我在viewDidLoaddidRotateFromInterfaceOrientation处调用此函数

-(void) makeBox{
    [self.view1 removeFromSuperview];

    float viewWidth = CGRectGetWidth(self.view.frame);
    float viewHeight = CGRectGetHeight(self.view.frame);
    float startx = (viewWidth / 100) * 10;
    float starty = (viewHeight /100) * 20;

    float width = (viewWidth / 100) * 80;
    float height = (viewHeight /100) * 60;

    CGRect frame1 = CGRectMake(startx, starty, width, height);
    self.view1 = [[UIView alloc] initWithFrame:frame1];
    [self.view1 setBackgroundColor:[UIColor redColor]];

    [self.view addSubview:self.view1];
}


当视图确实发生变化时,其非常“粗糙”且根本不是十分优美。我正在使用模拟器,但是我假设如果我要在设备上运行,它将是相同的。我将如何使过渡更加顺畅?我会发布到用户体验页面,但我希望以编程方式执行此操作

除了学习之外,总体目的是从代码中获得与方向无关的图形(没有自动布局)。

最佳答案

如果您只是要更改视图,则无需删除视图并使用所需的框架创建一个新视图。只需就地修改视图框架:

- (void)makeBox {
    CGFloat viewWidth = CGRectGetWidth(self.view.frame);
    CGFloat viewHeight = CGRectGetHeight(self.view.frame);
    CGFloat startx = (viewWidth / 100) * 10;
    CGFloat starty = (viewHeight /100) * 20;

    CGFloat width = (viewWidth / 100) * 80;
    CGFloat height = (viewHeight /100) * 60;

    CGRect view1Frame = CGRectMake(startx, starty, width, height);

    if (!self.view1) {
        // The view doesn't exists yet, we create it
        self.view1 = [[UIView alloc] initWithFrame:view1Frame];
        [self.view1 setBackgroundColor:[UIColor redColor]];
        [self.view addSubview:self.view1];
    }
    else {
        // Just update the frame
        self.view1.frame = view1Frame;
    }
}


对于精美的UX,请将帧更新包装在动画块中:

// ... snip ...
else {
    [UIView animateWithDuration:0.3 animations:^() {
        self.view1.frame = view1Frame;
    }];
}

关于ios - iOS,优美的方向变化,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/28072457/

10-13 03:41