java Android中dp和px互相转换

Posted 2021-05-08

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

public class DP {

    public static int dp2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }

    public static int px2dp(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * 获取屏幕宽度
     */
    public static int screenWidth(Context context) {
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        return dm.widthPixels;
    }

    /**
     * 获取屏幕高度
     */
    public static int screenHeight(Context context) {
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        return dm.heightPixels;
    }
}