Question

您好我正在尝试在同一屏幕上将项目从集合视图添加到uiview。当用户点击我发现的单元格并将其放到下面的mycreationview时（我还希望用户移动这些添加的uiimages）。我在顶部有一个工具栏可以返回等等。现在，当我点击单元格3次时，会添加3个图像进行查看，但随后工具栏消失，其后面的按钮隐藏在顶部/左侧，只有四分之一可见，怎么能我调试了吗？



    myCollectionViewCell* cell=(myCollectionViewCell* ) [self.myCollectionView cellForItemAtIndexPath:index];
    UIImageView *iv = [[UIImageView alloc]initWithImage:cell.myCellImageView.image];
    iv.contentMode = UIViewContentModeScaleAspectFill;
    NSLayoutConstraint * constraint1 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeWidth multiplier:0.4f constant:0];
    NSLayoutConstraint * constraint2 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeHeight multiplier:0.4f constant:0];
    NSLayoutConstraint * constraint3 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeLeft multiplier:0 constant:10];
    NSLayoutConstraint * constraint4 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeTop multiplier:0 constant:10];

    [iv setTranslatesAutoresizingMaskIntoConstraints:NO];
    iv.autoresizesSubviews=YES;
    iv.userInteractionEnabled=YES;
    [self.myCreationView addSubview:iv];
    [self.myCreationView addConstraint:constraint1];
    [self.myCreationView addConstraint:constraint2];
    [self.myCreationView addConstraint:constraint3];
    [self.myCreationView addConstraint:constraint4];

myCollectionViewCell* cell=(myCollectionViewCell* ) [self.myCollectionView cellForItemAtIndexPath:index]; UIImageView *iv = [[UIImageView alloc]initWithImage:cell.myCellImageView.image]; iv.contentMode = UIViewContentModeScaleAspectFill; NSLayoutConstraint * constraint1 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeWidth multiplier:0.4f constant:0]; NSLayoutConstraint * constraint2 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeHeight multiplier:0.4f constant:0]; NSLayoutConstraint * constraint3 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeLeft multiplier:0 constant:10]; NSLayoutConstraint * constraint4 = [NSLayoutConstraint constraintWithItem:iv attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.myCreationView attribute:NSLayoutAttributeTop multiplier:0 constant:10]; [iv setTranslatesAutoresizingMaskIntoConstraints:NO]; iv.autoresizesSubviews=YES; iv.userInteractionEnabled=YES; [self.myCreationView addSubview:iv]; [self.myCreationView addConstraint:constraint1]; [self.myCreationView addConstraint:constraint2]; [self.myCreationView addConstraint:constraint3]; [self.myCreationView addConstraint:constraint4];

Answer 1

回答我的问题。我让视图变小了一点，而不是触摸工具栏，问题就消失了。所以我猜如果他们互相接触会产生约束。

添加三个子视图后，工具栏消失

1 个答案: