安卓错误求教大家

package com.tarena.fashionmusic.main;import java.io.File;
import java.util.ArrayList;
import java.util.List;import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.app.DownloadManager;
import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.ExpandableListContextMenuInfo;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewFlipper;import com.tarena.fashionmusic.MyApplication;
import com.tarena.fashionmusic.R;
import com.tarena.fashionmusic.db.MusicGroupDao;
import com.tarena.fashionmusic.db.MusicItemDao;
import com.tarena.fashionmusic.entry.Music;
import com.tarena.fashionmusic.entry.MusicGroup;
import com.tarena.fashionmusic.entry.MusicItem;
import com.tarena.fashionmusic.entry.impl.Musicdata;
import com.tarena.fashionmusic.main.adapter.MyPagerAdapter;
import com.tarena.fashionmusic.play.MusicPlayActivity;
import com.tarena.fashionmusic.service.DownloadService;
import com.tarena.fashionmusic.service.DownloadService.MyBinder;
import com.tarena.fashionmusic.service.MusicPlayerService;
import com.tarena.fashionmusic.util.BitmapTool;
import com.tarena.fashionmusic.util.Constant;
import com.tarena.fashionmusic.util.StrTime;public class MainActivity extends Activity implements OnClickListener { // ------------基本控件--------------------------------
ViewPager viewPager;
Context context;
ImageButton btprevious, btplay, btnext, handler_icon;
Button btnet, btlocal, btfav;
ImageView list_show_album, move2group;
TextView tvsongname, tvdurction;
ProgressBar progressBar;
ProgressDialog progressDialog;
// ------------------------------------------------
List<View> views;
LayoutInflater inflater;
MyPagerAdapter pagerAdapter;
File dir;
int position;
Bitmap nowbitmap = null;
MusicReciver myReciver;
refreshReciver reciver;
ViewFlipper viewFlipper;
MusicGroupDao groupDao;
public static final int MENU_UPDATE_GROUP = 1;
public static final int MENU_DELETE_GROUP = 2;
public static final int MENU_ADD_GROUP = 3;
public static final int MENU_CLEAR_GROUP = 4; public static final int MENU_CHI_PLAY_ONE = 5;
public static final int MENU_CHI_PLAYALL = 6;
public static final int MENU_CHI_REMOVE = 7; public static final int MENU_DOWN_MUSIC = 8;
public static final int MENU_LISTEN_MUSIC = 9; private class refreshReciver extends BroadcastReceiver { @Override
public void onReceive(Context arg0, Intent intent) {
if (Intent.ACTION_MEDIA_SCANNER_FINISHED.equals(intent.getAction())) {
// 获取媒体库信息
ArrayList<Music> musics = Musicdata.getMultiDatas(context);
// 更新listview
MyApplication.getInstance().setMusics(musics);
localLayout.Refresh(LocalLayout.CHANGE_LIST, musics);
progressDialog.cancel();
context.sendBroadcast(new Intent(Constant.ACTION_LISTCHANGED));
} else if (Intent.ACTION_MEDIA_SCANNER_STARTED.equals(intent
.getAction())) {
// 显示对话框
progressDialog = new ProgressDialog(context);
progressDialog.setMessage("列表正在刷新中,请等待......");
progressDialog.show();
}
} } int totalms = 1;
int curms = 1; private class MusicReciver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// 更新时间进度
if (intent.getAction().equals(Constant.ACTION_UPDATE)) {
Music music = (Music) intent.getSerializableExtra("music");
totalms = intent.getIntExtra("totalms", 288888);// 总时长
int status = intent.getIntExtra("status", -1);
try {
String musicname = music.getMusicName();
tvdurction.setText("00:00/"
+ StrTime.getTime(music.getTime()));
tvsongname.setText(musicname);
if (intent.getBooleanExtra("isnet", false)) {
nowbitmap = MyApplication.bitmap_s;
} else {
String albumkey = music.getAlbumkey();
if (albumkey != null && !albumkey.equals("")) {
nowbitmap = BitmapTool.getbitBmBykey(context,
music.getAlbumkey());
} else {
nowbitmap = MyApplication.bitmap_s;
}
}
if (nowbitmap != null && !nowbitmap.isRecycled()) {
