Ios 从屏幕捕获中删除状态栏条

当我用下面的代码以编程方式拍摄屏幕快照时，它会在状态栏应该位于的位置留下一个白色的条带。我知道你无法捕获状态栏，但我只想剪掉白色的空白条

- (UIImage*)captureView:(UIView *)view
{
CALayer *layer = [[UIApplication sharedApplication] keyWindow].layer;
CGFloat scale = [UIScreen mainScreen].scale;
UIGraphicsBeginImageContextWithOptions(layer.frame.size, NO, scale);

[layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return img;

}

---

我重复了另一个问题的答案，它应该可以解决您的问题：

我以前在小班下面写过这篇文章。你可以利用它。后一个函数可以获得整个屏幕的截图（它是从苹果指南中获得的，所以它绝对是安全的）。我添加的第一部分处理不同的尺度（视网膜或规则）。愿它有帮助

#import "ScreenshotTaker.h"
#import <QuartzCore/QuartzCore.h>

@implementation ScreenshotTaker


+(UIImage *) captureRectOfScreen:(CGRect) rect
{
    UIImage *wholeScreen = [ScreenshotTaker screenshot];

    //Add status bar height
    rect.origin.y += UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation) ? [[UIApplication sharedApplication] statusBarFrame].size.width : [[UIApplication sharedApplication] statusBarFrame].size.height;

    //NSLog(@"%@",NSStringFromCGSize([wholeScreen size]));

    CGFloat scale = wholeScreen.scale;

    rect.origin.x *= scale;
    rect.origin.y *= scale;
    rect.size.width *= scale;
    rect.size.height *= scale;

    UIImage *cropped = [UIImage imageWithCGImage:CGImageCreateWithImageInRect([wholeScreen CGImage], rect) scale:wholeScreen.scale orientation:wholeScreen.imageOrientation];

    //NSLog(@"Whole Screen Capt :%@ Scale: %f",NSStringFromCGSize([wholeScreen size]), wholeScreen.scale);
    //NSLog(@"Rect to Crop :%@ Cropped :%@",NSStringFromCGRect(rect), NSStringFromCGSize([cropped size]));

    return cropped;
}

+(UIImage *) screenshot
{
    // Create a graphics context with the target size
    // On iOS 4 and later, use UIGraphicsBeginImageContextWithOptions to take the scale into consideration
    // On iOS prior to 4, fall back to use UIGraphicsBeginImageContext
    CGSize imageSize = [[UIScreen mainScreen] bounds].size;
    if (NULL != UIGraphicsBeginImageContextWithOptions)
        UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0);
    else
        UIGraphicsBeginImageContext(imageSize);

    CGContextRef context = UIGraphicsGetCurrentContext();

    // Iterate over every window from back to front
    for (UIWindow *window in [[UIApplication sharedApplication] windows])
    {
        if (![window respondsToSelector:@selector(screen)] || [window screen] == [UIScreen mainScreen])
        {
            // -renderInContext: renders in the coordinate space of the layer,
            // so we must first apply the layer's geometry to the graphics context
            CGContextSaveGState(context);
            // Center the context around the window's anchor point
            CGContextTranslateCTM(context, [window center].x, [window center].y);
            // Apply the window's transform about the anchor point
            CGContextConcatCTM(context, [window transform]);
            // Offset by the portion of the bounds left of and above the anchor point
            CGContextTranslateCTM(context,
                                  -[window bounds].size.width * [[window layer] anchorPoint].x,
                                  -[window bounds].size.height * [[window layer] anchorPoint].y);

            // Render the layer hierarchy to the current context
            [[window layer] renderInContext:context];

            // Restore the context
            CGContextRestoreGState(context);
        }
    }

    // Retrieve the screenshot image
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return image;
}

@end

#导入“ScreenshotTaker.h”
#进口
@实施截屏员
+（UIImage*）CaptureRectof屏幕：（CGRect）rect
{
UIImage*批发屏幕=[截屏者截屏]；
//添加状态栏高度
rect.origin.y+=UIInterfaceOrientationIsLandscape（[UIApplication sharedApplication].statusBarOrientation）？[[UIApplication sharedApplication]statusBarFrame]。size.width:[[UIApplication sharedApplication]statusBarFrame]。size.height；
//NSLog（@“%@”、NSStringFromCGSize（[整屏大小]）；
CGFloat scale=全屏幕.scale；
矩形原点x*=刻度；
矩形原点y*=刻度；
rect.size.width*=比例；
rect.size.height*=比例；
UIImage*裁剪=[UIImage imageWithCGImage:CGImageCreateWithImageInRect（[WhistScreen CGImage]，rect）比例：WhistScreen.scale方向：WhistScreen.imageOrientation]；
//NSLog（@“全屏字幕：%@比例：%f”，NSStringFromCGSize（[整屏尺寸]），整屏.Scale）；
//NSLog（@“Rect to Crop:%@croped:%@”、NSStringFromCGRect（Rect）、NSStringFromCGSize（[裁剪大小]）；
复种；
}
+（UIImage*）屏幕截图
{
//创建具有目标大小的图形上下文
//在iOS 4及更高版本上，使用UIGraphicsBeginImageContextWithOptions可将比例考虑在内
//在4之前的iOS上，回退使用UIGraphicsBeginImageContext
CGSize imageSize=[[UIScreen mainScreen]界限].size；
if（NULL！=UIGraphicsBeginImageContextWithOptions）
UIGraphicsBeginImageContextWithOptions（图像大小，编号，0）；
其他的
UIGraphicsBeginImageContext（图像大小）；
CGContextRef context=UIGraphicsGetCurrentContext（）；
//从后向前遍历每个窗口
对于（在[[UIApplication sharedApplication]窗口]中的UIWindow*窗口）
{
如果（！[window respondsToSelector:@selector（屏幕）]| |[window screen]===[UIScreen Main screen]）
{
//-RenderContext：在图层的坐标空间中渲染，
//因此，我们必须首先将层的几何体应用于图形上下文
CGContextSaveGState（上下文）；
//围绕窗口的定位点将上下文居中
CGContextTranslateCm（上下文，[窗口中心].x，[窗口中心].y）；
//围绕定位点应用窗口的变换
CGContextConcatCTM（上下文，[窗口转换]）；
//由定位点左侧和上方的边界部分偏移
CGContextTranslateCm（上下文，
-[window bounds].size.width*[[window layer]anchorPoint].x，
-[窗口边界].size.height*[[窗口层]锚点].y）；
//将层层次渲染到当前上下文
[[window layer]renderInContext:context]；
//恢复上下文
CGContextRestoreGState（上下文）；
}
}
//检索屏幕截图图像
UIImage*image=UIGraphicsGetImageFromCurrentImageContext（）；
UIGraphicsSendImageContext（）；
返回图像；
}
@结束

太好了！把裁剪尺寸弄得乱七八糟，把我逼疯了。