Android - 像素密度和屏幕适配

        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        int widthPixels= dm.widthPixels;
        int heightPixels= dm.heightPixels;
        float density = dm.density;
        float dpi = dm.densityDpi;
        float screenWidth = widthPixels * density;
        float screenHeight = heightPixels * density;

        Log.d(TAG, "屏幕宽度: " + screenWidth);
        Log.d(TAG, "屏幕高度: " + screenHeight);
        Log.d(TAG, "屏幕密度: " + density);
        Log.d(TAG, "屏幕DPI: " + dpi);

values-sw1080dp