getView方法没有调用，ArrayAdapter里面片段

Question

我已经使用自定义ArrayAdapter但getView()方法没有被调用。 但是，我检查了getCount()方法，它返回value > 0. 2在我的情况。 这是我的适配器的代码片段。

public class ProfilesSwipableAdapter extends ArrayAdapter<SoundProfile> { 
private final ArrayList<SoundProfile> cards; 
private final LayoutInflater layoutInflater; 
private GoogleApiClient mGoogleApiClient; 
private Context mContext; 

public ProfilesSwipableAdapter(Context context, int resource, ArrayList<SoundProfile> cards) { 
    super(context, 0, cards); 
    this.mContext = context; 
    this.cards = cards; 
    //this.layoutInflater = LayoutInflater.from(context); 
    this.layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

    if (mGoogleApiClient == null) { 
     mGoogleApiClient = new GoogleApiClient.Builder(mContext) 
       .addApi(LocationServices.API) 
       .build(); 
    } 
    mGoogleApiClient.connect(); 
} 

@Override 
public View getView(final int position, View convertView, ViewGroup parent) { 
    final SoundProfile card = cards.get(position); 
    View view = layoutInflater.inflate(R.layout.list_item_profile, parent, false); 

    Glide.with(mContext) 
      .load(getMapURLBlack) 
      .into(((ImageView) view.findViewById(R.id.map_lite))); 

    ((TextView) view.findViewById(R.id.txtProfileName)).setText(card.profileName); 

    view.findViewById(R.id.imgEdit).setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      final LocationManager manager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE); 

      if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { 
       buildAlertMessageNoGps(); 
      } else { 
       Intent intent = new Intent(mContext, MainActivity.class); 
       intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
       intent.putExtra("name", card.profileName); 
       intent.putExtra("key", card.mKey); 
       intent.putExtra("lat", card.latitude); 
       intent.putExtra("lng", card.longitude); 
       mContext.startActivity(intent); 
      } 
     } 
    }); 

    view.findViewById(R.id.btnDelete).setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      final AlertDialog.Builder builder = new AlertDialog.Builder(mContext); 
      builder.setMessage(mContext.getResources().getString(R.string.prompt_discard_profile)) 
        .setCancelable(true) 
        .setPositiveButton("Yes", new DialogInterface.OnClickListener() { 
         public void onClick(@SuppressWarnings("unused") final DialogInterface dialog, @SuppressWarnings("unused") final int id) { 
          ArrayList<String> list = new ArrayList<String>(); 
          list.add(card.mKey); 
          LocationServices.GeofencingApi.removeGeofences(mGoogleApiClient, list); 
          FirebaseDatabase.getInstance().getReference().child("profiles").child(FirebaseAuth.getInstance().getCurrentUser().getUid()).child(card.mKey).removeValue(); 
          EventBus.getDefault().post(new ProfileDeletedEvent(position)); 
         } 
        }) 
        .setNegativeButton("No", new DialogInterface.OnClickListener() { 
         public void onClick(final DialogInterface dialog, @SuppressWarnings("unused") final int id) { 
          dialog.cancel(); 
         } 
        }); 
      final AlertDialog alert = builder.create(); 
      alert.show(); 
     } 
    }); 

    return view; 
} 

public void buildAlertMessageNoGps() { 
    final AlertDialog.Builder builder = new AlertDialog.Builder(mContext); 
    builder.setMessage("Your GPS seems to be disabled, do you want to enable it?") 
      .setCancelable(true) 
      .setPositiveButton("Yes", new DialogInterface.OnClickListener() { 
       public void onClick(@SuppressWarnings("unused") final DialogInterface dialog, @SuppressWarnings("unused") final int id) { 
        mContext.startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS)); 
       } 
      }) 
      .setNegativeButton("No", new DialogInterface.OnClickListener() { 
       public void onClick(final DialogInterface dialog, @SuppressWarnings("unused") final int id) { 
        dialog.cancel(); 
       } 
      }); 
    final AlertDialog alert = builder.create(); 
    alert.show(); 
} 

@Override 
public SoundProfile getItem(int position) { 
    return cards.get(position); 
} 

@Override 
public long getItemId(int i) { 
    return i; 
} 

@Override 
public int getCount() { 
    return cards.size(); 
} 

}

我从初始化片段这个适配器。 我已经检查过，我通过的ArrayList也有items > 0 & adapter.getCount returns > 0以及不知道这里发生了什么错误。 这是这段代码片段。

profilesSwipableAdapter = new ProfilesSwipableAdapter(getActivity(), R.layout.list_item_profile, profileArrayList); 
      swipeCardView.setAdapter(profilesSwipableAdapter); 

什么是真正令人沮丧的我来说，如果我跟进活动相同的步骤，我得到正确的结果，即适配器getView()获取调用。 什么可能是错的？

Answer 1

/Just try to use below code Snippet/ 

Put the below code below onCreateView of Fragment 

Activity mactivity; 
MainActivity main_activity; 

Note: MainActivity --> is Activity on which Fragment is Attached. 


@Override 
public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 

    mactivity = getActivity(); 

    main_activity = (MainActivity) mactivity; 
} 

And then try to use "main_activity" instead of getActivity() in 
below code. 

profilesSwipableAdapter = new ProfilesSwipableAdapter(main_activity, R.layout.list_item_profile, profileArrayList); 
     swipeCardView.setAdapter(profilesSwipableAdapter);