ios - 截图方法 : Skipping the Status Bar
<p><p>我从苹果官网得到了这个截图方法:</p>
<pre><code>- (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 = [ 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 [ windows])
{
if (! || == )
{
// -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, .x, .y);
// Apply the window's transform about the anchor point
CGContextConcatCTM(context, );
// Offset by the portion of the bounds left of and above the anchor point
CGContextTranslateCTM(context,
-.size.width * [ anchorPoint].x,
-.size.height * [ anchorPoint].y);
// Render the layer hierarchy to the current context
[ renderInContext:context];
// Restore the context
CGContextRestoreGState(context);
}
}
// Retrieve the screenshot image
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
</code></pre>
<p>它就像一个魅力,但我有一个小问题:我不希望状态栏在我的屏幕截图中显示应用程序。我应该修改什么?老实说,我不知道我应该在这里修改什么,因为我从来没有过多地使用 CG 框架。我正在考虑从获得“y”属性的东西中减去 20(状态栏高度),但我不想破坏这种方法。那么我应该修改什么来截取除状态栏以外的所有内容?再次,如果这是一个真正愚蠢的问题,我深表歉意,但我真的不知道我会做什么,我应该自己尝试修改它。</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我刚刚想通了。事实上,我只是从“y”属性中减去了 20:</p>
<p>所以不要这样:</p>
<pre><code>CGContextTranslateCTM(context, .x, .y);
</code></pre>
<p>我这样做了:</p>
<pre><code>CGContextTranslateCTM(context, .x, .y - 20);
</code></pre>
<p>可能有更好的方法,但这个方法对我很有帮助。</p></p>
<p style="font-size: 20px;">关于ios - 截图方法 : Skipping the Status Bar,我们在Stack Overflow上找到一个类似的问题:
<a href="https://stackoverflow.com/questions/11787603/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/11787603/
</a>
</p>
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