AutoLayout对于特殊分辨率的处理方式

上一段时间有同事提了一个bug，说他手机用我们APP的时候图标全部都变型了，被强制拉长，现在分享一下这台手机OPPO R11s，分辨率高达2160*1080，这奇葩分辨率，一般的分辨率只是1920*1080，所以怪不得图标会拉长，现在教大家一个完美处理这个问题的方法。废话不多说，直接上代码

public void init(Context context)
{
getMetaData(context);

int[] screenSize = ScreenUtils.getScreenSize(context, useDeviceSize);
mScreenWidth = screenSize[0];
mScreenHeight = screenSize[1];
L.e(" screenWidth =" + mScreenWidth + " ,screenHeight = " + mScreenHeight);
}

private void getMetaData(Context context)
{
PackageManager packageManager = context.getPackageManager();
ApplicationInfo applicationInfo;
try
{
applicationInfo = packageManager.getApplicationInfo(context
.getPackageName(), PackageManager.GET_META_DATA);
if (applicationInfo != null && applicationInfo.metaData != null)
{
mDesignWidth = applicationInfo.metaData.getInt(KEY_DESIGN_WIDTH);
mDesignHeight = applicationInfo.metaData.getInt(KEY_DESIGN_HEIGHT);

}

} catch (PackageManager.NameNotFoundException e)
{
throw new RuntimeException(
"you must set " + KEY_DESIGN_WIDTH + " and " + KEY_DESIGN_HEIGHT + "  in your manifest file.", e);
}

L.e(" designWidth =" + mDesignWidth + " , designHeight = " + mDesignHeight);
}

这个是原来AutoLayout初始化的代码，可以看出他是根据我们设置的宽高来按比例显示，所以当出现分辨率不是16：9的时候会很恶心，所以这时候我们要做一个根据手机分辨率来调整参数的举动

private void getMetaData(Context context)
{
PackageManager packageManager = context.getPackageManager();
ApplicationInfo applicationInfo;
try
{
applicationInfo = packageManager.getApplicationInfo(context
.getPackageName(), PackageManager.GET_META_DATA);
if (applicationInfo != null && applicationInfo.metaData != null)
{
mDesignWidth = applicationInfo.metaData.getInt(KEY_DESIGN_WIDTH);
mDesignHeight = applicationInfo.metaData.getInt(KEY_DESIGN_HEIGHT);
/*if(PhoneUtil.getPhoneModel().equals("OPPO R11s"))
mDesignHeight = 1500;*/
/**
* 针对有虚拟按键的手机重新计算数值
*/
if(PhoneUtil.isHaveNavigationBar(context)){
mDesignHeight = (PhoneUtil.getScreenHeight(context)+PhoneUtil.getNavigationBarHeight(context))*750/PhoneUtil.getScreenWidth(context);
}
}

} catch (PackageManager.NameNotFoundException e)
{
throw new RuntimeException(
"you must set " + KEY_DESIGN_WIDTH + " and " + KEY_DESIGN_HEIGHT + "  in your manifest file.", e);
}

L.e(" designWidth =" + mDesignWidth + " , designHeight = " + mDesignHeight);
}

首先要判断有没有虚拟按键，有的话要计算出来因为获取屏幕高度是不包括按钮的，而产商给出的屏幕的高度是虚拟按钮的高度再加系统获取的ScreenHeight。之后看代码就知道我重新计算了mDeisignHeight,750是我配置的屏幕宽度，这样就能完美解决奇葩分辨率的问题啦。