圖文無(wú)關(guān).png

現(xiàn)在幾乎每一個(gè)app都會(huì)有登錄注冊(cè)，有登陸注冊(cè)就會(huì)有頭像。
為了方便調(diào)用下面封裝了一下個(gè)人頭像的代碼，大?？衫@道^_。

個(gè)人頭像有以下幾個(gè)屬性：

/** 頭像邊框顏色 （默認(rèn)白色）*/
@property (nonatomic, strong)UIColor *strokeColor;
/** 頭像邊框?qū)挾?（默認(rèn)2.0）*/
@property (nonatomic, assign)CGFloat strokeWidth;
/** 原始頭像占位圖片 */
@property (nonatomic, strong)UIImage *originalImage;
/** 是否需要頭像陰影 （默認(rèn)無(wú)）*/
@property (nonatomic, assign)BOOL needShadow;
/** 頭像 */
@property (nonatomic, assign)CircleHeadViewContentType contentType;

總之封裝的時(shí)候 就一個(gè)思想 把他當(dāng)做一個(gè)對(duì)象來(lái)考慮。
下面是源碼（直接復(fù)制粘貼即可使用）??

#import <UIKit/UIKit.h>

typedef NS_ENUM(NSInteger, CircleHeadViewContentType) {

    CircleHeadViewContentResize,
    CircleHeadViewContentResizeAspect,
    CircleHeadViewContentResizeAspectFill,
};

@interface ZJCircleHeadView : UIView
/** 頭像邊框顏色 （默認(rèn)白色）*/
@property (nonatomic, strong)UIColor *strokeColor;
/** 頭像邊框?qū)挾?（默認(rèn)2.0）*/
@property (nonatomic, assign)CGFloat strokeWidth;
/** 原始頭像占位圖片 */
@property (nonatomic, strong)UIImage *originalImage;
/** 是否需要頭像陰影 （默認(rèn)無(wú)）*/
@property (nonatomic, assign)BOOL needShadow;
/** 頭像 */
@property (nonatomic, assign)CircleHeadViewContentType contentType;

- (void)setCircleImage:(UIImage *)image;

@end

#import "ZJCircleHeadView.h"

@implementation ZJCircleHeadView

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        //默認(rèn) 沒(méi)有頭像陰影
        self.needShadow = NO;
        //默認(rèn)邊框顏色 白色
        self.strokeColor = [UIColor whiteColor];
        //默認(rèn)邊框?qū)挾?2.0
        self.strokeWidth = 2.0;
        self.contentType = CircleHeadViewContentResize;
    }
    return self;
}

- (void)setCircleImage:(UIImage *)image
{
    
    self.originalImage = image;
    
    CGRect bounds = CGRectMake(0, 0, self.bounds.size.height, self.bounds.size.height);
    CGFloat cornerRadius = self.bounds.size.height/2;
    
    if (self.needShadow) {
        // 創(chuàng)建陰影層
        [self createShadowLayer:bounds cornerRadius:cornerRadius];
    }
    // 創(chuàng)建照片層
    [self createImageLayer:bounds cornerRadius:cornerRadius];
}

- (void)createShadowLayer:(CGRect)bounds cornerRadius:(CGFloat)cornerRadius
{
    CALayer *layerShadow = [[CALayer alloc]init];
    layerShadow.bounds = bounds;
    layerShadow.position = CGPointMake(self.bounds.size.width/2, self.bounds.size.height/2);
    layerShadow.cornerRadius = cornerRadius;
    layerShadow.shadowColor = [UIColor grayColor].CGColor;
    layerShadow.shadowOffset = CGSizeMake(2, 2);
    layerShadow.shadowOpacity = 1;
    layerShadow.borderColor = self.strokeColor.CGColor;
    layerShadow.borderWidth = self.strokeWidth;
    [self.layer addSublayer:layerShadow];
}

- (void)createImageLayer:(CGRect)bounds cornerRadius:(CGFloat)cornerRadius
{
    CALayer *layer = [[CALayer alloc]init];
    layer.bounds = bounds;
    layer.position = CGPointMake(self.bounds.size.width/2, self.bounds.size.height/2);
    layer.backgroundColor = [UIColor blackColor].CGColor;
    layer.cornerRadius = cornerRadius;
    layer.masksToBounds = YES;
    layer.borderColor = self.strokeColor.CGColor;
    layer.borderWidth = self.strokeWidth;
    layer.contents = (id)self.originalImage.CGImage;
    [self.layer addSublayer:layer];
    switch (self.contentType) {
        case CircleHeadViewContentResize:
        {
            layer.contentsGravity = kCAGravityResize;
        }
            break;
        case CircleHeadViewContentResizeAspect:
        {
            layer.contentsGravity = kCAGravityResizeAspect;
        }
            break;
        case CircleHeadViewContentResizeAspectFill:
        {
            layer.contentsGravity = kCAGravityResizeAspectFill;
        }
            break;
            
        default:
            break;
    }
}

@end

使用如下??

    //頭像
    _headView = [[ZJCircleHeadView alloc] initWithFrame:CGRectMake(0, 0, 80, 80)];
    _headView.center = CGPointMake(centerView.frame.size.width / 2, _headView.frame.size.height / 2);
    _headView.needShadow = YES;
    _headView.strokeWidth = 2.0;
    _headView.strokeColor = [UIColor whiteColor];
    _headView.contentType = CircleHeadViewContentResizeAspectFill;
    [_headView setCircleImage:[UIImage imageNamed:@"head"]];
    [centerView addSubview:_headView];

頭像效果.png