继承ArrayAdapter类的实例

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private class SelectAccountListAdapter extends ArrayAdapter<String>{    private Context mContext;    private int mResId;    private int mDialogId;    private final float OPACITY=0.54f;//opacity不透明的    private List<SubscriptionInfo>mSubInfoList;        public SelectAccountListAdapter(List<SubscriptionInfo>subInfoList,    Context context,int resource,string[] arr,int dialogId){    super(context,resource,arr);    mContext=context;    mResId=resource;    mDialogId=dialogId;    mSubInfoList=subInfoList;    }        @Override    public View getView(int position, View convertView, ViewGroup parent) {    LayoutInflater inflater=(LayoutInflater)    mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    View rowView;    final ViewHolder holder;        if(convertView==null){    rowView=inflater.inflate(mResId, null);    holder=new ViewHolder();    holder.title=(TextView)rowView.findViewById(R.id.title);    holder.summary=(TextView)rowView.findViewById(R.id.summary);    holder.icon=(ImageView)rowView.findViewById(R.id.icon);    rowView.setTag(holder);    }else{    rowView=convertView;    holder=(ViewHolder)rowView.getTag();    }        final SubscriptionInfo sir=mSubInfoList.get(position);    if(sir==null){    holder.title.setText(getItem(position));    hodler.summary.setText("");    if(mDialogId==CALL_PICK){    setPhoneAccountIcon(holder,position);    }else{    holder.icon.setImageDrawable(getResource()    .getDrawable(R.drawable.ic_live_help));    }        mSimManagementExt.setSmsAutoItemIcon(holder.icon,mDialogId,postion);    mSimManagementExt.setCurrNetworkIcon(holder.icon,mDialogId,position);    holder.icon.setAlpha(OPACITY);    }else{    holder.title.setText(sir.getDisplayName());    holder.summary.setText(sir.getNumber());    holder.icon.setImageDrawable(sir.createIconBitmap(mContext));    holder.icon.setAlpha(1.0f);    }    return rowView;    }        private class ViewHolder{    TextView title;    TextView summary;    ImageView icon;    }        private void setPhoneAccountIcon(ViewHolder holder,int location){    String askFirst=getResources().getString(R.string.sim_calls_ask_first_prefs_title);    String lableString=getItem(location);    final TelecomManager telecomManager=TelecomManager.from(mContext);    List<PhoneAccountHandle> phoneAccountHandles=    telecomManager.getCallCapablePhoneAccounts();    if(!askFirst.equals(lableString)){    if(phoneAccountHandles.size()>1){    location=location-1;    }    PhoneAccount phoneAccount=null;    if(location>=0 && location<phoneAccountHandles.size()){    phoneAccount=    telecomManager.getPhoneAccount(phoneAccountHandles.get(location));    }    if(phoneAccount!=null){    holder.icon.setImageDrawable(phoneAccount.getIcon().loadDrawable(mContext));    }    }else{    holder.icon.setImageDrawable(getResources().getDrawable(R.drawable.ic_live_help));    }    }    }
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