OPAttributeString

示例

要运行示例项目，首先克隆仓库，然后从 Example 目录中以 pod install 开始。

要求

iOS 8.0 或更高版本
Xcode 7.3 或更高版本

起步

OPAttributeString 可通过 CocoaPods 获取。要安装它，只需将以下行添加到您的 Podfile 中

pod 'OPAttributeString'

如何使用

Objective-C

NSString *despicableMe = @"I know someone whoabccan fix that for you.";      
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.font([UIFont fontWithName:@"Courier New" size:12]);
    make.textColor([UIColor redColor]);
    make.backgroundColor([UIColor greenColor]);
}];

或者您可以这样写。

NSString *despicableMe = @"I know someone whoabccan fix that for you.";      
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.font([UIFont fontWithName:@"Courier New" size:12])
    .textColor([UIColor redColor])
    .backgroundColor([UIColor greenColor]);
}];

或者这样

NSString *despicableMe = @"I know someone whoabccan fix that for you.";
self.someLabel.attributedText = despicableMe.
font([UIFont fontWithName:@"Courier New" size:12])
.textColor([UIColor redColor])
.backgroundColor([UIColor greenColor])
.string;

现在您可以看到了。

但在大多数情况下，您想设置字符串的某个部分属性，有一些API可以使用。

from(index)

如果索引参数超出字符串范围，纠正处理规则如下

(index < 0 || index > string.length) ? 0 : index;

NSString *despicableMe = @"I know someone whoabccan fix that for you.";      
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.from(0).font([UIFont systemFontOfSize:10]);
}];

to(index)

纠正处理规则如下

(index < 0 || index > string.length) ? string.length : index;

NSString *despicableMe = @"I know someone whoabccan fix that for you.";      
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.font([UIFont systemFontOfSize:10]);
    make.to(5).font([UIFont systemFontOfSize:17]);
}];

fromTo(location,length)

纠正处理规则如下

位置规则：与from(index)相同。

长度规则：与to(index)相同。

NSString *despicableMe = @"I know someone whoabccan fix that for you.";      
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.font([UIFont systemFontOfSize:10]);
    make.to(5).font([UIFont systemFontOfSize:17]);
    make.fromTo(8,12).backgroundColor([UIColor orangeColor]);
}];

range(NSRange)

使用方式类似于fromTo(location,length)

NSString *despicableMe = @"I know someone whoabccan fix that for you.";      
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.font([UIFont systemFontOfSize:10]);
    make.to(5).font([UIFont systemFontOfSize:17]);
    make.range(NSMakeRange(0,10)).backgroundColor([UIColor orangeColor]);
}];

纠正处理规则如下

NS_INLINE BOOL rangeCheck(NSRange range, NSRange rangeContainer) {
    if(range.location < 0 || rangeContainer.location < 0 || rangeContainer.location > range.length) return false;
    return range.location <= rangeContainer.location && range.length >= rangeContainer.length;
}

rangeOf(somestring)

使用此函数查找字符或字符串的范围。

NSString *despicableMe = @"I know someone whoabccan fix that for you.";      
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.rangeOf(@"fix").strokeColor([UIColor blueColor]).strokeWidth(3);
}];

insert(...)

这是一个多参数函数，大体如下

第一种情况：在源字符串中插入一个字符串

NSString *despicableMe = @"I know someone whoabccan fix that for you.";
self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    // default insert a string to the end of source string
    make.insert(@"\n");
    // or you can specified a string and index to insert
    // the index parameter has rules same way to(index) used
    // so -1 means 'ooops' will be inserted to the end
    make.insert(@"ooops",-1);
}];

第二种情况：在源字符串中插入一个 NSAttributedString

NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:@"e"];
[string addAttribute:NSBackgroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 1)];

NSString *despicableMe = @"I know someone whoabccan fix that for you.";

self.someLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.insert(string);
    make.insert(string,-1);
}];

让我们更改不同的索引参数。

make.insert(string,0);
make.insert(string,-1);

然后显示如下

第三种情况：在源字符串中插入一个 UIImage

NSString *despicableMe = @"I know someone whoabccan fix that for you.";
            
self.demoLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    UIImage *img = [UIImage imageNamed:@"old_sj"];
    make.insert(img, 0, CGRectMake(0, 0, 18, 18), AttachmentAlignmentNormal);
}];

正则表达式模式

NSString *despicableMe = @"I know someone whoabccan fix that for you.";
            
self.demoLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    make.pattern(@"o").strokeColor([UIColor redColor]).strokeWidth(-5);
}];

从源字符串中删除一些字符或字符串，你可以通过这种方式完成。

NSString *despicableMe = @"I know someone whoabccan fix that for you.";
            
self.demoLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    // remove all char 'o' from source string.
    // defalut matching hole source string.
    make.removeE(@[@"o"]);
    // specified range
    make.removeE(@[@"o"],, NSMakeRange(0, 10));
    // mult-matching and specified range.
    make.removeE(@[@"e",@"o"], NSMakeRange(0, 10));
}];

用这种方式从源字符串中替换一些字符或字符串。范围规则：rangeCheck c 函数

NSString *despicableMe = @"I know someone whoabccan fix that for you.";
            
self.demoLabel.attributedText = [despicableMe make_Attribute:^(OPAttribute *make) {
    // matching the hole source string
    make.replace(@"o",@"O");
    // matching the hole source string in range
    make.replace(@"o",@"O",NSMakeRange(0, 8));
    // mult-matching the hole string with dictionary
    // dictionary's key will matching.
    // the dictionary key's matching value will be replaced by dictionary's value.
    // defalut matching hole source string.
    make.replaceE(@[@{@"e" : @"o"},@{@"y" : @"Y"}]);
    // in the same way ... in range
    make.replaceE(@[@{@"o" : @"0"},@{@"n" : @"u"}],NSMakeRange(0, 8));
}];