LazyList set item height

Question

Я использую listview с lazyadapter, и теперь мне нужно изменить высоту строки элемента, но, похоже, это немного сложнее. Вот мой адаптер:

public class AlbumDetailsAdapter extends BaseAdapter { 

    private Activity activity; 
    private ArrayList<Songs> data; 
    private static LayoutInflater inflater = null; 
    private MediaPlayer mediaPlayer; 

    public AlbumDetailsAdapter(Activity a, ArrayList<Songs> products) { 
     activity = a; 
     mediaPlayer = new MediaPlayer(); 
     data = products; 
     inflater = (LayoutInflater) activity 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 

    public int getCount() { 
     return data.size(); 
    } 

    public Object getItem(int position) { 
     return position; 
    } 

    public long getItemId(int position) { 
     return position; 
    } 

    public View getView(final int position, View convertView, ViewGroup parent) { 
     View vi = convertView; 
     if (convertView == null) 
      vi = inflater.inflate(R.layout.songs_items, parent); 

     TextView songNumber = (TextView) vi 
       .findViewById(R.id.songs_item_number); 
     TextView albumTitle = (TextView) vi 
       .findViewById(R.id.songs_item_album_title); 
     TextView singer = (TextView) vi 
       .findViewById(R.id.songs_item_album_singer); 
     final ImageView playSong = (ImageView) vi.findViewById(R.id.songs_item_play); 
     ImageView downloadSong = (ImageView) vi 
       .findViewById(R.id.songs_item_download); 

     if (!data.get(position).getSONG_MP3() 
       .equals("http://nelu.burduja.com/musica/songs_with/")) { 
      downloadSong.setBackgroundResource(R.drawable.down_yes); 
      if (!mediaPlayer.isPlaying()) { 
       playSong.setBackgroundResource(R.drawable.play_nr); 
      } 
      playSong.setOnClickListener(new OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        if (mediaPlayer.isPlaying()) { 
         mediaPlayer.release(); 
         playSong.setBackgroundResource(R.drawable.play_nr); 
         mediaPlayer=new MediaPlayer(); 
        } else { 
         playSong.setBackgroundResource(android.R.drawable.ic_media_pause); 
         try { 
          mediaPlayer.setDataSource(data.get(position) 
            .getSONG_MP3()); 
          final ProgressDialog bufferingDialog=new ProgressDialog(activity); 
          bufferingDialog.setMessage("Buffering ..."); 
          bufferingDialog.show(); 
          mediaPlayer.prepareAsync(); 
          mediaPlayer.setOnPreparedListener(new OnPreparedListener() { 

           @Override 
           public void onPrepared(MediaPlayer arg0) { 
            bufferingDialog.dismiss(); 
            mediaPlayer.start(); 
           } 
          }); 
          mediaPlayer.setOnCompletionListener(new OnCompletionListener() { 

           @Override 
           public void onCompletion(MediaPlayer arg0) { 
            playSong.setBackgroundResource(R.drawable.play_nr); 
            mediaPlayer.release(); 
           } 
          }); 


         } 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(); 
         } 
        } 
       } 
      }); 
     } 
     ImageView youtube = (ImageView) vi.findViewById(R.id.songs_item_video); 
     if (data.get(position).getSONG_MP4().length() > 0) { 
      youtube.setBackgroundResource(R.drawable.video_nr); 
      youtube.setOnClickListener(new OnClickListener() { 

       @Override 
       public void onClick(View v) { 
        Intent intent = new Intent(Intent.ACTION_VIEW, Uri 
          .parse(data.get(position).getSONG_MP4())); 
        v.getContext().startActivity(intent); 
       } 
      }); 
     } 

     albumTitle.setText(data.get(position).getSONG_TITLE()); 
     singer.setText(data.get(position).getSONG_ARTIST()); 
     songNumber.setText((position + 1) + ""); 
     return vi; 
    } 
} 

И мой songs_item XML файл:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="50dp" 
    android:gravity="center_vertical" 
    android:background="@drawable/list_item_sel" 
    android:orientation="horizontal" 
    android:weightSum="100" > 

    <TextView 
     android:id="@+id/songs_item_number" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center_vertical" 
     android:layout_weight="10" 
     android:textColor="@android:color/white" /> 

    <LinearLayout 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center" 
     android:layout_weight="55" 
     android:gravity="center_horizontal" 
     android:orientation="vertical" > 

     <TextView 
      android:id="@+id/songs_item_album_title" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="center_vertical" 
      android:textColor="@android:color/white" 
      android:textSize="20sp" 
      android:textStyle="bold" /> 

     <TextView 
      android:id="@+id/songs_item_album_singer" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="center_vertical" 
      android:textColor="@android:color/white" /> 
    </LinearLayout> 

     <LinearLayout 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="35" 
     android:gravity="right" 
     android:orientation="horizontal" > 

    <ImageView 
     android:id="@+id/songs_item_play" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center_vertical" 
     android:contentDescription="@string/app_name" 
     android:background="@drawable/play_pr" /> 

    <ImageView 
     android:id="@+id/songs_item_video" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center_vertical" 
     android:contentDescription="@string/app_name" 
     android:background="@drawable/video_pr"/> 

    <ImageView 
     android:id="@+id/songs_item_download" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center_vertical" 
     android:contentDescription="@string/app_name" 
     android:background="@drawable/down_no"/> 
    </LinearLayout> 
</LinearLayout> 

Нет матер, какие изменения я делаю в XML я не могу изменить высоту элемента в ListView в. Может ли кто-нибудь сказать мне, как я могу это сделать. Кроме того, я видел, что я должен попробовать положить vi = inflater.inflate(R.layout.songs_items, parent); в методе адаптеры GetView, но приложение аварий и дает мне ошибку

04-05 11:02:37.502: E/AndroidRuntime(12776): FATAL EXCEPTION: main 
04-05 11:02:37.502: E/AndroidRuntime(12776): java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.AdapterView.addView(AdapterView.java:471) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.LayoutInflater.inflate(LayoutInflater.java:497) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at com.outsoucefarm.musicagratis.functions.AlbumDetailsAdapter.getView(AlbumDetailsAdapter.java:55) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.AbsListView.obtainView(AbsListView.java:2033) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.ListView.makeAndAddView(ListView.java:1781) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.ListView.fillDown(ListView.java:672) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.ListView.fillFromTop(ListView.java:732) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.ListView.layoutChildren(ListView.java:1634) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.AbsListView.onLayout(AbsListView.java:1863) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.View.layout(View.java:11278) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:925) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.View.layout(View.java:11278) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.View.layout(View.java:11278) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.LinearLayout.onLayout(LinearLayout.java:1399) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.View.layout(View.java:11278) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.View.layout(View.java:11278) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1489) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.os.Handler.dispatchMessage(Handler.java:99) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.os.Looper.loop(Looper.java:137) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at android.app.ActivityThread.main(ActivityThread.java:4440) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at java.lang.reflect.Method.invokeNative(Native Method) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at java.lang.reflect.Method.invoke(Method.java:511) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554) 
04-05 11:02:37.502: E/AndroidRuntime(12776): at dalvik.system.NativeStart.main(Native Method) 

Так пожалуйста, помогите мне решить эту проблему

Answer 1

решить эту проблему. линия vi = inflater.inflate(R.layout.songs_items, null); должна быть vi = inflater.inflate(R.layout.songs_items, parent, false);