Question

如何更改iOS上的UISearchBar组件的内部背景颜色

Answer 1

1. 使用此代码改变seekbar“UITextField将backgroundImageUITextField *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 == nil)) {
searchField.textColor = [UIColor whiteColor];
[searchField setBackground: [UIImage imageNamed:@"yourImage"]];//just add here gray image which you display in quetion
[searchField setBorderStyle:UITextBorderStyleNone];
}

该波纹管代码的变化UISearchBarIcon UIImageView *searchIcon = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"yourSearchBarIconImage"]];
searchIcon.frame = CGRectMake(10, 10, 24, 24);
[searchBar addSubview:searchIcon];
[searchIcon release];

也为改变searcBar图标seekbar的你哪些可用的iOS 5 +- (void)setImage:(UIImage *)iconImage forSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)state

在这里你可以设置4种UISearchBarIcon即UISearchBarIconBookmarkUISearchBarIconClearUISearchBarIconResultsListUISearchBarIconSearch我希望这可以帮助您...
2. 根据的UISearchBar 你这个函数适用于iOS 5.0 +。- (void)setSearchFieldBackgroundImage:(UIImage *)backgroundImage forState:(UIControlState)state

用例：[mySearchBar setSearchFieldBackgroundImage:myImage forState:UIControlStateNormal];

可悲的是，在iOS 4的你需要恢复到较少见其他的答案。
3. 只是自定义文本字段本身。 我只是这样做的，它工作正常（的iOS 7）。UITextField *txfSearchField = [_searchBar valueForKey:@"_searchField"];
txfSearchField.backgroundColor = [UIColor redColor];

这样，您就不需要创建一个图像，它的大小，等..
4. 对于只改变颜色：searchBar.tintColor = [UIColor redColor];

为应用背景图：[self.searchBar setSearchFieldBackgroundImage:
[UIImage imageNamed:@"Searchbox.png"]
forState:UIControlStateNormal];

5. 私有API的：for (UIView* subview in [[self.searchBar.subviews lastObject] subviews]) {
if ([subview isKindOfClass:[UITextField class]]) {
UITextField *textField = (UITextField*)subview;
[textField setBackgroundColor:[UIColor redColor]];
}
}

Answer 2

修改UISearchBar背景颜色
UISearchBar是由两个subView组成的，一个是UISearchBarBackGround,另一个是UITextField. 要IB中没有直接操作背景的属性。方法一：是直接将 UISearchBarBackGround移去。方法二：是创建一个UIView设置其颜色加载到UISearchBarBaceGround上作为UISearchBar的背景颜色

方法一：

UISearchBar *seachBar=[[UISearchBar alloc] init];

//修改搜索框背景

seachBar.backgroundColor=[UIColor clearColor];

//去掉搜索框背景

//1.

[[searchbar.subviews objectAtIndex:0]removeFromSuperview];

//2.

for (UIView *subview in seachBar.subviews)

{

if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")])

{

[subview removeFromSuperview];

break;

}

}

//3自定义背景

UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"40-di.png"]];

[mySearchBar insertSubview:imageView atIndex:1];

还有一种方法是自定制searchbar，用UITextfield代替不是更好么