Android屏幕分辨率工具类使用详解

package com.per.loadingwebviewdome;

import android.content.Context;
import android.util.DisplayMetrics;

import java.lang.reflect.Field;

/**
 * @author: xiaolijuan
 * @description: 屏幕分辨率工具类
 * @date: 2016-06-05
 * @time: 22:55
 */
public class ScreenUtil {
 /**
 * 根据手机分辨率将dp转为px单位
 */
 public static int dip2px(Context mContext, float dpValue) {
 final float scale = mContext.getResources()
  .getDisplayMetrics().density;
 return (int) (dpValue * scale + 0.5f);
 }

 /**
 * 根据手机的分辨率从 px(像素) 的单位 转成为 dp
 */
 public static int px2dip(Context mContext, float pxValue) {
 final float scale = mContext.getResources()
  .getDisplayMetrics().density;
 return (int) (pxValue / scale + 0.5f);
 }

 /**
 * 屏幕宽高
 *
 * @param mContext 上下文
 * @return
 */
 private static int[] getScreenSize(Context mContext) {
 DisplayMetrics dm = mContext
  .getResources().getDisplayMetrics();
 int screenWidth = dm.widthPixels;
 int screenHeight = dm.heightPixels;

 return new int[]{screenWidth, screenHeight};
 }

 /**
 * 获取状态栏高度
 *
 * @param mContext 上下文
 * @return
 */
 public static int getStatusBarHeight(Context mContext) {
 Class<?> c = null;
 Object obj = null;
 Field field = null;
 int x = 0, statusBarHeight = 0;
 try {
  c = Class.forName("com.android.internal.R$dimen");
  obj = c.newInstance();
  field = c.getField("status_bar_height");
  x = Integer.parseInt(field.get(obj).toString());
  statusBarHeight = mContext.getResources().getDimensionPixelSize(x);
 } catch (Exception e1) {
  e1.printStackTrace();
 }
 return statusBarHeight;
 }

 /**
 * 获取手机屏幕的宽度
 *
 * @param mContext 上下文
 * @return
 */
 public static int getScreenWidth(Context mContext) {
 int screen[] = getScreenSize(mContext);
 return screen[0];
 }

 /**
 * 获取手机屏幕的高度
 *
 * @param mContext 上下文
 * @return
 */
 public static int getScreenHeight(Context mContext) {
 int screen[] = getScreenSize(mContext);
 return screen[1];
 }
}

Log.e("获取状态栏高度", String.valueOf(ScreenUtil.getStatusBarHeight(mContext)));
 Log.e("获取手机屏幕的宽度", String.valueOf(ScreenUtil.getScreenWidth(mContext)));
 Log.e("获取手机屏幕的高度", String.valueOf(ScreenUtil.getScreenHeight(mContext)));