小程序源码 多级PopupWindow的小demo.zip

package com.android.tutor; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup.LayoutParams; import android.widget.Button; import android.widget.ImageButton; import android.widget.PopupWindow; import android.widget.TextView; import android.widget.Toast; public class PopupWindowDemo extends Activity{ ImageButton img; TextView tv; PopupWindow mPopupWindow; Button bt; String str=""; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); bt=(Button)findViewById(R.id.bt); bt.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub showPopupWindow(); } }); } public void showPopupWindow() { Context mContext = PopupWindowDemo.this; LayoutInflater mLayoutInflater = (LayoutInflater) mContext .getSystemService(LAYOUT_INFLATER_SERVICE); View music_popunwindwow = mLayoutInflater.inflate( R.layout.music_popwindow, null); mPopupWindow= new PopupWindow(music_popunwindwow, LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT); mPopupWindow.showAtLocation(findViewById(R.id.main), Gravity.CENTER, 0, 0); img=(ImageButton)music_popunwindwow.findViewById(R.id.control_play); img.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { secondPop(); } }); } public void secondPop() { Context mContext = PopupWindowDemo.this; LayoutInflater mLayoutInflater = (LayoutInflater) mContext .getSystemService(LAYOUT_INFLATER_SERVICE); View second= mLayoutInflater.inflate( R.layout.secondpopwindow, null); PopupWindow mPopupWindow= new PopupWindow(second, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); mPopupWindow.showAtLocation(findViewById(R.id.main), Gravity.CENTER, 0, 50); ImageButton img1=(ImageButton)second.findViewById(R.id.control_play); img1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(PopupWindowDemo.this, "second", Toast.LENGTH_LONG).show(); } }); } }