UISearchBar基本设置 和 代理方法

UISearchBar 基本设置

UISearchBar 在延展中签订代理协议

[code]@interface RootViewController () <UISearchBarDelegate>

@end

UISearchBar 创建对象

[code]UISearchBar *search = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 100, 375, 80)];
    [self.view addSubview:search];
    [search release];

UISearchBar 基本属性

[code]search.placeholder = @"search"; /* 占位字符 */
search.prompt = @"蓝鸥"; /* 搜索框提示标题 */
search.text = @"lanou"; /* 开始时的字符 */
search.barStyle = 1;
search.barTintColor = [UIColor purpleColor];
/* 设置搜索框颜色 */
search.translucent = YES; /* 透明设置 */

UISearchBar 输入设置

[code]search.autocapitalizationType = 4;  /* 枚举 1无设置 2单词首字母大写 3一句话首字母大写 4所有字母都大写 */
search.keyboardType = 1; /* 键盘类型 */
    /* searchButton设置 */
search.showsBookmarkButton = YES;
     /* 书签button */
search.showsCancelButton = YES; /* 取消button 当输入框为第一响应者时 取消button 可以点击 */
search.showsSearchResultsButton = YES; /* 搜索结果button */
[search setShowsCancelButton:YES animated:YES]; /* 动画效果的取消button */

UISearchBar 下面的Button设置

[code]search.showsScopeBar = YES; /* 范围button显示 */
search.scopeButtonTitles = @[@"0", @"1", @"2"];/* 元素个数为范围条内button个数 */
search.selectedScopeButtonIndex = 2; /* 初始范围button选择 */
/* 背景图设置 */
[search setBackgroundImage:[UIImage imageNamed:@"01.jpg"]]; /* 搜索框设置背景照片 */
[search setScopeBarBackgroundImage:[UIImage imageNamed:@"01.jpg"]]; /* 给范围button 设置背景照片*/
[search setImage:[UIImage imageNamed:@"01.jpg"] forSearchBarIcon:UISearchBarIconResultsList state:(UIControlStateNormal)];/* 给搜索结果列表按钮设置图片 */

UISearchBar 代理方法 关于文本的监控

控制搜索框是否可以开始编辑

[code]- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar {
    return YES;
}

搜索框开始编辑时调用

[code]- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
    /* 点击button时以动画效果出现cancelButton */
    [searchBar setShowsCancelButton:YES animated:YES];
}

控制搜索框是否可以结束编辑回收键盘

[code]- (BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar {
    return NO;
}

输入框开始输入方法开始执行 输入框输入的内容即searchText

[code]- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
    NSLog(@"%@", searchText);
}

搜索框button点击代理方法

[code]/* 点击搜索按钮(输入键盘上得search)时调用 */
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
 /* 打印当前运行方法 */
    NSLog(@"%s", __func__);
}
/* 点击书签button时调用(书签button在和搜索结果列表button一个位置) */
- (void)searchBarBookmarkButtonClicked:(UISearchBar *)searchBar{
    NSLog(@"%s", __func__);
}
/* 点击取消button时调用 */
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
    /* 搜索框以动画效果消失 */
    [searchBar setShowsCancelButton:NO animated:YES];
    /* 收回键盘 */
    [searchBar resignFirstResponder];
    NSLog(@"%s", __func__);
}
/* 点击搜索结果button时调用 */
- (void)searchBarResultsListButtonClicked:(UISearchBar *)searchBar {
    NSLog(@"%s", __func__);
}
/* 选择范围button时调用 并提供选择button的下标 */
- (void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScope {
    NSLog(@"%s ,%ld", __func__, selectedScope);
}