Question

对我们这些人来说，我的问题可能很简单，但我无法找到解决方案。我有一种自动创建视图的方法（文本字段，标签和文本视图）。这就像一张登记表。问题是，当我将屏幕更改为横向模式时，我想更改视图宽度。为此，我使用了[self.view removeFromSuperview]并再次创建了视图。问题是视图不会使用横向宽度重新创建。我无法使用IB在方向更改时自动调整视图。视图在viewDidLoad中创建，并在- (void) adjustViewsForOrientation:(UIInterfaceOrientation)orientation {}中删除并重新创建。我不知道为什么删除后不会重新创建这些视图。如果有其他解决方案可以与我分享，我会很感激。

以下是我创建视图的方式：

-(void)createViews:(int)width
{
for(int i = 0; i < numberOfTextfields; i++) {
        textfieldPadding = textfieldPadding+40;//set some space between the text fields
        labelPadding = labelPadding+40;//set some space between the labels

        UITextField *field = [[UITextField alloc] initWithFrame:
                              CGRectMake(10,i*textfieldHeight+textfieldPadding+firstTextfieldHeight+10,width, textfieldHeight)]; 
        field.autoresizingMask = UIViewAutoresizingFlexibleWidth;
        //field.backgroundColor= [UIColor cyanColor];
        field.placeholder = [labels objectAtIndex:i];
        field.borderStyle=UITextBorderStyleRoundedRect;
        field.returnKeyType = UIReturnKeyDone;
        [field addTarget:self action:@selector(doneButton:)

        forControlEvents:UIControlEventEditingDidEndOnExit];

        UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, i*labelHeight+firstLabelHeight+labelPadding-20, width, labelHeight)];

        label.text = [labels objectAtIndex:i];
        //label.backgroundColor = [UIColor brownColor];
        [scrollView addSubview:field];
        [scrollView addSubview:label];

        [textfields addObject:field];
        [labels addObject:label];
        [field release];
        [label release];
    }
}

这是我想删除它们并重新创建它们的地方：

- (void) adjustViewsForOrientation:(UIInterfaceOrientation)orientation 
{    
    if (orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight) 
    {
        [self.view removeFromSuperview];
        [self createViews:landscapeWidth];
    }
    else if(orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown)
    {
        [self.view removeFromSuperview];
        [self createViews:portraitWidth];
    }
}

提前致谢！

Answer 1

您最初创建视图时，不是仅删除，调整大小，然后重新添加，而是在创建视图时设置相应的autoresizingMask（link）？

UITextField *myTextField = [[UITextField alloc] initWithFrame:someRect];
// the following will automatically resize the width on orientation change
myTextField.autoresizingMask = UIViewAutoresizingFlexibleWidth; 
[myView addSubview:myTextField];
[myTextField release];

需要改变方向的建议iphone

1 个答案: