iPhone签名捕捉

发布于 2024-09-30 23:54:40 字数 48 浏览 3 评论 0原文

是否可以通过电缆 (USB) 连接将签名从 iPhone 传输到 .xls 文件?

Is it possible to transfer a signature from an iPhone into an .xls file via a cable (USB) connection?

如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论, 你可以免费 注册 一个本站的账号。

评论(1

你对谁都笑 2024-10-07 23:54:40

因此,这可能不完全是您正在寻找的内容,但这就是我捕获用户(用手指/手写笔)绘制的签名的方式。您的 UIImageView 将具有绘制的签名。我没有考虑过如何将签名图像传输到 .xls,但您可以将图像保存到设备的照片库,然后像导出任何其他图像一样将其导出,然后将其放入 .xls(我知道,这是一本手册)过程)。我希望这有帮助。

SignatureViewController.h

IBOutlet UIImageView *signatureImageView;

//Signature Drawing Items
CGPoint lastPoint;
BOOL mouseSwiped;   
int mouseMoved;

SignatureCaptureViewController.m

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {      
    mouseSwiped = NO;
    UITouch *touch = [touches anyObject];

    //Clear Signature on Double Tap
    if ([touch tapCount] == 2) {
        signatureImageView.image = nil;
        return;
    }

    lastPoint = [touch locationInView:signatureImageView];

}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    mouseSwiped = YES;

    UITouch *touch = [touches anyObject];   

    CGPoint currentPoint = [touch locationInView:signatureImageView];

    UIGraphicsBeginImageContext(signatureImageView.frame.size);
    [signatureImageView.image drawInRect:CGRectMake(0, 0, signatureImageView.frame.size.width, signatureImageView.frame.size.height)];
    CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
    CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 2.0);
    CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 0.0, 0.0, 0.0, 1.0);
    CGContextBeginPath(UIGraphicsGetCurrentContext());
    CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
    CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), currentPoint.x, currentPoint.y);
    CGContextStrokePath(UIGraphicsGetCurrentContext());

    signatureImageView.image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    lastPoint = currentPoint;
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [touches anyObject];

    //Clear Signature on Double Tap
    if ([touch tapCount] == 2) {
        signatureImageView.image = nil;
        return;
    }

    if(!mouseSwiped) {
        UIGraphicsBeginImageContext(signatureImageView.frame.size);
        [signatureImageView.image drawInRect:CGRectMake(0, 0, signatureImageView.frame.size.width, signatureImageView.frame.size.height)];
        CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
        CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 2.0);
        CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 0.0, 0.0, 0.0, 0.0);
        CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
        CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
        CGContextStrokePath(UIGraphicsGetCurrentContext());
        CGContextFlush(UIGraphicsGetCurrentContext());
        signatureImageView.image = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();
    }
}

So, this may not be exactly what you are looking for, but this is how I capture a signature drawn by a user (with their finger/stylus). Your UIImageView will have the drawn signature. I have not thought about how to transfer the signature image to the .xls but you could save the image to the device's photo library then export it like you would any other image, then drop it into the .xls (I know, that's a manual process). I hope this helps.

SignatureViewController.h

IBOutlet UIImageView *signatureImageView;

//Signature Drawing Items
CGPoint lastPoint;
BOOL mouseSwiped;   
int mouseMoved;

SignatureCaptureViewController.m

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {      
    mouseSwiped = NO;
    UITouch *touch = [touches anyObject];

    //Clear Signature on Double Tap
    if ([touch tapCount] == 2) {
        signatureImageView.image = nil;
        return;
    }

    lastPoint = [touch locationInView:signatureImageView];

}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    mouseSwiped = YES;

    UITouch *touch = [touches anyObject];   

    CGPoint currentPoint = [touch locationInView:signatureImageView];

    UIGraphicsBeginImageContext(signatureImageView.frame.size);
    [signatureImageView.image drawInRect:CGRectMake(0, 0, signatureImageView.frame.size.width, signatureImageView.frame.size.height)];
    CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
    CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 2.0);
    CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 0.0, 0.0, 0.0, 1.0);
    CGContextBeginPath(UIGraphicsGetCurrentContext());
    CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
    CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), currentPoint.x, currentPoint.y);
    CGContextStrokePath(UIGraphicsGetCurrentContext());

    signatureImageView.image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    lastPoint = currentPoint;
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [touches anyObject];

    //Clear Signature on Double Tap
    if ([touch tapCount] == 2) {
        signatureImageView.image = nil;
        return;
    }

    if(!mouseSwiped) {
        UIGraphicsBeginImageContext(signatureImageView.frame.size);
        [signatureImageView.image drawInRect:CGRectMake(0, 0, signatureImageView.frame.size.width, signatureImageView.frame.size.height)];
        CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
        CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 2.0);
        CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 0.0, 0.0, 0.0, 0.0);
        CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
        CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
        CGContextStrokePath(UIGraphicsGetCurrentContext());
        CGContextFlush(UIGraphicsGetCurrentContext());
        signatureImageView.image = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();
    }
}
~没有更多了~
我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
原文