如何动态获取屏幕方向
我们知道 android在屏幕旋转以后，有些情况会销毁当前的Activity. 也就是说从新启动个Activity. 然后 跑onCreate()??onStart()等流程．
还有中情况是 屏幕旋转后，不从新启动这个Activity. 只做些动作．
第一中情况是正常情况的流程． 第二中情况是你在manifest.xml里注册了android:config后的动作，你告诉了喜欢，当哪写配置改变后会做什么．
那如何动态检测当前屏幕方向及大小呢？
public class orientation extends Activity {
????TextView textview=null;
????/** Called when the activity is first created. */
????@Override
????public void onCreate(Bundle savedInstanceState) {
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.main);
????????textview=(TextView)findViewById(R.id.textview);
????????int screenwidth=getWindowManager().getDefaultDisplay().getWidth();
???????? ????int screenheight=getWindochanger codewManager().getDefaultDisplay().getHeight();
???????? ????Log.d("orient", "now the screen width is :"+screenwidth+"screen height is:"+screenheight);
????????int orient=getRequestedOrientation();
????????if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE)
????????{
????????????Log.d("orient", "now the screen orient is landscape");
????????}
????????else if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT)
????????{
????????Log.d("orient", "now the screen orient is portrait");
????????}
????}
}
哎，这样就很明显了，问题的根源是配置改变，那就找配置信息．getResources().getConfiguration即可获得当前配置对象．
这样读就可以了．
当然getWindowManager().getDefaultDisplay().getHeight() getWidth()就获得了高度，宽度．获得值会随屏幕方向改变而改变．
