播放listview中的歌曲到android中的媒体播放器 [英] play songs from listview to media player in android
问题描述
嗨朋友们，
我一直在开发一个应用程序，它是在listview中存储歌曲并在我们的媒体播放器中播放相应的歌曲。我生成了一个代码，但一个问题是我可以一次播放一首歌。那就是如果我选择一首要播放的歌曲，就会播放。然后我选择其他歌曲同时播放两首歌。我把我的歌曲从数据库带到Listview。你可以帮我解决我的问题。
我的代码是
公共类ListDownloadedItem扩展活动{
BookModel bm;
private int currentPosition = 0;
BookAdapter bookadpt;
MediaPlayer mp;
ListView列表簿;
// BookAdapter bookadpt;
/ **该活动首先创建。 * /
@Override
public void onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）;
setContentView（R.layout.listdownbook）;
listbooks =（ListView）findViewById（R.id.down）;
bookadpt = new BookAdapter（ListDownloadedItem.this）;
// bookadpt.createDatabase（）;
bookadpt.open（）;
final ArrayList< bookmodel> values = bookadpt.selectAll（）;
ArrayList< bookmodel> bookModels = new ArrayList< bookmodel>（）;
listbooks.setAdapter（新的ArrayAdapter< bookmodel>（this，
android.R.layout.simple_list_item_1，值））;
bookadpt.close（）;
listbooks.setTextFilterEnabled（true）;
listbooks.setOnItemClickListener（new OnItemClickListener（）{
@Override
public void onItemClick（AdapterView int position，long id ）{
bm = values.get（position）;
playSong（Utilis.DB_PATH + bm.getPartName（））;
}
}）;
< br $>
}
private void playSong（String songPath）{
boolean flag = false;
mp = new MediaPlayer（ ）;
// if（flag == true）
mp.stop（）;
mp .reset（）;
mp.release（）;
尝试{
mp.setDataSource（songPath ）;
mp.prepare（）;
mp.start（）;
} catch（IllegalArgumentException e）{
// TODO自动生成的捕获块
e.printStackTrace（）;
} catch（SecurityException e）{
// TODO自动生成的捕获块
e.printStackTrace（）;
} catch（IllegalStateException e）{
// TODO自动生成的捕获块
e.printStackTrace（）;
} catch（IOException e）{
// TODO自动生成的捕获块
e.printStackTrace（）;
}
}
@Override
protected void onDestroy（）{
super.onDestroy（）;
mp.stop（）;
mp.reset（）;
mp.release（）;
}
}
Hi Friends,
i have been developing an application that is store songs in listview and play corresponding songs in our media player. i generated a code, but one problem is that i can to play a song at a time. that is if i select one song to play , that will playing. then i selected other songs both songs are playing concurrently.I took my songs from database to Listview.Can you help me to solve my problem.
My Code is
public class ListDownloadedItem extends Activity{
BookModel bm;
private int currentPosition=0;
BookAdapter bookadpt;
MediaPlayer mp;
ListView listbooks;
//BookAdapter bookadpt;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listdownbook);
listbooks = (ListView) findViewById(R.id.down);
bookadpt = new BookAdapter(ListDownloadedItem.this);
// bookadpt.createDatabase();
bookadpt.open();
final ArrayList<bookmodel> values = bookadpt.selectAll();
ArrayList<bookmodel>bookModels=new ArrayList<bookmodel>();
listbooks.setAdapter(new ArrayAdapter<bookmodel>(this,
android.R.layout.simple_list_item_1, values));
bookadpt.close();
listbooks.setTextFilterEnabled(true);
listbooks.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView int position, long id) {
bm= values.get(position);
playSong(Utilis.DB_PATH + bm.getPartName());
}
});
}
private void playSong(String songPath) {
boolean flag=false;
mp=new MediaPlayer();
//if(flag==true)
mp.stop();
mp.reset();
mp.release();
try {
mp.setDataSource(songPath);
mp.prepare();
mp.start();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
mp.stop();
mp.reset();
mp.release();
}
}
推荐答案
当你关闭你的活动时..只需添加一个简单的行代码。
finish（）;
when you close your activity .. just add a simple line code.
finish();
这篇关于播放listview中的歌曲到android中的媒体播放器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