list_show_album.setImageBitmap(nowbitmap);
} else {
list_show_album
.setImageResource(R.drawable.default_bg_s);
}
if (status == 3) {
btplay.setImageResource(R.drawable.desktop_pausebt);
isplaying = true;
} else {
btplay.setImageResource(R.drawable.desktop_playbt);
isplaying = false;
}
} catch (Exception e) {
e.printStackTrace();
}
} else if (intent.getAction().equals(Constant.ACTION_DISS_DIALOG)) {
if (progressDialog != null) {
progressDialog.cancel();
}
} } } boolean isrunable = true; class myrunabe extends Thread {
@Override
public void run() {
while (isrunable) {
if (MyApplication.mediaPlayer != null
&& MyApplication.mediaPlayer.isPlaying()) {
curms = MyApplication.mediaPlayer.getCurrentPosition();
handler.sendEmptyMessage(20);
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
} Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 10:
favoriteLayout.Refresh(FavoriteLayout.REFRESH_GROUP);
viewFlipper.showPrevious();
localLayout.Refresh(LocalLayout.SINGLE_CHOSE);
break;
case 20:
int progress = curms * 100 / totalms;
// 设置当前进度
progressBar.setProgress(progress);
tvdurction.setText(StrTime.gettim(curms) + "/"
+ StrTime.gettim(totalms));
break;
}
} }; private MyBinder binder;
// 绑定和解绑service时的回调对象conn
private ServiceConnection conn = new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName name) {
binder = null;
} @Override
public void onServiceConnected(ComponentName name, IBinder service) {
binder = (MyBinder) service;
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
// getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
// WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
MyApplication.getInstance().addActivity(this);
context = this;
inflater = LayoutInflater.from(this);
// 获取上次退出时的播放位置
initView();
startService(new Intent(context, MusicPlayerService.class));
// 启动service
Intent intent = new Intent(this, DownloadService.class);
startService(intent);
this.getApplicationContext()
.bindService(intent, conn, BIND_AUTO_CREATE);
// 创建音乐目录
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
File root = Environment.getExternalStorageDirectory();
dir = new File(root, "TMusic");
if (!dir.exists()) {
dir.mkdir();
}
}
myReciver = new MusicReciver();
reciver = new refreshReciver();
groupDao = new MusicGroupDao(context);
} @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (localLayout.localistview.getChoiceMode() == ListView.CHOICE_MODE_MULTIPLE) {
localLayout.Refresh(LocalLayout.SINGLE_CHOSE);
localLayout.localistview
.setChoiceMode(ListView.CHOICE_MODE_NONE);
viewFlipper.showPrevious();
return false;
} else {
return super.onKeyDown(keyCode, event);
}
}
return super.onKeyDown(keyCode, event);
} NetLayout netLayout;
LocalLayout localLayout;
FavoriteLayout favoriteLayout; private void initView() {
/* 中间部分view page视图容器 */
viewPager = (ViewPager) findViewById(R.id.center_body_view_pager);
views = new ArrayList<View>();
netLayout = new NetLayout(context);
localLayout = new LocalLayout(context, handler);
favoriteLayout = new FavoriteLayout(context);
views.add(netLayout);
views.add(localLayout);
views.add(favoriteLayout); /* 顶部的三个导航按钮 */
btnet = (Button) findViewById(R.id.main_top_bt1);
btlocal = (Button) findViewById(R.id.main_top_btn);
btfav = (Button) findViewById(R.id.main_top_bt2);
/* 底部的播放界面切换按钮 */
handler_icon = (ImageButton) findViewById(R.id.main_handler_icon);
/* 底部现实专辑图片 */
list_show_album = (ImageView) findViewById(R.id.list_show_album);
/* 下面三个是控制按钮 */
btprevious = (ImageButton) findViewById(R.id.btnPrevious_player);
btplay = (ImageButton) findViewById(R.id.btnPlay_player);
btnext = (ImageButton) findViewById(R.id.btnNext_player);
/* 下面三个分部是用来现实当前歌曲的名称歌手名称时长 */
tvsongname = (TextView) findViewById(R.id.list_song_name);
