Ios 如何在Xcode中捕获屏幕上指定的区域截图

如何在Xcode中捕获屏幕上指定的区域截图

例如，我希望在屏幕上捕获一个区域（0100320200）并保存到UIImage对象

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谢谢

请尝试以下代码获取全屏截图（按键窗口）

尝试此代码以本机分辨率捕获UIView

CGRect rect = [captureView bounds];
UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);
CGContextRef context = UIGraphicsGetCurrentContext();
[captureView.layer renderInContext:context];   
UIImage *capturedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

如果需要的话，这会以jpg格式将UIImage以95%的质量保存在应用程序的文档文件夹中

NSString  *imagePath = [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/capturedImage.jpg"]];    
[UIImageJPEGRepresentation(capturedImage, 0.95) writeToFile:imagePath atomically:YES];

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来源：

请尝试以下代码获取全屏截图（关键窗口）

尝试此代码以本机分辨率捕获UIView

CGRect rect = [captureView bounds];
UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);
CGContextRef context = UIGraphicsGetCurrentContext();
[captureView.layer renderInContext:context];   
UIImage *capturedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

如果需要的话，这会以jpg格式将UIImage以95%的质量保存在应用程序的文档文件夹中

NSString  *imagePath = [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/capturedImage.jpg"]];    
[UIImageJPEGRepresentation(capturedImage, 0.95) writeToFile:imagePath atomically:YES];

资料来源：