iOS-电子签名

Posted 2022-11-25 st646889325

有些APP开发中需要用到电子签名,封装成一个View,使用灵活.
ZHSignatureView.h里的一些配置参数,可以不传

@interface ZHSignatureView : UIView
/**
 已签名的照片,跳转传入
 */
@property(nonatomic, strong) UIImage *signImage;

/**
 签名笔划颜色，默认blackColor
 */
@property(nonatomic, strong) UIColor *lineColor;

/**
 签名笔划宽度，默认3.3
 */
@property(nonatomic, assign) CGFloat lineWidth;

/**
 无签名时占位文字，默认"签名区域"
 */
@property(nonatomic, copy) NSString *placeHoalder;

/**
 占位文字字体颜色，默认grayColor
 */
@property(nonatomic, strong) UIColor *placeHoalderTextColor;

/**
 占位文字字体大小，默认35
 */
@property(nonatomic, strong) UIFont *placeHoalderTextFont;

/**
 签名完成的回调Block,签名图片
 */
@property(nonatomic, copy) void(^signDone)(UIImage *signImage);

/**
 清除Blcok,可调用- (void)clearSignature;进行清除已有签名
 */
@property(nonatomic, copy) void(^signClear)(ZHSignatureView *signView);

/**
 清除签名
 */
- (void)clearSignature;

在需要签名的地方进行初始化

ZHSignatureView *sign = [[ZHSignatureView alloc] initWithFrame:CGRectMake(0, 0, size.width, size.height-navHeight)];
    sign.lineColor = [UIColor blueColor];
    sign.signDone = ^(UIImage *signImage) 
        self.signResult(signImage);
        [self.navigationController popViewControllerAnimated:YES];
    ;
    sign.signClear = ^(ZHSignatureView *signView) 
        [signView clearSignature];
    ;
    [self.view addSubview:sign];

一般签名我们都是横屏展示，具体方法详见Demo