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Post
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Published
date
Jul 24, 2014
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summary
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iOS
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技术分享
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这里介绍一下关于 UITextField 的几个常用的操作，包括定义搜索框样式等
左侧添加图片
UIImageView *img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"right.png"]]; text.rightView = img; text.rightViewMode = UITextFieldViewModeAlways; text.leftView = img; text.leftViewMode = UITextFieldViewModeAlways;
设置垂直居中
UITextField 继承自 UIControl,此类中有一个属性contentVerticalAlignment 所以想让UITextField里面的text垂直居中可以这样写:
text.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
用UITextField自定义UISearchBar样式
定义样式为左侧带放大镜，背景白色，圆角
UITextField *textField = [[UITextField alloc]initWithFrame:CGRectMake(80, 7, 180, 30)]; textField.borderStyle = UITextBorderStyleNone; textField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter; textField.backgroundColor = [UIColor whiteColor]; textField.placeholder = @"输入要搜索的内容"; textField.font = [UIFont systemFontOfSize:12]; textField.layer.cornerRadius = 3.0; UIView *leftV = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 30, 30)]; UIImageView *leftImg = [[UIImageView alloc]initWithFrame:CGRectMake(9, 9, 12, 12)]; leftImg.image = [UIImage imageNamed:@"main_search_icon"];//放大镜的图片 [leftV addSubview:leftImg]; textField.leftView = leftV; textField.leftViewMode = UITextFieldViewModeAlways;
设置内边框
[self.yourTextField setValue:[NSNumber numberWithInt:5] forKey:@"_paddingTop"]; [self.yourTextField setValue:[NSNumber numberWithInt:5] forKey:@"_paddingLeft"]; [self.yourTextField setValue:[NSNumber numberWithInt:5] forKey:@"_paddingBottom"]; [self.yourTextField setValue:[NSNumber numberWithInt:5] forKey:@"_paddingRight"];