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package com.hand.face.utils;
import android.content.Context;
import android.graphics.Point;
import android.util.DisplayMetrics;
import android.util.Log;
/**
* Created by USER on 2016/12/10.
*/
public class DisplayUtil {
private static final String TAG = "DisplayUtil";
/**
* dip转px
* @param context
* @param dipValue
* @return
*/
public static int dip2px(Context context, float dipValue){
final float scale = context.getResources().getDisplayMetrics().density;
return (int)(dipValue * scale + 0.5f);
}
/**
* px转dip
* @param context
* @param pxValue
* @return
*/
public static int px2dip(Context context, float pxValue){
final float scale = context.getResources().getDisplayMetrics().density;
return (int)(pxValue / scale + 0.5f);
}
/**
* 获取屏幕宽度和高度,单位为px
* @param context
* @return
*/
public static Point getScreenMetrics(Context context){
DisplayMetrics dm =context.getResources().getDisplayMetrics();
int w_screen = dm.widthPixels;
int h_screen = dm.heightPixels;
Log.i(TAG, "Screen---Width = " + w_screen + " Height = " + h_screen + " densityDpi = " + dm.densityDpi);
return new Point(w_screen, h_screen);
}
/**
* 获取屏幕长宽比
* @param context
* @return
*/
public static float getScreenRate(Context context){
Point P = getScreenMetrics(context);
float H = P.y;
float W = P.x;
return (H/W);
}
}