Android-获取屏幕高度、宽度、像素密度

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

/**
 * 获取屏幕宽度 高度 像素密度
 */
public class DisPlayUtil {
//    获取屏幕宽度
    public static int getScreenWidth(Context context) {
        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics displayMetrics = new DisplayMetrics();
        windowManager.getDefaultDisplay().getMetrics(displayMetrics);
        return displayMetrics.widthPixels;
    }
//      获取屏幕高度
    public static int getScreenHeight(Context context) {
        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics displayMetrics = new DisplayMetrics();
        windowManager.getDefaultDisplay().getMetrics(displayMetrics);
        return displayMetrics.heightPixels;
    }
//  获取屏幕像素密度
    public static float getScreenDensity(Context context) {
        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics displayMetrics = new DisplayMetrics();
        windowManager.getDefaultDisplay().getMetrics(displayMetrics);
        return displayMetrics.density;
    }
}