Android 获取屏幕的宽高三种方式

1.通过WindowManager获取

  private DisplayMetrics dm;//屏幕分辨率容器
     dm = new DisplayMetrics();
     this.getWindowManager().getDefaultDisplay().getMetrics(dm);
     int width = dm.widthPixels;
     int height = dm.heightPixels;

2.通过Resources获取

 DisplayMetrics dm = getResources().getDisplayMetrics();
 int width = dm.widthPixels;
 int height= dm.heightPixels;

3.获取屏幕的默认分辨率

Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();