学步园

在AndroidManifest.xml文件中<activity >标签中加入android:screenOrientation="portrait"

主活动类的java代码

public class popup extends Activity {<br /> /** Called when the activity is first created. */<br /> @Override<br /> public void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.main);<br /> findviews();<br /> setlisteners();<br /> }<br /> private Button et;<br /> private boolean b=true;<br /> private static PopupWindow pw;<br /> private TextView tv;<br /> void findviews()<br /> {<br /> et=(Button)findViewById(R.id.btnSpw);<br /> tv=(TextView)findViewById(R.id.tv);<br /> }<br /> void setlisteners()<br /> {<br /> //et.setOnKeyListener(et_keyDown);<br /> et.setOnClickListener(btnspw_click);<br /> //(4.toString())<br /> //Byte.p<br /> }<br /> View.OnClickListener btnspw_click=new View.OnClickListener()<br /> {<br /> @Override<br /> public void onClick(View v) {<br /> int flag=getRequestedOrientation();<br /> // TODO Auto-generated method stub<br /> if(flag ==-1)<br /> {<br /> // b=!b;<br /> //showPopupWindow(popup.this, findViewById(R.id.btnSpw));<br /> tv.setText("fail");<br /> }<br /> else {<br /> //b=!b;<br /> //pw.dismiss();<br /> if(flag==ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE)<br /> setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);<br /> else setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);<br /> }<br /> }<br /> };<br /> }

final Display defaultdis=getWindow().getWindowManager().getDefaultDisplay();
                int w=defaultdis.getWidth();
                int h=defaultdis.getHeight();

if(w>h)说明 当前是横屏