForKey:@"_searchField"];
UIImageView *topImageView = [_searchBarTF valueForKey:@"_effectBackgroundTop"];// 获取searchBar 有颜色的imageView 可取值(//_effectBackgroundBottom、_effectBackgroundTop、_systemBackgroundView)
topImageView.image = [UIImage getImageWithColor:[UIColor colorWithHexString:@"DEE0E2"] size:CGSizeMake(1, 1)];
_searchBarTF.layer.borderWidth = 1;
_searchBarTF.layer.borderColor = kC7C7C7.CGColor;
_searchBarTF.layer.cornerRadius = 5;
_searchBar.tintColor = k009D77;
_searchBarTF.clipsToBounds = YES;
当UISearchBar为空时也能点击搜索按钮
- (BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
// 不管什么时候都能点击搜索
UITextField *searchBarTF = [searchBar valueForKey:@"_searchField"];
searchBarTF.enablesReturnKeyAutomatically = NO;
return YES;
}
附:kC7C7C7、k009D77 为颜色
+ (UIImage *)getImageWithColor:(UIColor *)color size:(CGSize)size {
CGRect rect = CGRectMake(0, 0, size.width, size.height);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
+ (UIColor *)colorWithHexString:(NSString *)color {
NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
// String should be 6 or 8 characters
if ([cString length] < 6) {
return [UIColor clearColor];
}
// strip 0X if it appears
if ([cString hasPrefix:@"0X"])
cString = [cString substringFromIndex:2];
if ([cString hasPrefix:@"#"])
cString = [cString substringFromIndex:1];
if ([cString length] != 6)
return [UIColor clearColor];
// Separate into r, g, b substrings
NSRange range;
range.location = 0;
range.length = 2;
//r
NSString *rString = [cString substringWithRange:range];
//g
range.location = 2;
NSString *gString = [cString substringWithRange:range];
//b
range.location = 4;
NSString *bString = [cString substringWithRange:range];
// Scan values
unsigned int r, g, b;
[[NSScanner scannerWithString:rString] scanHexInt:&r];
[[NSScanner scannerWithString:gString] scanHexInt:&g];
[[NSScanner scannerWithString:bString] scanHexInt:&b];
return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:1.0f];
}