iphone - 当您点击外部(例如上方)时，如何使 uiactionsheet 关闭？

Question

当您点击外部(例如上方)时，如何关闭 uiactionsheet？这是针对 iPhone 的。显然 ipad 默认会这样做(我可能错了)。

Answer 1

好的，找到解决方案了。以下适用于 UIActionSheet 的子类

// For detecting taps outside of the alert view
-(void)tapOut:(UIGestureRecognizer *)gestureRecognizer {
    CGPoint p = [gestureRecognizer locationInView:self];
    if (p.y < 0) { // They tapped outside
        [self dismissWithClickedButtonIndex:0 animated:YES];
    }
}

-(void) showFromTabBar:(UITabBar *)view {
    [super showFromTabBar:view];

    // Capture taps outside the bounds of this alert view
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapOut:)];
    tap.cancelsTouchesInView = NO; // So that legit taps on the table bubble up to the tableview
    [self.superview addGestureRecognizer:tap];
    [tap release];
}

它的要点是在操作表的父 View 中添加一个手势识别器，并测试所有的点击以查看它们是否在操作表之上。