Question

有谁知道在哪个子视图中有一个活动的UIAlertView，或者如何找到它运行的线程？

Answer 1

如果您转储windows property的内容以及所有视图的所有子视图，您可以看到UIAlertView位于覆盖主窗口的单独窗口中。在这里，我有一个带有viewcontroller和tableview的导航栏（我删除了它的子视图，因为它们不相关）。

<UIWindow: 0x411fd50; frame = (0 0; 320 480); opaque = NO; autoresize = RM+BM; layer = <CALayer: 0x4120af0>>
: <UILayoutContainerView: 0x4123310; frame = (0 0; 320 480); autoresize = W+H; layer = <CALayer: 0x411f800>>
: | <UINavigationTransitionView: 0x4123500; frame = (0 0; 320 480); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x41232e0>>
: | : <UIViewControllerWrapperView: 0x4519d30; frame = (0 64; 320 416); autoresize = W+H; layer = <CALayer: 0x4519a40>>
: | : | <UITableView: 0x7808000; frame = (0 0; 320 416); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x45182a0>>
: | <UINavigationBar: 0x45018b0; frame = (0 20; 320 44); clipsToBounds = YES; autoresize = W; layer = <CALayer: 0x4500fe0>>
: | : <UINavigationItemView: 0x4522a20; frame = (100 8; 160 27); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x4526310>>
: | : <UINavigationItemButtonView: 0x45230a0; frame = (5 7; 87 30); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x4520260>>
<_UIAlertOverlayWindow: 0x4179b70; frame = (0 0; 320 480); opaque = NO; layer = <CALayer: 0x4188dc0>>
: <UIAlertView: 0x4194bc0; frame = (3.8 161.95; 312.4 177.1); transform = [1.1, 0, 0, 1.1, 0, 0]; opaque = NO; animations = { transform=<CABasicAnimation: 0x4191160>; opacity=<CABasicAnimation: 0x41226f0>; }; layer = <CALayer: 0x4144c30>>
: | <UILabel: 0x4177e70; frame = (12 15; 260 23); text = 'Name of Date'; clipsToBounds = YES; opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x4179370>>
: | <UILabel: 0x418b100; frame = (12 45; 260 41); text = 'Name of the date that you...'; clipsToBounds = YES; opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x4128450>>
: | <UIThreePartButton: 0x41942a0; frame = (11 102; 262 43); opaque = NO; tag = 1; layer = <CALayer: 0x4191f30>>

以下是生成转储的代码。我发现当某些事情没有按照我的预期行事时，看看会发生什么事情是有用的：

void dumpView(UIView* aView, NSString* indent) {
    if (aView) {
        NSLog(@"%@%@", indent, aView);      // dump this view

        if (aView.subviews.count > 0) {
            NSString* subIndent = [[NSString alloc] initWithFormat:@"%@%@", 
                           indent, ([indent length]/2)%2==0 ? @"| " : @": "];
            for (UIView* aSubview in aView.subviews) dumpView( aSubview, subIndent );
            [subIndent release];
        }
    }
}

void dumpWindows() {
    for (UIWindow* window in [UIApplication sharedApplication].windows) {
        dumpView(window, @"dumpView: ");
    }   
}

Answer 2

活动的UIAlertView位于一个单独的窗口中（_UIAlertOverlayWindow）。使用.windows property查找。

整个UI在主线程中运行。

Answer 3

根据您使用Windows和计时描述的问题，听起来应该实现alertView:didDismissWithButtonIndex:。您可以在该方法中触发您的后续代码。

编辑：如果那不起作用，我会尝试延迟执行FB的东西，在窗口确实消失后会延迟。

UIAlertView在哪里生活而不被解雇

3 个答案: