ios - 在点击点放置一个 UIView 以启动弹出窗口
<p><p>在我认为解决从 <code>UITableViewRowAction</code> 启动弹出框问题的一种相当聪明的方法中,我想在目标操作上放置一个清晰的 <code>UIView</code>并将其用于 <code>sourceRect</code> 以锚定 <code>UIPopoverPresentationController</code>。在这种情况下,目标操作是下面屏幕截图中显示的橙色“Acct”按钮。</p>
<p>我在整个 tableview 上使用了一个清晰的 <code>UIView</code> (<code>self.clearTopView</code>) 并用一个框架(我认为)来自 View 中的点击位置(<code>point</code>)和一个<code>CGSize</code>(<code>tappedRectSize</code>)。然后我将它作为 subview 添加到 <code>self.clearTopView</code>。我现在把它涂成黑色,这样我就可以找到它了。 </p>
<p>如下图所示,部分方案正在按计划进行。 <code>tappedViewOverlay</code>View 被添加,并适当着色。 <code>popoverPresentationController</code> (<code>thisPPC</code>) 按预期从该 View 启动。 </p>
<p> <a href="/image/jlxST.png" rel="noreferrer noopener nofollow"><img src="/image/jlxST.png" alt="enter image description here"/></a> </p>
<p>问题是 View 始终位于屏幕的左上角,而不是所需的位置,即点击发生的位置。以下是相关代码:</p>
<pre><code> else if ([ isEqualToString:@"AccountPopSegue"])
{
UITapGestureRecognizer *tapGestureRecognizer;
CGPoint point = ;
NSString *pointString = NSStringFromCGPoint(point);
NSLog(@"point is located at %@",pointString);
CGSize tappedRectSize= CGSizeMake(60,60);
CGRect tappedRect = {point,tappedRectSize};
NSString * tappedRectString = NSStringFromCGRect(tappedRect);
NSLog(@"tappedRect = %@",tappedRectString);
tappedViewOverlay = [initWithFrame:tappedRect];
tappedViewOverlay.backgroundColor = ;
;
;
NSString *tappedOverlayFrame = NSStringFromCGRect(tappedViewOverlay.frame);
NSLog(@"tappedViewOverlay.frame = %@",tappedOverlayFrame);
UIViewController *controller = segue.destinationViewController;
controller.popoverPresentationController.delegate = self;
controller.preferredContentSize = CGSizeMake(320, 186);
UIPopoverPresentationController *thisPPC = controller.popoverPresentationController;
thisNavController = (UINavigationController *)segue.destinationViewController;
AccountChangeVC *acCVC = (AccountChangeVC *)thisNavController.topViewController;
acCVC.delegate = self;
thisPPC.sourceView = self.clearTopView;
thisPPC.sourceRect = tappedViewOverlay.bounds;
</code></pre>
<p><strong>谁能告诉我哪里出错了?</strong></p>
<p><strong>编辑</strong></p>
<p>CoderWang 指出了我的代码中的一个疏忽,所以我已经纠正了它:</p>
<pre><code> else if ([ isEqualToString:@"AccountPopSegue"])
{
UITapGestureRecognizer *tapGestureRecognizer = [init];
;
CGPoint point = ;
NSString *pointString = NSStringFromCGPoint(point);
NSLog(@"point is located at %@",pointString);
CGSize tappedRectSize= CGSizeMake(60,60);
CGRect tappedRect = {point,tappedRectSize};
NSString * tappedRectString = NSStringFromCGRect(tappedRect);
NSLog(@"tappedRect = %@",tappedRectString);
tappedViewOverlay = [initWithFrame:tappedRect];
tappedViewOverlay.backgroundColor = ;
;
;
NSString *tappedOverlayFrame = NSStringFromCGRect(tappedViewOverlay.frame);
NSLog(@"tappedViewOverlay.frame = %@",tappedOverlayFrame);
UIViewController *controller = segue.destinationViewController;
controller.popoverPresentationController.delegate = self;
controller.preferredContentSize = CGSizeMake(320, 186);
UIPopoverPresentationController *thisPPC = controller.popoverPresentationController;
thisNavController = (UINavigationController *)segue.destinationViewController;
AccountChangeVC *acCVC = (AccountChangeVC *)thisNavController.topViewController;
acCVC.delegate = self;
thisPPC.sourceView = self.clearTopView;
thisPPC.sourceRect = tappedViewOverlay.bounds;
</code></pre>
<p>此更改(<code>tapGestureRecognizer</code> 的初始化和对 <code>self.clearTopView</code> 的添加)在黑色 <code>tappedViewOverlay</code>View 的位置上产生了轻微的变化.您可以在以下屏幕截图中看到它隐藏在“返回”导航按钮后面:</p>
<p> <a href="/image/bOyyR.png" rel="noreferrer noopener nofollow"><img src="/image/bOyyR.png" alt="enter image description here"/></a> </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>问题是“tappedRect”不正确,不知 Prop 体原因。
但是您可以尝试以下方法将“Acct”按钮转换为 self.clearTopView 的矩形:</p>
<pre><code>CGRect tappedRect = ;
</code></pre>
<p>或转换为窗口(因为 self.clearTopView 在整个 tableview 上):</p>
<pre><code>CGRect tappedRect = ;
</code></pre></p>
<p style="font-size: 20px;">关于ios - 在点击点放置一个 UIView 以启动弹出窗口,我们在Stack Overflow上找到一个类似的问题:
<a href="https://stackoverflow.com/questions/38490169/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/38490169/
</a>
</p>
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