[翻译] UIImageView-Letters

UIImageView-Letters

https://github.com/bachonk/UIImageView-Letters

An easy, helpful UIImageView category that generates letter initials as a placeholder for user profile images, with a randomized background color

一个简单，易用的，根据用户的英文名字生成了一个placeholder文件，并随机赋上一种颜色

Usage

In the file where you want to use the category, be sure to import the file.

#import "UIImageView+Letters.h"

在你想用的地方，引入头文件即可

Methods 方法

Call the following methods on any UIImageView instance to set the image:

你可以给UIImageView调用如下两种方法：

- (void)setImageWithString:(NSString *)string
- (void)setImageWithString:(NSString *)string color:(UIColor *)color

string is the string used to generate the initials. This should be a user's full name if available.

string是用来产生缩写的，当然，这个得需要是用户合法的全名。

color is an optional parameter that sets the background color of the image. Pass in nil to have a color automatically generated for you.

颜色是备选参数，用来设置图片背景色的。如果你传递了nil值，他会给你随机产生一种颜色。

Example 使用示例

NSString *userName = @"Michael Bluth";
UIImageView *myImgView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10, 50, 50)];
[myImgView setImageWithString:userName];

以下附上本人的使用教程：

//
//  RootViewController.m
//  Letter
//
//  Created by YouXianMing on 14-9-13.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import "RootViewController.h"
#import "UIImageView+Letters.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    NSArray *nameArray = @[@"Michael Bluth", @"You Xian", @"Jim Simith",
                           @"Li Dian",       @"Jun Gang", @"You Jin",
                           @"Lin Ken",       @"Li kui",   @"Leter Jun"];
    
    for (int i = 0; i < nameArray.count; i++)
    {
        NSString     *userName        = nameArray[i];
        UIImageView *myImgView        = 
            [[UIImageView alloc] initWithFrame:CGRectMake(30 + (i%3)*100, // 求余
                                                          30 + (i/3)*100, // 取整
                                                          60, 60)];
        myImgView.layer.cornerRadius  = 30.f;
        myImgView.layer.masksToBounds = YES;
        [myImgView setImageWithString:userName];
        [self.view addSubview:myImgView];
    }
}

@end

再来看看人家的源码：