Android 弹出窗体

    findViewById(R.id.btn).setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				LayoutInflater layoutInflater=activity.getLayoutInflater();
				View view=layoutInflater.inflate(android.R.layout.simple_list_item_1,null);
				PopupWindow pw=new PopupWindow(view,100,100);
				pw.setBackgroundDrawable(activity.getResources().getDrawable(R.drawable.ic_launcher));
				pw.setOutsideTouchable(true);
				pw.showAtLocation(activity.getWindow().getDecorView(), Gravity.CENTER, 0, 0);
			}
		});

当然你也可以将自己的控件放入窗体中.