Question

我的应用程序无法在-init和-viewWillLayoutSubviews方法之外设置框架。当一次点击editButton时会发生什么是一个隐藏编辑器视图的动画。尽管如此，我测试时没有任何反应。问题不是来自动画方法，因为-setFrame方法（不包括在块中）也不起作用。

以下是代码：

-(id)init {

    if (self = [super init]) {

        editButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:self action:@selector(editButtonTapped)];
        doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneButtonTapped)];


        editor = [[UIView alloc] init];
        [editor setBackgroundColor:[UIColor yellowColor]];
        editor.clipsToBounds = YES;
        editorIsOpen = YES;        

        portraitRegularModeEditorRect = CGRectMake(15, 59, 738, 100);
        portraitClosedEditorEditorRect = CGRectMake(15, 59, 738, 0);


    }
    return self;

}


- (void)viewDidLoad {

    [super viewDidLoad];

    [[self view] addSubview:editor];
    [[self view] setBackgroundColor:[UIColor blueColor]];

}


-(void)viewDidAppear:(BOOL)animated {

    [self setForRegularMode];

}




-(void)viewWillLayoutSubviews {

    UIInterfaceOrientation io = [[UIApplication sharedApplication] statusBarOrientation];
    if (io == UIInterfaceOrientationPortrait || io == UIInterfaceOrientationPortraitUpsideDown) {

        //portrait
        [editor setFrame:portraitRegularModeEditorRect];


     } else {

        //landscape

     }


}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}


-(void)editButtonTapped {

    [self setForScenarioLinesEditingMode];

}

-(void)doneButtonTapped {

    [self setForRegularMode];

}


-(void)setForRegularMode {

    editingMode = CPRegularMode;    

    if (!editorIsOpen) {

        [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationCurveEaseOut animations:^(void){

            [editor setFrame:portraitRegularModeEditorRect];

        } completion:^(BOOL finished) {

            editorIsOpen = YES;

        }];

    }


    [[self navigationItem] setRightBarButtonItems:[[NSArray alloc] initWithObjects:editButton,nil]];

}



-(void)setForScenarioLinesEditingMode {

    editingMode = CPScenarioLinesEditingMode;

    if (editorIsOpen) {

        [UIView animateWithDuration:0.3 delay:0.0 options:UIViewAnimationCurveEaseOut animations:^(void){

            [editor setFrame:portraitClosedEditorEditorRect];

        } completion:^(BOOL finished) {

            editorIsOpen = NO;

        }];

    }

    [[self navigationItem] setRightBarButtonItems:[[NSArray alloc] initWithObjects:doneButton,nil]];


}

如果有人可以提供帮助，请提前感谢;）

Answer 1

您的视图控制器是否在故事板中设置，并且您使用的是Autolayout（默认情况下是打开的吗？）如果是这样，setFrame将无法工作，您需要在从故事板创建插件后编辑约束。

或者，您可以在故事板中关闭Autolayout，如图here所示。

Answer 2

我认为您的案例中的问题是，在您设置的-(void)viewWillLayoutSubviews方法中，如果您在调用setFrame后尝试更改其他方法中的框架，请说明视图的默认框架您的视图，-(void)viewWillLayoutSubviews也将被调用，视图的框架将是默认框架。尝试从-(void)viewWillLayoutSubviews删除setFrame。

setFrame不会做任何事情

2 个答案: