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我從蘋果公司的網站上得到這個截圖方法:抓圖方法:跳繩狀態欄
- (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;
}
它的工作原理就像一個魅力,但我有一個小問題,它:我不想在狀態欄在我的屏幕截圖中顯示應用程序。我應該修改什麼?我真的不知道我應該在這裏修改什麼,因爲我從來沒有太多的CG框架。我在考慮減少20(狀態欄高度)的東西獲得「y」屬性,但我不想打破這種方法。那麼,我應該修改什麼來截取除狀態欄以外的所有內容?再次,我很抱歉如果這是一個真正的愚蠢的問題,但我真的不知道我會做什麼,我會嘗試自己修改它。
將此標記爲您的答案,以幫助其他人將此問題確定爲已解決。謝謝! +1 – Stunner 2012-08-03 00:42:28
我會的。但是我得先等兩天。 – 2012-08-03 00:42:52