Android——屏幕工具类，获取屏幕宽高，状态栏高度

public class ScreenUtil { public static int height; public static int width; private static ScreenUtil instance; private Context context; private ScreenUtil(Context context) { this.context = context; WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); manager.getDefaultDisplay().getMetrics(dm); width = dm.widthPixels; height = dm.heightPixels; } public static ScreenUtil getInstance(Context context) { if (instance == null) { instance = new ScreenUtil(context); } return instance; } /** * 得到手机屏幕的宽度, pix单位 */ /** * 获得通知栏的高度 * @return */ public static int getStatusHeight(Context context){ int resid = context.getResources().getIdentifier("status_bar_height", "dimen", "android"); if(resid > 0){ return context.getResources().getDimensionPixelSize(resid); } return -1; } /** * 得到手机屏幕的宽度, pix单位 */ public int getScreenWidth() { return width; } //获取屏幕的宽度 public static int getScreenWidth(Context context) { WindowManager manager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); Display display = manager.getDefaultDisplay(); return display.getWidth(); } //获取屏幕的高度 public static int getScreenHeight(Context context) { WindowManager manager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); Display display = manager.getDefaultDisplay(); return display.getHeight(); } //px转dp public static int dp2px(Context context,float dp) { return (int) (dp * context.getResources().getDisplayMetrics().density + 0.5f); } }