tvdurction = (TextView) findViewById(R.id.list_song_durction);
/* 进度条 */
progressBar = (ProgressBar) findViewById(R.id.progressBar1); viewFlipper = (ViewFlipper) findViewById(R.id.myfliper);
move2group = (ImageView) findViewById(R.id.move_to_group);
/* 设置按钮的事件监听 */
btnet.setOnClickListener(this);
btlocal.setOnClickListener(this);
btfav.setOnClickListener(this);
btprevious.setOnClickListener(this);
btplay.setOnClickListener(this);
btnext.setOnClickListener(this);
handler_icon.setOnClickListener(this);
move2group.setOnClickListener(this); registerForContextMenu(favoriteLayout.exgroupview);
registerForContextMenu(netLayout.netlistview); } @Override
protected void onStart() {
super.onStart();
// 启动的时候更新页面当前播放信息
sendBroadcast(new Intent(Constant.ACTION_UPDATE_ALL));
position = MyApplication.musicPreference.getsaveposition(context);
ShowNowPlayMusic();
} public void ShowNowPlayMusic() {
Music music = MyApplication.musics.get(position);
if (music != null) {
nowbitmap = BitmapTool.getbitBmBykey(context, music.getAlbumkey());
if (nowbitmap != null && nowbitmap.isRecycled() == false) {
list_show_album.setImageBitmap(nowbitmap);
} else {
list_show_album.setImageResource(R.drawable.default_bg_s);
}
tvsongname.setText(music.getMusicName());
tvdurction.setText("00:00/" + StrTime.getTime(music.getTime()));
}
} Thread myThread; @Override
protected void onResume() {
super.onResume();
initpagedata();
IntentFilter filter = new IntentFilter();
filter.addAction(Constant.ACTION_UPDATE);
filter.addAction(Constant.ACTION_DISS_DIALOG);
filter.addAction(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
registerReceiver(myReciver, filter); IntentFilter filter2 = new IntentFilter();
filter2.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
filter2.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
filter2.addDataScheme("file");
registerReceiver(reciver, filter2);
isrunable = true;
// 启动更新进度条的线程
myThread = new myrunabe();
myThread.start();
} @Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) { switch (v.getId()) {
case R.id.elvGroup:
ExpandableListContextMenuInfo info = (ExpandableListContextMenuInfo) menuInfo;
long packedPosition = info.packedPosition;
menu.setHeaderIcon(R.drawable.menu_info).setHeaderTitle("菜单操作");
int type = ExpandableListView.getPackedPositionType(packedPosition);
if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
menu.add(0, MENU_CHI_PLAY_ONE, 1, "播放该音乐");
menu.add(0, MENU_CHI_REMOVE, 1, "移除此项");
} else {
menu.add(0, MENU_ADD_GROUP, 2, "添加分组");
menu.add(0, MENU_DELETE_GROUP, 3, "删除分组");
menu.add(0, MENU_UPDATE_GROUP, 4, "更新分组名");
menu.add(0, MENU_CLEAR_GROUP, 3, "清空分组");
}
menu.add(0, MENU_CHI_PLAYALL, 1, "播放分组");
break;
case R.id.lvSounds:
menu.setHeaderIcon(R.drawable.menu_info).setHeaderTitle("选择操作");
menu.add(1, MENU_DOWN_MUSIC, 0, "下载音乐");
menu.add(1, MENU_LISTEN_MUSIC, 1, "播放音乐");
break;
}
super.onCreateContextMenu(menu, v, menuInfo);
} @Override
protected void onStop() {
isrunable = false;
super.onStop();
} private void DownMusic(Music music) {
// 创建新的下载任务
music.setSavePath(dir.getAbsolutePath()
+ music.getMusicPath().substring(
music.getMusicPath().lastIndexOf("/")));
// 通过binder对象，向service的任务队列添加新任务
binder.addTask(music);
} @Override
public boolean onContextItemSelected(MenuItem item) {
if (item.getGroupId() == 1) {// 远程音乐
AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) item
.getMenuInfo();
final Music music = (Music) netLayout.netlistview.getAdapter()
.getItem(menuInfo.position);
switch (item.getItemId()) {
case MENU_DOWN_MUSIC:
netLayout.Refresh(NetLayout.DOWN_MUSIC, menuInfo.position);
if (!music.isLoaded()) {
DownMusic(music);
} else {
AlertDialog.Builder builder = new Builder(context);
builder.setTitle("注意")
.setMessage("音乐已经存在确认要重复下载吗?")
