public class ShowPopupWindow extends Activity implements View.OnClickListener {View view;PopupWindow pop;Button btnShowAsDrawDown;Button btnShowAsDrawDown1;Button btnShowAtLocation;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.popup_activity);btnShowAsDrawDown = (Button) findViewById(R.id.btnShowAsDrawDown);btnShowAsDrawDown.setOnClickListener(this);btnShowAsDrawDown1 = (Button) findViewById(R.id.btnShowAsDrawDown1);btnShowAsDrawDown1.setOnClickListener(this);btnShowAtLocation = (Button) findViewById(R.id.btnShowAt);btnShowAtLocation.setOnClickListener(this);initPopupWindow();}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.btnShowAsDrawDown:if (pop.isShowing()) {pop.dismiss();} else {pop.showAsDropDown(v);}break;case R.id.btnShowAsDrawDown1:if (pop.isShowing()) {pop.dismiss();} else {pop.showAsDropDown(v, 0, -160);}break;default:if (pop.isShowing()) {pop.dismiss();} else {pop.showAtLocation(findViewById(R.id.main),Gravity.CENTER_HORIZONTAL, 0, 0);}break;}}private void initPopupWindow() {view = this.getLayoutInflater().inflate(R.layout.popup_window, null);pop = new PopupWindow(view, ViewGroup.LayoutParams.FILL_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);pop.setOutsideTouchable(true);view.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubpop.dismiss();}});}}
，可是，我却迈不开步伐，怎么也走不出那个圈……
