将RPSystemBroadcastPickerView添加到我的自定义视图并将事件发送到它的内部按钮时，UI无法响应

Question

在iOS 12上将RPSystemBroadcastPickerView添加到我的自定义视图，并将触摸事件发送到其内部按钮时，UI被阻塞，无法响应任何触摸事件。

下面是我的代码:当我收到通知时，我调用这个方法来初始化我的自定义视图：

- (void)presentMyCustomView
{
    MyCustomView *myCustomView = [[[[UIApplication sharedApplication] delegate] window] viewWithTag:kMyCustomViewTag];
    if (!myCustomView)
    {
        myCustomView = [[MyCustomView alloc] init];
        myCustomView.tag = kMyCustomViewTag;
        [[[[UIApplication sharedApplication] delegate] window] addSubview:myCustomView];
        [myCustomView release];
    }
}

在MyCustomView类初始化方法中，我创建了RPSystemBroadcoatPickerView并将其添加到MyCustomView：

RPSystemBroadcastPickerView *broadcastPicker = [[RPSystemBroadcastPickerView alloc] initWithFrame:CGRectMake(0, 0, 100.f, 100.f)];
broadcastPicker.preferredExtension = @"xxxxx";
self.broadcastPicker = broadcastPicker;
[self addSubview:broadcastPicker];
[broadcastPicker release];

但是当我运行我的项目时，有时UI被阻塞，MyCustomView上的所有其他元素都不能被触及。RPBroadcastPicker崩溃日志将在设备日志中找到，但不是每次常规崩溃日志中都可以找到。

我已经使用了很多方法，例如，将broadcastPicker直接添加到key窗口中，但都无能为力。

有人能帮我吗？非常感谢。

Answer 1

if (@available(iOS 12.0, *)) {
    RPSystemBroadcastPickerView *pickerView = [RPSystemBroadcastPickerView new];
    pickerView.preferredExtension = @"com.apple.sharescreen";
    SEL buttonPressed = NSSelectorFromString(@"buttonPressed:");
    if ([pickerView respondsToSelector:buttonPressed]) {
        [pickerView performSelector:buttonPressed withObject:nil];
    }
}