获取底部导航栏的高度,有很多三方库都已实现,但有库几年没有更新的 使用上有的确实有些问题,我这里 抽取了 三方库 EasyFloat 这个库里面的二个类 经测其它机型用着都是没有问题的,现放出这两个类:
DisplayUtils
object DisplayUtils {
private const val TAG = "DisplayUtils--->"
fun px2dp(context: Context, pxVal: Float): Int {
val density = context.resources.displayMetrics.density
return (pxVal / density + 0.5f).toInt()
}
fun dp2px(context: Context, dpVal: Float): Int {
val density = context.resources.displayMetrics.density
return (dpVal * density + 0.5f).toInt()
}
fun px2sp(context: Context, pxValue: Float): Int {
val fontScale = context.resources.displayMetrics.scaledDensity
return (pxValue / fontScale + 0.5f).toInt()
}
fun sp2px(context: Context, spValue: Float): Int {
val fontScale = context.resources.displayMetrics.scaledDensity
return (spValue * fontScale + 0.5f).toInt()
}
/**
* 获取屏幕宽度(显示宽度,横屏的时候可能会小于物理像素值)
*/
fun getScreenWidth(context: Context): Int {
val manager = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
val metrics = DisplayMetrics()
manager.defaultDisplay.getRealMetrics(metrics)
return if (context.resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
metrics.widthPixels
} else {
metrics.widthPixels - getNavigationBarCurrentHeight(context)
}
}
/**
* 获取屏幕高度(物理像素值的高度)
*/
fun getScreenHeight(context: Context) = getScreenSize(context).y
/**
* 获取屏幕宽高
*/
fun getScreenSize(context: Context) = Point().apply {
val windowManager = context.getSystemService(Service.WINDOW_SERVICE) as WindowManager
val display = windowManager.defaultDisplay
display.getRealSize(this)
}
/**
* 获取状态栏高度
*/
fun getStatusBarHeight(context: Context): Int {
var result = 0
val resources = context.resources
val resourceId = resources.getIdentifier("status_bar_height", "dimen", "android")
if (resourceId > 0) result = resources.getDimensionPixelSize(resourceId)
return result
}
fun statusBarHeight(view: View) = getStatusBarHeight(view.context.applicationContext)
/**
* 获取导航栏真实的高度(可能未显示)
*/
fun getNavigationBarHeight(context: Context): Int {
var result = 0
val resources = context.resources
val resourceId =
resources.getIdentifier("navigation_bar_height", "dimen", "android")
if (resourceId > 0) result = resources.getDimensionPixelSize(resourceId)
return result
}
/**
* 获取导航栏当前的高度
*/
fun getNavigationBarCurrentHeight(context: Context) =
if (hasNavigationBar(context)) getNavigationBarHeight(context) else 0
/**
* 判断虚拟导航栏是否显示
*
* @param context 上下文对象
* @return true(显示虚拟导航栏),false(不显示或不支持虚拟导航栏)
*/
fun hasNavigationBar(context: Context) = when {
getNavigationBarHeight(context) == 0 -> false
RomUtils.checkIsHuaweiRom() && isHuaWeiHideNav(context) -> false
RomUtils.checkIsMiuiRom() && isMiuiFullScreen(context) -> false
RomUtils.checkIsVivoRom() && isVivoFullScreen(context) -> false
else -> isHasNavigationBar(context)
}
/**
* 不包含导航栏的有效高度(没有导航栏,或者已去除导航栏的高度)
*/
fun rejectedNavHeight(context: Context): Int {
val point = getScreenSize(context)
if (point.x > point.y) return point.y
return point.y - getNavigationBarCurrentHeight(context)
}
/**
* 华为手机是否隐藏了虚拟导航栏
* @return true 表示隐藏了,false 表示未隐藏
*/
private fun isHuaWeiHideNav(context: Context) =
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
Settings.System.getInt(context.contentResolver, "navigationbar_is_min", 0)
} else {
Settings.Global.getInt(context.contentResolver, "navigationbar_is_min", 0)
} != 0
/**
* 小米手机是否开启手势操作
* @return false 表示使用的是虚拟导航键(NavigationBar), true 表示使用的是手势, 默认是false
*/
private fun isMiuiFullScreen(context: Context) =
Settings.Global.getInt(context.contentResolver, "force_fsg_nav_bar", 0) != 0
/**
* Vivo手机是否开启手势操作
* @return false 表示使用的是虚拟导航键(NavigationBar), true 表示使用的是手势, 默认是false
*/
private fun isVivoFullScreen(context: Context): Boolean =
Settings.Secure.getInt(context.contentResolver, "navigation_gesture_on", 0) != 0
/**
* 其他手机根据屏幕真实高度与显示高度是否相同来判断
*/
private fun isHasNavigationBar(context: Context): Boolean {
val windowManager: WindowManager =
context.getSystemService(Service.WINDOW_SERVICE) as WindowManager
val d = windowManager.defaultDisplay
val realDisplayMetrics = DisplayMetrics()
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
d.getRealMetrics(realDisplayMetrics)
}
val realHeight = realDisplayMetrics.heightPixels
val realWidth = realDisplayMetrics.widthPixels
val displayMetrics = DisplayMetrics()
d.getMetrics(displayMetrics)
val displayHeight = displayMetrics.heightPixels
val displayWidth = displayMetrics.widthPixels
// 部分无良厂商的手势操作,显示高度 + 导航栏高度,竟然大于物理高度,对于这种情况,直接默认未启用导航栏
if (displayHeight + getNavigationBarHeight(context) > realHeight) return false
return realWidth - displayWidth > 0 || realHeight - displayHeight > 0
}
}
RomUtils
object RomUtils {
private const val TAG = "RomUtils--->"
/**
* 获取 emui 版本号
*/
@JvmStatic
fun getEmuiVersion(): Double {
try {
val emuiVersion = getSystemProperty("ro.build.version.emui")
val version = emuiVersion!!.substring(emuiVersion.indexOf("_") + 1)
return version.toDouble()
} catch (e: Exception) {
e.printStackTrace()
}
return 4.0
}
@JvmStatic
fun getSystemProperty(propName: String): String? {
val line: String
var input: BufferedReader? = null
try {
val p = Runtime.getRuntime().exec("getprop $propName")
input = BufferedReader(InputStreamReader(p.inputStream), 1024)
line = input.readLine()
input.close()
} catch (ex: Exception) {
Log.e(TAG, "Unable to read sysprop $propName", ex)
return null
} finally {
if (input != null) {
try {
input.close()
} catch (e: IOException) {
Log.e(TAG, "Exception while closing InputStream", e)
}
}
}
return line
}
fun checkIsHuaweiRom() = Build.MANUFACTURER.contains("HUAWEI")
fun checkIsMiuiRom() = !TextUtils.isEmpty(getSystemProperty("ro.miui.ui.version.name"))
fun checkIsMeizuRom(): Boolean {
val systemProperty = getSystemProperty("ro.build.display.id")
return if (TextUtils.isEmpty(systemProperty)) false
else systemProperty!!.contains("flyme") || systemProperty.toLowerCase().contains("flyme")
}
fun checkIs360Rom(): Boolean =
Build.MANUFACTURER.contains("QiKU") || Build.MANUFACTURER.contains("360")
fun checkIsOppoRom() =
Build.MANUFACTURER.contains("OPPO") || Build.MANUFACTURER.contains("oppo")
fun checkIsVivoRom() =
Build.MANUFACTURER.contains("VIVO") || Build.MANUFACTURER.contains("vivo")
}
依赖关系:DisplayUtils 以来RomUtils
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