iOS开发——UI篇OC篇&TextField作为搜索框的使用

 1 UITextField *text = [[UITextField alloc] init];
 2     text.frame = CGRectMake(0, 0, 320, 30);
 3     text.background = [UIImage resizeImage:@"searchbar_textfield_background"];
 4     //文字垂直居中
 5     text.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
 6     //搜索图标
 7     UIImageView *view = [[UIImageView alloc] init];
 8     view.image = [UIImage resizeImage:@"searchbar_textfield_search_icon"];
 9     view.frame = CGRectMake(0, 0, 35, 35);
10     //左边搜索图标的模式
11     view.contentMode = UIViewContentModeCenter;
12     text.leftView = view;
13     //左边搜索图标总是显示
14     text.leftViewMode = UITextFieldViewModeAlways;
15     //右边删除所有图标
16     text.clearButtonMode = UITextFieldViewModeAlways;
17     
18     self.navigationItem.titleView = text;

 1  //初始化
 2         /**
 3          *  使用TextField实现搜索框功能封装
 4          */
 5         //设置字体大小
 6         self.font = [UIFont systemFontOfSize:15];
 7         //设置提示文字
 8         self.placeholder = @"请输入搜索条件";
 9         //设置文本框的背景图片（使用分类实现拉伸效果）
10         self.background = [UIImage resizeImage:@"searchbar_textfield_background"];
11         //文字垂直居中
12         self.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
13         //搜索图标
14         UIImageView *view = [[UIImageView alloc] init];
15         //设置图片控制器的的图片
16         view.image = [UIImage resizeImage:@"searchbar_textfield_search_icon"];
17         //设置图片的frame
18         view.width = 30;
19         view.height = 30;
20         //左边搜索图标的模式
21         view.contentMode = UIViewContentModeCenter;
22         self.leftView = view;
23         //左边搜索图标总是显示
24         self.leftViewMode = UITextFieldViewModeAlways;
25         //右边删除所有图标
26         self.clearButtonMode = UITextFieldViewModeAlways;

1     iCocosSearchBar *searchbar = [iCocosSearchBar searchBar];
2     searchbar.width = 300;
3     searchbar.height = 30;
4     self.navigationItem.titleView = searchbar;

1    iCocosSearchBar *searchbar = [iCocosSearchBar searchBar];
2     searchbar.width = 300;
3     searchbar.height = 30;
4     [self.view addSubview:searchbar];