功能分类：影音
支持平台：Android
运行环境：Android
开发语言：Java
开发工具：Eclipse
源码大小：7.88M
源码简介
学习使用的音乐播放器，登陆密码是123,。
源码运行截图
登陆
音乐列表显示
播放界面
收藏界面
源码片段
复制
package com.xue.Mp3Player; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.ExpandableListActivity; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.os.AsyncTask; import android.os.Bundle; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseExpandableListAdapter; import android.widget.ExpandableListView; import android.widget.ImageButton; import android.widget.TextView; import android.widget.Toast; import com.xue.Mp3Player.R; import com.xue.Mp3Player.Utils.DataUtils; import com.xue.Mp3Player.Utils.MyApplication; import com.xue.Mp3Player.Utils.PlayUtils; public class MyMusicListActivity extends ExpandableListActivity { private ExpandableListView myMusicListView; private ArrayList<hashmap<string, object="">> groupsList; private List<list<hashmap<string, object="">>> childsList; public static MyMusicListAdapter listAdapter; private static Context context; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.mymusic_list_layout); myMusicListView = getExpandableListView(); context = this; groupsList = new ArrayList<hashmap<string, object="">>(); HashMap<string, object=""> group1 = new HashMap<string, object="">(); group1.put("name", "旧城"); HashMap<string, object=""> group2 = new HashMap<string, object="">(); group2.put("name", "旧梦"); HashMap<string, object=""> group3 = new HashMap<string, object="">(); group3.put("name", "旧人");//设置收藏类别 groupsList.add(group1); groupsList.add(group2); groupsList.add(group3); childsList = new ArrayList<list<hashmap<string, object="">>>(); childsList.add(MyApplication.getHappyMusicList()); childsList.add(MyApplication.getQuietMusicList()); childsList.add(MyApplication.getSadMusicList()); listAdapter = new MyMusicListAdapter(this, groupsList, childsList); myMusicListView.setAdapter(listAdapter); } public static Context getContext(){ return context; } @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { HashMap<string, object=""> map = childsList.get(groupPosition).get(childPosition); if (map.get("name").equals(PlayService.name) && MyApplication.playStatus == 1) { Toast.makeText(context, "正在播放...", 0).show(); }else { boolean b = PlayUtils.addMusicToList(context, map, MyApplication.getPlayMusicList()); if (b) { PlayMusicListActivity.myListAdapter.notifyDataSetChanged(); PlayUtils.turnToPlay(map, context); } } return super.onChildClick(parent, v, groupPosition, childPosition, id); } public boolean onKeyDown(int keyCode, android.view.KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) { backDialog(); } return false; }; @Override protected void onDestroy() { DataUtils.upData_allLists(); super.onDestroy(); } public void backDialog() { AlertDialog.Builder builder = new Builder(this); builder.setMessage("确认退出吗？"); builder.setTitle("提示"); builder.setPositiveButton("确认", new OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); ((Activity) context).finish(); new AsyncTask<void, void,="" void="">(){ @Override protected Void doInBackground(Void... params) { if (MyApplication.playStatus != 0) { PlayService.stop(); // PlayService.player.release(); } DataUtils.upData_allLists(); return null; } }.execute(); } }); builder.setNegativeButton("取消", new OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); builder.create().show(); } class MyMusicListAdapter extends BaseExpandableListAdapter { private Context context; private List<hashmap<string, object="">> groups; private List<list<hashmap<string, object="">>> childs; private childViewsHolder childHolder; private GroupViewsHolder groupHolder; public MyMusicListAdapter(Context context, List<hashmap<string, object="">> groups, List<list<hashmap<string, object="">>> childs) { this.context = context; this.groups = groups; this.childs = childs; } private class childViewsHolder { TextView childText; ImageButton childButton; } public Object getChild(int arg0, int arg1) { return childs.get(arg0).get(arg1); } public long getChildId(int groupPosition, int childPosition) { return childPosition; } public void removeChildItem(int groupPosition, int childPosition) { childs.get(groupPosition).remove(childPosition); this.notifyDataSetChanged(); } public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { if (convertView != null) { childHolder = (childViewsHolder) convertView.getTag(); } else { childHolder = new childViewsHolder(); LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); convertView = inflater.inflate(R.layout.mymusic_childs_layout, null); childHolder.childText = (TextView) convertView.findViewById(R.id.text_childItem); childHolder.childButton = (ImageButton) convertView.findViewById(R.id.button_deleteChildItem); convertView.setTag(childHolder); } HashMap<string, object=""> childItem = childs.get(groupPosition).get(childPosition); if (childItem != null) { String name = (String) childItem.get("name"); childHolder.childText.setText(name); childHolder.childButton.setOnClickListener(new childItemOnClick(groupPosition, childPosition)); } return convertView; } public class childItemOnClick implements android.view.View.OnClickListener { private int groupPosition; private int childPosition; public childItemOnClick(int groupPosition, int childposition) { this.groupPosition = groupPosition; this.childPosition = childposition; } public void onClick(View v) { removeChildItem(groupPosition, childPosition); } } public int getChildrenCount(int groupPosition) { return childs.get(groupPosition).size(); } public Object getGroup(int groupPosition) { return groups.get(groupPosition); } public int getGroupCount() { return groups.size(); } public long getGroupId(int groupPosition) { return groupPosition; } private class GroupViewsHolder { TextView groupText; ImageButton groupButton; } public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { if (convertView != null) { groupHolder = (GroupViewsHolder) convertView.getTag(); } else { groupHolder = new GroupViewsHolder(); LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); convertView = inflater.inflate(R.layout.mymusic_groups_layout, null); groupHolder.groupText = (TextView) convertView.findViewById(R.id.text_groupItem); groupHolder.groupButton = (ImageButton) convertView.findViewById(R.id.button_playAll); convertView.setTag(groupHolder); } HashMap<string, object=""> map = groups.get(groupPosition); if (map != null) { String name = (String) map.get("name"); groupHolder.groupText.setText(name); groupHolder.groupButton.setOnClickListener(new GroupOnClick(groupPosition)); } return convertView; } class GroupOnClick implements View.OnClickListener { private int position; public GroupOnClick(int position) { this.position = position; } public void onClick(View v) { switch (position) { case 0: PlayUtils.turnToPlay_List(context, MyApplication.getHappyMusicList()); break; case 1: PlayUtils.turnToPlay_List(context, MyApplication.getQuietMusicList()); break; case 2: PlayUtils.turnToPlay_List(context, MyApplication.getSadMusicList()); break; default: break; } } } public boolean hasStableIds() { // TODO Auto-generated method stub return false; } public boolean isChildSelectable(int groupPosition, int childPosition) { // TODO Auto-generated method stub return true; } } } </string,></string,></list<hashmap<string,></hashmap<string,></list<hashmap<string,></hashmap<string,></void,></string,></list<hashmap<string,></string,></string,></string,></string,></string,></string,></hashmap<string,></list<hashmap<string,></hashmap<string,>
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