android BaseAdapter 自定义适配器 BaseAdapter基类抽取 二
16lz
2022-05-27
android BaseAdapter 自定义适配器 BaseAdapter基类抽取 二
基类继承BaseAdapter
package com.zcycjy.mobile.adapter;import java.util.ArrayList;import java.util.List;import android.content.Context;import android.util.SparseArray;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup; public abstract class BAdapter extends android.widget.BaseAdapter { private List list; private LayoutInflater inflater; public BAdapter(Context context) { init(context, new ArrayList()); } public BAdapter(Context context, List list) { init(context, list); } private void init(Context context, List list) { this.list = list; this.inflater = LayoutInflater.from(context); } public List getList() { return list; } public void setList(List list) { this.list = list; } public void clear() { this.list.clear(); notifyDataSetChanged(); } public void addAll(List list) { if (null != list) { this.list.addAll(list); notifyDataSetChanged(); } } public void remove(int position){ if (null != list) { this.list.remove(position); notifyDataSetChanged(); } } @Override public int getCount() { return list == null ? 0 : list.size(); } @Override public T getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { if (null == convertView) { convertView = inflate(getContentView()); } onInitView(convertView, position); return convertView; } /** 加载布局 */ private View inflate(int layoutResID) { View view = inflater.inflate(layoutResID, null); return view; } public abstract int getContentView(); public abstract void onInitView(View view, int position); /** * * @param view * converView * @param id * 控件的id * @return 返回 */ @SuppressWarnings("unchecked") protected E get(View view, int id) { SparseArray viewHolder = (SparseArray) view.getTag(); if (null == viewHolder) { viewHolder = new SparseArray(); view.setTag(viewHolder); } View childView = viewHolder.get(id); if (null == childView) { childView = view.findViewById(id); viewHolder.put(id, childView); } return (E) childView; } } package com.zcycjy.mobile.adapter;import java.util.List;import android.content.Context;import android.view.View;import android.widget.TextView;import com.zcycjy.mobile.R;import com.zcycjy.mobile.entity.Address;public class AddressAdapter extends BAdapter {public AddressAdapter(Context context, List list) {super(context, list);}@Overridepublic int getContentView() {return R.layout.item_address;}@Overridepublic void onInitView(View view, int position) {// TODO Auto-generated method stubTextView tv = get(view, R.id.item_tv_name);Address ad = (Address) getItem(position);tv.setText(ad.getId());}}更多相关文章
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