获得屏幕像素以及像素密度

1 public void click(View view) {
2         String TAG = "";
3         WindowManager windowManager = getWindowManager();
4         DisplayMetrics displayMetrics = new DisplayMetrics();
5         windowManager.getDefaultDisplay().getMetrics(displayMetrics);
6         Log.e(TAG, "width:" + displayMetrics.widthPixels);
7         Log.e(TAG, "height:" + displayMetrics.heightPixels);
8         Log.e(TAG, "density:" + displayMetrics.density);
9     }