自定义搜索框

转载于 2015-08-19 09:44:19 发布 · 632 阅读

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#搜索框 #searchBar #uitextfield

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// 创建搜索框对象
    UITextField *searchBar = [[UITextField alloc] init];
    searchBar.frame = CGRectMake(0, 0, 300, 30);
    searchBar.font = [UIFont systemFontOfSize:15];
    searchBar.placeholder = @"请输入搜索条件";
    searchBar.background = [UIImage imageNamed:@"searchbar_textfield_background"];
    // 设置左边的放大镜图标
//    UIImage *image = [UIImage imageNamed:@"searchbar_textfield_search_icon"];
    // 通过initWithImage来创建初始化UIImageView，UIImageView的尺寸默认就等于image的尺寸
//    UIImageView *searchIcon = [[UIImageView alloc] initWithImage:image];

    // 通过init来创建初始化绝大部分控件，控件都是没有尺寸
    UIImageView *searchIcon = [[UIImageView alloc] init];
    searchIcon.image = [UIImage imageNamed:@"searchbar_textfield_search_icon"];
    searchIcon.frame = CGRectMake(0, 0, 30, 30);
    searchIcon.contentMode = UIViewContentModeCenter;
    searchBar.leftView = searchIcon;
    searchBar.leftViewMode = UITextFieldViewModeAlways;