Question

我有这个方法，当用UIPanGestureRecognizer拖动我的按钮时调用：

- (void)wasDragged:(UIPanGestureRecognizer *)recognizer {

    UIButton *button = (UIButton *)[recognizer view];
    CGPoint translation = [recognizer translationInView:button];

    button.center = CGPointMake(button.center.x + translation.x, button.center.y + translation.y);
    [recognizer setTranslation:CGPointZero inView:button];

    if(recognizer.state == UIGestureRecognizerStateEnded)  {

        for (UIView *field in self.fieldsArray) {

            CGPoint fieldCenter = [field convertPoint:field.center toView:self.view];

            if (CGRectContainsPoint (button.frame, fieldCenter)) {
                NSLog(@"done");
                break;
            } else {
                NSLog(@"nope");
            }

        }
    }
}

我的self.fieldsArray以其他方式创建：

    for (int i = 0; i < quantity; i++) {
        UIView *field = [[UIView alloc] initWithFrame:CGRectMake(i * (widthOfField + 3), 0, widthOfField, 50 )];

        [field setBackgroundColor:[UIColor colorWithRed:70/255 green:70/255 blue:70/255 alpha:1.0]];
        [field.layer setShadowOffset:CGSizeMake(2, 2)];
        [field.layer setShadowColor:[[UIColor blackColor] CGColor]];
        [field.layer setShadowOpacity:0.8];
        [field.layer setCornerRadius:10];

        [self.fieldsArray addObject:field];

        [self.fieldsView addSubview:field];
    }

问题是：为什么当我将按钮拖到1号或3号或5号等字段时，我有“完成”消息。当我将按钮拖到2或4或6等字段时，我有“不”？

如果我删除break;：例如，当我拖动字段编号5（以及我的所有6个）上的按钮时，我有日志：nope, nope, done, nope, nope, nope 在第3号字段：nope, done, nope, nope, nope, nope

Objective-C：CGRectContainsPoint麻烦

0 个答案: