package com.clsys.adapter;
import java.util.ArrayList;
import com.clsys.activity.R;
import android.content.Context;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
public class SuperLVAdapter<T> extends BaseAdapter {
private final int mIdResource;
private Context mContext;
private ArrayList<T> mArrayList;
public ViewHolderBase holder = new ViewHolderBase();
public SuperLVAdapter(Context mContext, int mIdResource,
ArrayList<T> mArrayList) {
this.mContext = mContext;
this.mIdResource = mIdResource;
this.mArrayList = mArrayList;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return mArrayList.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return mArrayList.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(mContext).inflate(mIdResource,
null);
}
initViewContent(convertView);
return convertView;
}
public void initViewContent(View convertView) {
}
class ViewHolderBase {
// I added a generic return type to reduce the casting noise in client
// code
@SuppressWarnings("unchecked")
public <T extends View> T get(View view, int id) {
SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
if (viewHolder == null) {
viewHolder = new SparseArray<View>();
view.setTag(viewHolder);
}
View childView = viewHolder.get(id);
if (childView == null) {
childView = view.findViewById(id);
viewHolder.put(id, childView);
}
return (T) childView;
}
}
}
具体用法:
继承此类后 重写下面这个方法就好了 赶紧试试吧
public void initViewContent(View convertView) { TextView tvTextView = holder.get(convertView, R.id.tv);tv.settext("测试");}
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