package com.wlh.app.notepad.adapter;
import java.util.ArrayList;
import com.wlh.app.notepad.modle.NotepdaBean;
import com.wlh.app.notepad.util.db.MyDataBaseHelper;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.wlh.app.notepad.act.NarrateAct;
import com.wlh.app.notepad.act.R;
public class ListToItemAdapter extends BaseAdapter{
private NotepdaBean bean;
private ArrayList<NotepdaBean> arrayList = new ArrayList<NotepdaBean>();
public static SQLiteDatabase database;
private LayoutInflater mInflater;
private float downX;
private float upX;
private TextView mListjmp;
private Animation animation;
private Context context;
private View view;
public ListToItemAdapter(Context context){
mInflater = LayoutInflater.from(context);
this.context = context;
animation=AnimationUtils.loadAnimation(context, R.anim.push_out);
}
public void addDataSource(ArrayList<NotepdaBean> arrayList){
this.arrayList = arrayList;
notifyDataSetChanged();
}
public void insertDataSource(NotepdaBean bean){
arrayList.add(bean);
notifyDataSetChanged();
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return arrayList.size() > 0 ? arrayList.size() : 0;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return arrayList.size() > 0 ? arrayList.get(position) : "";
}
@Override
public long getItemId(int id) {
// TODO Auto-generated method stub
return id;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.activity_list, parent, false);
holder = new ViewHolder();
holder.mListImg = (ImageView) convertView.findViewById(R.id.list_img_title);
holder.mListTitle = (TextView) convertView.findViewById(R.id.list_tv_title);
holder.mListContent = (TextView) convertView.findViewById(R.id.list_tv_content);
holder.mListData = (TextView) convertView.findViewById(R.id.list_tv_data);
holder.mListjmp = (TextView) convertView.findViewById(R.id.list_tv_jmp);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
convertView.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
final ViewHolder holder = (ViewHolder) v.getTag();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
downX = event.getX();
if (mListjmp != null) {
mListjmp.setVisibility(View.GONE);
}
break;
case MotionEvent.ACTION_UP:
upX = event.getX();
break;
}
if (holder.mListjmp != null) {
if (Math.abs(downX - upX) > 35) {
holder.mListjmp.setVisibility(View.VISIBLE);
mListjmp = holder.mListjmp;
view=v;
return true;
}
return false;
}
return false;
}
});
holder.mListjmp.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mListjmp != null) {
mListjmp.setVisibility(View.GONE);
database = NarrateAct.dataBaseHelper.getWritableDatabase();
String deletesql = "DELETE FROM "+MyDataBaseHelper.NOTEPAD_TABLE_NAME+" WHERE "+MyDataBaseHelper.NOTEPAD_ID +"= '?'";
Log.i("my", deletesql);
database.execSQL(deletesql, new String[]{bean.getID()+""});
deleteItem(view, position);
}
}
});
bean = (NotepdaBean) getItem(position);
holder.mListImg.setBackgroundResource(bean.getImg());
holder.mListTitle.setText(bean.getTitlie());
holder.mListContent.setText(bean.getContent());
holder.mListData.setText(bean.getDate());
holder.mListjmp.setVisibility(View.GONE);
holder.mListjmp.setBackgroundResource(R.drawable.ic_list_delete);
return convertView;
}
public void deleteItem(View view,final int position){
view.startAnimation(animation);
animation.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
arrayList.remove(position);
notifyDataSetChanged();
}
});
}
static class ViewHolder{
ImageView mListImg;
TextView mListTitle;
TextView mListContent;
TextView mListData;
TextView mListjmp;
}
}
谢谢了 已经解决了 MyDataBaseHelper就是SQLite的辅助类
database = NarrateAct.dataBaseHelper.getWritableDatabase();
需要看一下NarrateAct的代码，dataBaseHelper这个变量是不是没有初始化，或者是DataBaseHelper这个类里面的建表语句有问题？
另外，MyDataBaseHelper和DataBaseHelper的关系是？