Objectivec 如何在 iOS 上更改 UISearchBar 组件的内部背景 colored颜色

使用以下代码更改搜索栏的UITextField背景图像:

UITextField *searchField;
NSUInteger numViews = [searchBar.subviews count];
for (int i = 0; i < numViews; i++) {
    if ([[searchBar.subviews objectAtIndex:i] isKindOfClass:[UITextField class]]) { //conform?
        searchField = [searchBar.subviews objectAtIndex:i];
    }
}
if (searchField) {
    searchField.textColor = [UIColor whiteColor];
    [searchField setBackground: [UIImage imageNamed:@"yourImage"]]; //set your gray background image here
    [searchField setBorderStyle:UITextBorderStyleNone];
}

使用以下代码更改UISearchBarIcon:

 UIImageView *searchIcon = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"yourSearchBarIconImage"]];
searchIcon.frame = CGRectMake(10, 10, 24, 24);
[searchBar addSubview:searchIcon];
[searchIcon release];

此外，要更改搜索栏图标，您可以在UISearchBar上使用以下内置方法(可从iOS 5+获得):

- (void)setImage:(UIImage *)iconImage forSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)state

在这里，您可以设置4种类型的UISearchBarIcon，即:

1. UISearchBarIconBookmark
2. UISearchBarIconClear
3. UISearchBarIconResultsList
4. UISearchBarIconSearch

我希望这能帮助你...