将图像复制到粘贴板会将 jpeg 转码为 png

发布于 2024-10-29 18:32:12 字数 326 浏览 12 评论 0原文

我正在使用iPhone应用程序来嵌入/提取JPEG文件中的数据。我想让用户能够将所得图像复制到剪贴板上，但是当我将结果的jpeg复制到剪贴板时，我使用的代码将其掩盖为PNG。

我正在使用下面的代码，我有什么可以做的，以确保jpeg的copy and粘贴有点复制和粘贴？

// copy to clipboard
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.image = [UIImage imageNamed:@"output.jpg"];

提前致谢！

原文

I'm working on an iPhone app to embed/extract data in jpeg files. I want to give the user the ability to copy the resulting image to the clipboard, but the code I'm using coverts the resulting jpeg into a png when it gets copied to the clipboard.

I'm using the code below, is there anything I can do to ensure it is a bit by bit copy and paste of the jpeg?

// copy to clipboard
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.image = [UIImage imageNamed:@"output.jpg"];

Thanks in advance!

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私藏温柔 2024-11-05 18:32:12

我终于弄清楚了这一点。

// copy to clipboard
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
NSData *data = [NSData dataWithContentsOfFile:filePath];
[pasteboard setData:data forPasteboardType:@"public.jpeg"];

...

// copy from clipboard
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
NSData *data = [pasteboard dataForPasteboardType:@"public.jpeg"];
NSString  *copyPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/image.jpg"];
[data writeToFile:copyPath atomically:YES];

I finally figured this one out.

// copy to clipboard
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
NSData *data = [NSData dataWithContentsOfFile:filePath];
[pasteboard setData:data forPasteboardType:@"public.jpeg"];

...

// copy from clipboard
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
NSData *data = [pasteboard dataForPasteboardType:@"public.jpeg"];
NSString  *copyPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/image.jpg"];
[data writeToFile:copyPath atomically:YES];

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岁月如刀 2024-11-05 18:32:12

NSPasteboard *pboard  = [NSPasteboard generalPasteboard];
[pboard declareTypes: [NSMutableArray arrayWithObject:
                       NSTIFFPboardType] owner: nil];
[pboard setData:[imgView.image TIFFRepresentation] forType:NSTIFFPboardType];

NSData *data = [[NSPasteboard generalPasteboard] dataForType:NSPasteboardTypeTIFF];
    if (data) {
           // Do your stuff here 
    }

完全工作的代码，我使用相同的代码

祝你好运！

NSPasteboard *pboard  = [NSPasteboard generalPasteboard];
[pboard declareTypes: [NSMutableArray arrayWithObject:
                       NSTIFFPboardType] owner: nil];
[pboard setData:[imgView.image TIFFRepresentation] forType:NSTIFFPboardType];

NSData *data = [[NSPasteboard generalPasteboard] dataForType:NSPasteboardTypeTIFF];
    if (data) {
           // Do your stuff here 
    }

Completely working code , i m using same code

Good Luck !!!!

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