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pptkV2EX member #392050, joined on 2019-03-14 10:59:54 +08:00 |
| 请问一下，谁有获取职业相关技能的接口或者方法 问与答 • pptk • Dec 1, 2020 • Lastly replied by sadfQED2 | 1 |
| 请问一下有人遇到过 CAGradientLayer 无法截图的问题 iOS • pptk • Nov 17, 2020 • Lastly replied by pptk | 1 |
| 想问一下原生 iOS 知道文件的 url，如何把文件内容转换成 file 的形势给 js 问与答 • pptk • Feb 25, 2020 • Lastly replied by randyo | 5 |
| iOS 或者 Android，同一个页面， UIScrollView/ScrollView，需要同时添加 2000 甚至更多的 View，请问有什么办法让他操作更顺畅？ V2EX • pptk • Apr 16, 2019 • Lastly replied by lizhuoli | 1 |
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Nov 17, 2020 Replied to a topic by pptk › iOS › 请问一下有人遇到过 CAGradientLayer 无法截图的问题 |
已解决
//绘制渐变
UIColor *firstColor = [[UIColor alloc]initWithCGColor:(CGColorRef)self.bgLayer.colors.firstObject];
UIColor *lastColor = [[UIColor alloc]initWithCGColor:(CGColorRef)self.bgLayer.colors.lastObject];
//创建一个 RGB 的颜色空间
CGColorSpaceRef rgb = CGColorSpaceCreateDeviceRGB();
//定义渐变颜色数组
CGFloat colors[] = {
firstColor.qmui_red, firstColor.qmui_green, firstColor.qmui_blue, 1.00,
lastColor.qmui_red, lastColor.qmui_green, lastColor.qmui_blue, 1.00
};
CGGradientRef _gradient = CGGradientCreateWithColorComponents(rgb, colors, NULL, sizeof(colors)/(sizeof(colors[0])*4));
UIGraphicsBeginImageContextWithOptions(self.preImage.size, NO, self.preImage.scale);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextInspectContext(context);
CGPoint start = CGPointMake(self.preImage.size.width/2, 0);
CGPoint end = CGPointMake(self.preImage.size.width/2, self.preImage.size.height);
CGContextDrawLinearGradient(context, _gradient, start, end, kCGGradientDrawsBeforeStartLocation);
CGImageRef imageRef = self.preImage.CGImage;
CGImageRef subImageRef = CGImageCreateWithImageInRect(imageRef,CGRectMakeWithSize(self.preImage.size));
CGContextDrawImage(context, CGRectMakeWithSize(self.preImage.size), subImageRef);
UIImage *imageOut = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//绘制渐变
UIColor *firstColor = [[UIColor alloc]initWithCGColor:(CGColorRef)self.bgLayer.colors.firstObject];
UIColor *lastColor = [[UIColor alloc]initWithCGColor:(CGColorRef)self.bgLayer.colors.lastObject];
//创建一个 RGB 的颜色空间
CGColorSpaceRef rgb = CGColorSpaceCreateDeviceRGB();
//定义渐变颜色数组
CGFloat colors[] = {
firstColor.qmui_red, firstColor.qmui_green, firstColor.qmui_blue, 1.00,
lastColor.qmui_red, lastColor.qmui_green, lastColor.qmui_blue, 1.00
};
CGGradientRef _gradient = CGGradientCreateWithColorComponents(rgb, colors, NULL, sizeof(colors)/(sizeof(colors[0])*4));
UIGraphicsBeginImageContextWithOptions(self.preImage.size, NO, self.preImage.scale);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextInspectContext(context);
CGPoint start = CGPointMake(self.preImage.size.width/2, 0);
CGPoint end = CGPointMake(self.preImage.size.width/2, self.preImage.size.height);
CGContextDrawLinearGradient(context, _gradient, start, end, kCGGradientDrawsBeforeStartLocation);
CGImageRef imageRef = self.preImage.CGImage;
CGImageRef subImageRef = CGImageCreateWithImageInRect(imageRef,CGRectMakeWithSize(self.preImage.size));
CGContextDrawImage(context, CGRectMakeWithSize(self.preImage.size), subImageRef);
UIImage *imageOut = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
Aug 26, 2020 Replied to a topic by luckyrayyy › macOS › MacOS 的磁盘格式这么强？复制到移动硬盘上大了好多 |
@luckyrayyy 已解决，直接抹掉移动硬盘，修改硬盘文件格式为 APFS 即可。
Aug 26, 2020 Replied to a topic by luckyrayyy › macOS › MacOS 的磁盘格式这么强？复制到移动硬盘上大了好多 |
@luckyrayyy 我特么的拉个 xcode 进去 512G 的移动硬盘直接剩下 30G...这...
Aug 26, 2020 Replied to a topic by luckyrayyy › macOS › MacOS 的磁盘格式这么强？复制到移动硬盘上大了好多 |
大哥，最后怎么解决的啊
Feb 25, 2020 Replied to a topic by pptk › 问与答 › 想问一下原生 iOS 知道文件的 url，如何把文件内容转换成 file 的形势给 js |
@randyo sheetjs 可以直接打开 base64 吗？我不太会 js,整个 demo 和操作都是扒的 sheetjs 网站上的 demo 修修改搞的
Feb 24, 2020 Replied to a topic by pptk › 问与答 › 想问一下原生 iOS 知道文件的 url，如何把文件内容转换成 file 的形势给 js |
@randyo 这里的 url，指的是手机本地的文件地址哈，我没有描述清楚
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