iOS 模拟器在方向检测方面有问题吗？

发布于 2024-12-20 01:02:29 字数 783 浏览 4 评论 0原文

我正在从苹果（xcode）获得的ios模拟器上测试一段代码。基本上我试图在用户旋转 ipad 时重置缩放比例，但在模拟器上它非常不一致。我最初的基本代码是说如果方向是 90 则执行此操作，如果方向是 -90 则执行此操作，依此类推，但如果我的原始方向是横向或纵向，则可能会搞砸。这种行为仅适用于ios模拟器还是与ipad相同，我没有ipad，所以我无法验证

何时重置缩放，我首先将元标记内容全部删除，然后再次添加到内容，因为如果我不这样做这样做，它根本不起作用

示例代码是，我尝试使用设备宽度，它只是搞砸了。我不想使用CSS，因为内容是固定宽度的，所以我只需要重新缩放。难道我的方法错了？还有另一种经过测试的方法吗？我以前使用过 switch 语句，但我发现 if 更简单。谢谢

if (orientation == 0 || orientation == 180) {
        viewport.attr("content", "");
        viewport.attr("content", "user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1, width=990px");
    }
    else {
        viewport.attr("content", "");
        viewport.attr("content", "user-scalable=no, initial-scale=0.77, minimum-scale=0.77, maximum-scale=0.77, width=990px");
    }
}

原文

I am testing a piece of code on the ios simulator you get from apple (xcode).
basically I am trying to reset the scaling when the user rotates the ipad but on the simulator it is so inconsistant. I originally had the basic code to say if orientation is 90 do this, if it is -90 do that and so on but if my original orientation is landscape or portrait it might screw up. is this behavior just with ios simulator or the same as ipad, i don't have an ipad with me so i cannot verify

when i reset the scaling i am first removing the meta tag content all together then adding to content again because if i dont do so, it does not work at all

sample code would be, i have tried using device width, it just screws up. I dont want to use css because the content is fix width so i just need to rescale. is my method wrong? is there another tested approach? I used a switch statement before but i find the if much simpler. thank you

if (orientation == 0 || orientation == 180) {
        viewport.attr("content", "");
        viewport.attr("content", "user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1, width=990px");
    }
    else {
        viewport.attr("content", "");
        viewport.attr("content", "user-scalable=no, initial-scale=0.77, minimum-scale=0.77, maximum-scale=0.77, width=990px");
    }
}

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