SystemBarUtil 工具类

SystemBarUtil 工具类

工具类，提供了系统栏高度和屏幕宽高获取方法

import android.app.Activity
import android.content.Context
import android.graphics.Point
import android.os.Build
import android.view.View
import android.view.ViewGroup
import android.view.WindowManager

/**
* 工具类，提供了系统栏高度和屏幕宽高获取方法
*/
object SystemBarUtil {

    /**
     * 获取状态栏高度
     */
    @JvmStatic
    fun getStatusBarHeight(context: Context): Int {
        var height = 0
        try {
            val resourceId = context.applicationContext.resources.getIdentifier(
                "status_bar_height",
                "dimen",
                "android"
            )
            if (resourceId > 0) {
                height =
                    context.applicationContext.resources.getDimensionPixelSize(resourceId)
            }
        } catch (e: Exception) {
        }
        return height
    }

    /**
     * 获取系统导航栏高度
     */
    @JvmStatic
    fun getNavigationBarHeight(context: Context): Int {
        var height = 0
        try {
            val resourceId = context.applicationContext.resources.getIdentifier(
                "navigation_bar_height",
                "dimen",
                "android"
            )
            if (resourceId > 0) {
                height =
                    context.applicationContext.resources.getDimensionPixelSize(resourceId)
            }
        } catch (e: Exception) {
        }
        return height
    }

    private const val NAVIGATION = "navigationBarBackground"

    // 该方法需要在View完全被绘制出来之后调用
    @JvmStatic
    private fun isNavigationBarVisible(activity: Activity): Boolean {
        val vp = activity.window.decorView as ViewGroup?
        if (vp != null) {
            for (i in 0 until vp.childCount) {
                vp.getChildAt(i).context.packageName
                if (vp.getChildAt(i).id !== View.NO_ID &&
                    NAVIGATION == activity.resources.getResourceEntryName(vp.getChildAt(i).id)
                ) {
                    return true
                }
            }
        }
        return false
    }

    /**
     * 获取屏幕的物理大小 px
     */
    @JvmStatic
    fun getDeviceScreenSize(context: Context): Point {
        val appContext = context.applicationContext
        val wm = appContext.getSystemService(Context.WINDOW_SERVICE) as WindowManager
        val point = Point(0, 0)
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            wm.defaultDisplay.getRealSize(point)
        } else {
            wm.defaultDisplay.getSize(point)
        }
        return point
    }

    /**
     * 获取显示屏幕的宽高 px
     */
    @JvmStatic
    fun getDisplaySize(context: Context): Point {
        val point = Point(0, 0)
        val dm = context.applicationContext.resources.displayMetrics
        point.x = dm.widthPixels
        point.y = dm.heightPixels
        return point
    }
}