ustwo™ iOS 表单验证器

此框架允许您以方便的方式验证文本字段和文本视图的输入。

功能

• 简单地使用 US2ValidatorTextField 而不是 UITextField (US2ValidatorTextView 而不是 UITextView)
• 了解错误原因及位置
• 使用正则表达式等创建自己的条件
• 创建包含一系列条件自己的验证器

安装

克隆项目

从上述链接克隆项目。

将框架项目导入到您的项目

设置目标依赖项

将 US2Localizable.strings 添加到您的项目的复制包资源

如何

向验证器添加条件

US2Validator *validator = [[US2Validator alloc] init];

US2ConditionAlphabetic *condition = [[US2ConditionAlphabetic alloc] init];
[validator addCondition:condition];
[condition release];

US2ConditionCollection *conditionCollection1 = [validator checkConditions:@"HelloWorld"];
US2ConditionCollection *conditionCollection2 = [validator checkConditions:@"Hello World 123"];

BOOL isValid = conditionCollection1 == nil;                                                  // isValid == YES
isValid = conditionCollection2 == nil;                                                       // isValid == NO

// What went wrong?
NSLog(@"conditionCollection2: %@", conditionCollection2);

添加验证文本字段

US2ValidatorTextField *firstNameTextField  = [[US2ValidatorTextField alloc] init];
firstNameTextField.validator               = [[[MyProjectValidatorName alloc] init] autorelease];
firstNameTextField.shouldAllowViolation    = YES;
firstNameTextField.validateOnFocusLossOnly = YES;
firstNameTextField.placeholder             = @"Enter first name";
firstNameTextField.validatorUIDelegate     = self;
[_textUICollection addObject:firstNameTextField];
[firstNameTextField release];

创建自己的条件

创建接口。

#import <Foundation/Foundation.h>
#import "US2Condition.h"


@interface MyProjectConditionName : US2Condition

@end

创建实现。

#import "MyProjectConditionName.h"


@implementation MyProjectConditionName

- (BOOL)check:(NSString *)string
{
    if (nil == string)
        string = [NSString string];

    self.regexString = @"[a-zA-Z .-]";

    return [super check:string];
}


#pragma mark - Allow violation

- (BOOL)shouldAllowViolation
{
    return YES;
}


#pragma mark - Localization

- (NSString *)localizedViolationString
{
    return @"Not a valid name";
}


@end

创建自己的验证器

创建接口。

#import <Foundation/Foundation.h>
#import "US2Validator.h"


#pragma mark - Validator interface

@interface MyProjectValidatorName : US2Validator
{
}


@end

创建实现。

#import "MyProjectValidatorName.h"
#import "MyProjectConditionName.h"
#import "US2ConditionRange.h"


@implementation MyProjectValidatorName


#pragma mark - Initialization

- (id)init
{
    self = [super init];
    if (self)
    {
        [self addCondition:[[[MyProjectConditionName alloc] init] autorelease]];

        US2ConditionRange *rangeCondition   = [[[US2ConditionRange alloc] init] autorelease];
        rangeCondition.range                = NSMakeRange(2, UINT16_MAX);
        rangeCondition.shouldAllowViolation = YES;

        [self addCondition:rangeCondition];
    }

    return self;
}


@end