iOS|iOS - 截取屏幕某一区域 iOS-截取屏幕某一区域

方法一：（截图较清晰）

-(UIImage*) imageByCaptureScreen{ if(&UIGraphicsBeginImageContextWithOptions!=NULL) { //UIGraphicsBeginImageContextWithOptions([UIScreen mainScreen].bounds.size,NO,0); UIGraphicsBeginImageContextWithOptions(CGSizeMake(kScreenWidth, kScreenHeight - 64 - 50),NO,0); } else { UIGraphicsBeginImageContext(CGSizeMake(kScreenWidth, kScreenHeight - 64 - 50)); } CGContextRef context = UIGraphicsGetCurrentContext(); for(UIWindow*window in[[UIApplication sharedApplication]windows]) { if(![window respondsToSelector:@selector(screen)] || [window screen] == [UIScreen mainScreen]) { CGContextSaveGState(context); CGContextTranslateCTM(context, [window center].x, [window center].y); CGContextConcatCTM(context, [window transform]); //if(IOS7_OR_LATER) //{ //CGContextTranslateCTM(context, //-[window bounds].size.width* [[window layer]anchorPoint].x, //-[window bounds].size.height* [[window layer]anchorPoint].y); //} //else //{ CGContextTranslateCTM(context, -[window bounds].size.width* [[window layer]anchorPoint].x, -([window bounds].size.height)* [[window layer]anchorPoint].y-64); //} [[window layer]renderInContext:context]; CGContextRestoreGState(context); }}UIImage*image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; }

【iOS|iOS - 截取屏幕某一区域】方法二：（截取的图片清晰度不如方法一）

-(UIImage *)fullScreenshots{UIWindow *screenWindow = [[UIApplication sharedApplication] keyWindow]; UIGraphicsBeginImageContext(screenWindow.frame.size); //全屏截图，包括window[screenWindow.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage =UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); CGRect rect1 =CGRectMake(0 , 64 , kScreenWidth , kScreenHeight - 64 - 50); UIImage * imgeee = [UIImage imageWithCGImage:CGImageCreateWithImageInRect([viewImage CGImage], rect1)]; return imgeee; }