.setPositiveButton("确定",
new DialogInterface.OnClickListener() {
@Override
public void onClick(
DialogInterface dialog,
int which) {
DownMusic(music);
}
}).setNegativeButton("取消", null).create()
.show();
}
break;
case MENU_LISTEN_MUSIC:
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("音乐正在缓冲中,请等待......");
progressDialog.show();
Intent intent = new Intent(Constant.ACTION_NET_PLAY);
intent.putExtra("net_music", music);
sendBroadcast(intent);
netLayout.Refresh(NetLayout.LISTEN_MUSIC, menuInfo.position);
break;
}
} else if (item.getGroupId() == 0) {
// 获得menuinfo对象
ExpandableListContextMenuInfo info = (ExpandableListContextMenuInfo) item
.getMenuInfo();
// 获得一个packedPosition
long packedPosition = info.packedPosition;
// 根据packedPosition，获取Expandablelistview中被选中项的groupPosition
// 组id
int groupPosition = ExpandableListView
.getPackedPositionGroup(packedPosition);
// childid
int childPosition = ExpandableListView
.getPackedPositionChild(packedPosition);
// 获取组对象
MusicGroup group = (MusicGroup) favoriteLayout.exgroupview
.getExpandableListAdapter().getGroup(groupPosition); MusicItemDao musicDao = new MusicItemDao(this); switch (item.getItemId()) {
case MENU_ADD_GROUP:// 添加分组
favoriteLayout.Refresh(FavoriteLayout.ADD_GROUP);
break;
case MENU_CHI_PLAY_ONE:// 播放当前选择歌曲
if (childPosition != -1) {
MusicItem musicItem = (MusicItem) favoriteLayout.exgroupview
.getExpandableListAdapter().getChild(groupPosition,
childPosition);
Intent intent = new Intent(Constant.ACTION_FIND);
String musicname = Musicdata.getMusicbyid(context,
String.valueOf(musicItem.getMusicId()))
.getMusicName();
intent.putExtra("name", musicname);
sendBroadcast(intent);
}
break;
case MENU_CHI_PLAYALL:// 播放当前分组
MyApplication.getInstance().setMusics(
Musicdata.getmusicsByitem(
musicDao.getMusicsByGroup(group.getId()),
context));
sendBroadcast(new Intent(Constant.ACTION_LISTCHANGED));
break;
case MENU_CHI_REMOVE:// 从分组中移除
if (childPosition != -1) {
// 获取musicitem对象
MusicItem musicItems = (MusicItem) favoriteLayout.exgroupview
.getExpandableListAdapter().getChild(groupPosition,
childPosition);
// 获取该musicitem的id，删除
musicDao.deleteItemById(musicItems.getId());
// 更新界面
favoriteLayout.Refresh(FavoriteLayout.REFRESH_GROUP);
}
break;
case MENU_CLEAR_GROUP:// 清空分组
musicDao.deleteItemByGroupid(group.getId());
favoriteLayout.Refresh(FavoriteLayout.REFRESH_GROUP);
break;
case MENU_DELETE_GROUP:// 删除分组
groupDao.deleteGroup(group.getId());
favoriteLayout.Refresh(FavoriteLayout.REFRESH_GROUP);
break;
case MENU_UPDATE_GROUP:// 修改分组名称
updatagroup(group.getId());
break;
}
}
return super.onContextItemSelected(item); }
谢谢，能说得再详细点么？我应该怎么修改？可能在onCreateContextMenu里吧，对list操作的都看看，调试下，list是空的你也取值了

调试易

安卓错误求教大家

解决方案 »