我有一个listView充满了sdcard上的所有歌曲,我可以使用ediText或其他东西(比如SearchBar)按名称过滤它们并更新listview吗?谢谢,这就是我填写列表视图的方法:
@SuppressWarnings("deprecation")
private void init_phone_music_grid() {
System.gc();
String[] proj = { MediaStore.Audio.Media._ID,
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.DISPLAY_NAME,
MediaStore.Video.Media.SIZE };
musiccursor = managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
proj, MediaStore.Audio.Media.DURATION + ">= 120000", null, null);
count = musiccursor.getCount();
musiclist = (ListView) findViewById(R.id.listView1);
musiclist.setAdapter(new MusicAdapter(getApplicationContext()));
musiclist.setOnItemClickListener(musicgridlistener);
mMediaPlayer = new MediaPlayer();
}
private OnItemClickListener musicgridlistener = new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position,
long id) {
System.gc();
music_column_index = musiccursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
musiccursor.moveToPosition(position);
String filename = musiccursor.getString(music_column_index);
String canzone=filename.replace("/storage/sdcard0/", "");
canzone=canzone.replace("Music/", "");
canzone=canzone.replace("media/", "");
canzone=canzone.replace("Ringtones/", "");
t=(TextView) findViewById(R.id.textView2);
t.setWidth(130);
t.setSingleLine(true);
t.setText(canzone);
try {
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.reset();
}
mMediaPlayer.setDataSource(filename);
mMediaPlayer.prepare();
mMediaPlayer.start();
} catch (Exception e) {
}
}
};
public class MusicAdapter extends BaseAdapter {
private Context mContext;
public MusicAdapter(Context c) {
mContext = c;
}
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
System.gc();
String id = null;
TextView tv;
if (convertView == null) {
tv = new TextView(mContext.getApplicationContext());
} else{
tv = (TextView) convertView;
}
musiccursor.moveToPosition(position);
music_column_index = musiccursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME);
id = musiccursor.getString(music_column_index);
tv.setText(id);
return tv;
}
}
这是更新的代码:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_player);
progressBar = (ProgressBar) findViewById(R.id.progressBar1);
init_phone_music_grid(null);
//Controllo();
edittext=(EditText) findViewById(R.id.editText1);
edittext.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) { }
@Override
public void afterTextChanged(Editable arg0) {
init_phone_music_grid(edittext.getText().toString());
}
});
}
@SuppressWarnings("deprecation")
private void init_phone_music_grid(String a) {
System.gc();
String sortOrder=null;
if(a!=null){
sortOrder=MediaStore.Audio.Media.TITLE +a;
}
String[] proj = { MediaStore.Audio.Media._ID,MediaStore.Audio.Media.DATA,MediaStore.Audio.Media.DISPLAY_NAME,
MediaStore.Video.Media.SIZE };
musiccursor = managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
proj, MediaStore.Audio.Media.DURATION + ">= 120000", null, sortOrder);
count = musiccursor.getCount();
musiclist = (ListView) findViewById(R.id.listView1);
musiclist.setAdapter(new MusicAdapter(getApplicationContext()));
musiclist.setOnItemClickListener(musicgridlistener);
mMediaPlayer = new MediaPlayer();
}
private OnItemClickListener musicgridlistener = new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position,
long id) {
System.gc();
music_column_index = musiccursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
musiccursor.moveToPosition(position);
String filename = musiccursor.getString(music_column_index);
String canzone=filename.replace("/storage/sdcard0/", "");
canzone=canzone.replace("Music/", "");
canzone=canzone.replace("media/", "");
canzone=canzone.replace("Ringtones/", "");
t=(TextView) findViewById(R.id.textView2);
t.setWidth(130);
t.setSingleLine(true);
t.setText(canzone);
try {
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.reset();
}
mMediaPlayer.setDataSource(filename);
mMediaPlayer.prepare();
mMediaPlayer.start();
} catch (Exception e) {
}
}
};
答案 0 :(得分:1)
这是你从mediastore中排序东西的方式
String sortOrder = MediaStore.Audio.Media.TITLE + " ASC";
如果你想通过艺术家或其他东西对它进行排序..只需用你需要的东西替换“TITLE”部分..
如果您觉得我的答案有用,请接受
编辑:对不起,我忘了你要把这个排序的东西放在哪里
musiccursor = managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
proj, MediaStore.Audio.Media.DURATION + ">= 120000", null, null);
在这一行节点中。用sortorder替换最后一个“null”,你将获得排序列表......