개발자 질문/답변 게시판이 새로운 공간으로 이전되었습니다.

안드로이드 개발 질문/답변 (글 수 45,052)

Listview 에서 버튼을 작동 시키려고 하는데, 에러가 납니다ㅠㅠ 꼭 좀 도와주세욥!!

방씨씨

https://www.androidpub.com/android_dev_qna/2188617

2012.06.12 18:11:13

2802

앱개발 질문

Adapter에서 오류가 나는 것 같아 소스코드하고 logcat 같이 올려요 ㅠㅠ

꼭 좀 도와주세요.. 초보자라 잘 모르겠네요 ~

package org.androidtown.offera;

import java.util.ArrayList;

import java.util.List;

import android.os.Bundle;

import android.util.Log;

import android.view.View.OnClickListener;

import android.app.ListActivity;

import android.content.Context;

import android.content.Intent;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.TextView;

import android.content.Intent;

public class IconTextListAdapter extends BaseAdapter {

private Context mContext;

private List<IconTextItem> mItems = new ArrayList<IconTextItem>();

private Button msgBtn = null;

public IconTextListAdapter(Context context) {

mContext = context;

}

public void addItem(IconTextItem it) {

mItems.add(it);

}

public void setListItems(List<IconTextItem> lit) {

mItems = lit;

}

public int getCount() {

return mItems.size();

}

public Object getItem(int position) {

return mItems.get(position);

}

public boolean areAllItemsSelectable() {

return false;

}

public boolean isSelectable(int position) {

try {

return mItems.get(position).isSelectable();

} catch (IndexOutOfBoundsException ex) {

return false;

}

public long getItemId(int position) {

return position;

}

class ViewHolder{

TextView text1;

TextView text2;

Button button3;

Button button4;

}

public View getView(int position, View convertView, ViewGroup parent) {

IconTextView itemView;

ViewHolder holder;

if (convertView == null) {

itemView = new IconTextView(mContext, mItems.get(position));

holder = new ViewHolder();

holder.text1=(TextView)convertView.findViewById(R.id.dataItem01);

holder.text2=(TextView)convertView.findViewById(R.id.dataItem02);

holder.button3=(Button)convertView.findViewById(R.id.dataItem03);

holder.button4=(Button)convertView.findViewById(R.id.dataItem04);

holder.button3.setOnClickListener(new OnClickListener(){

public void onClick(View v){

Intent my = new Intent(mContext, MessagePage.class);

mContext.startActivity(my);

}

});

holder.text1.setText(((IconTextItem) mItems).getData(position));

holder.text2.setText(((IconTextItem) mItems).getData(position));

holder.button3.setText(((IconTextItem) mItems).getData(position));

holder.button4.setText(((IconTextItem) mItems).getData(position));

} else {

itemView = (IconTextView) convertView;

itemView.setIcon(mItems.get(position).getIcon());

itemView.setText(0, mItems.get(position).getData(0));

itemView.setText(1, mItems.get(position).getData(1));

itemView.setText(2, mItems.get(position).getData(2));

}

return itemView;

}

06-12 17:35:12.561: E/AndroidRuntime(279): FATAL EXCEPTION: main

06-12 17:35:12.561: E/AndroidRuntime(279): java.lang.NullPointerException

06-12 17:35:12.561: E/AndroidRuntime(279): at org.androidtown.offera.IconTextListAdapter.getView(IconTextListAdapter.java:74)

06-12 17:35:12.561: E/AndroidRuntime(279): at android.widget.AbsListView.obtainView(AbsListView.java:1315)

06-12 17:35:12.561: E/AndroidRuntime(279): at android.widget.ListView.makeAndAddView(ListView.java:1727)

06-12 17:35:12.561: E/AndroidRuntime(279): at android.widget.ListView.fillDown(ListView.java:652)

06-12 17:35:12.561: E/AndroidRuntime(279): at android.widget.ListView.fillFromTop(ListView.java:709)

06-12 17:35:12.561: E/AndroidRuntime(279): at android.widget.ListView.layoutChildren(ListView.java:1580)

06-12 17:35:12.561: E/AndroidRuntime(279): at android.widget.AbsListView.onLayout(AbsListView.java:1147)