UISearchBar的各种设置

self.searchView = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, 30)];

[self.searchView becomeFirstResponder];

self.searchView.showsCancelButton = YES;

／／首先是取消按钮的中文还是英文字

for(UIView *view in  [[[self.searchView subviews] objectAtIndex:0] subviews]) {

if([view isKindOfClass:[NSClassFromString(@"UINavigationButton") class]]) {

UIButton * cancel =(UIButton *)view;

[cancel setTitle:@"取消" forState:UIControlStateNormal];

cancel.titleLabel.font = [UIFont systemFontOfSize:14];

}

}

//修改搜索框里面提示字的颜色和大小

UITextField *searchField = [self.searchView valueForKey:@"_searchField"];

//这里是搜索框的圆角

searchField.layer.cornerRadius = 15.0f;

searchField.layer.masksToBounds = YES;

//搜索框的背景色，设置的就是看上去比较深颜色的部分

searchField.backgroundColor = [UIColor colorWithRed:21/255.0 green:144/255.0 blue:91/255.0 alpha:1.0f];

//这个是修改水印文字字体的颜色

[searchField setValue:[UIColor lightGrayColor] forKeyPath:@"_placeholderLabel.textColor"];

//修改水印文字的大小

[searchField setValue:[UIFont boldSystemFontOfSize:16] forKeyPath:@"_placeholderLabel.font"];

UIImage* searchBarBg = [self GetImageWithColor:[UIColor redColor] andHeight:32];

//设置文本框背景,就是红色的部分

[self.searchView setSearchFieldBackgroundImage:searchBarBg forState:UIControlStateNormal];