android 焦点图自动切换例子

package com.demo.activity; import java.util.ArrayList; import java.util.List; import java.util.Map; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.TextView; /** * 焦点图适配器 * @author xmz * */ public class FocusAdapter extends BaseAdapter { private List<Map<String,Object>> list; private Context context; public FocusAdapter(Context context){ list=new ArrayList<Map<String, Object>>(); this.context=context; } @Override public int getCount() { return list.size(); } @Override public Map getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } public void addFocus(Map<String, Object> map){ list.add(map); notifyDataSetChanged(); } @Override public View getView(int position, View convertView, ViewGroup parent) { View view=LayoutInflater.from(context).inflate(R.layout.focus,null); Map<String,Object> map=getItem(position); //焦点图 RelativeLayout mainLayout=(RelativeLayout)view.findViewById(R.id.focus_mainLayout); mainLayout.setBackgroundResource(Integer.parseInt(map.get("focusImage").toString())); //影片说明 TextView introText=(TextView)view.findViewById(R.id.focus_introText); introText.setText(map.get("intro").toString()); //焦点指针 ImageView pointImage=(ImageView)view.findViewById(R.id.focus_pointImage); int resid=0; switch (position){ case 0: resid=R.drawable.focus_point_1; break; case 1: resid=R.drawable.focus_point_2; break; case 2: resid=R.drawable.focus_point_3; break; case 3: resid=R.drawable.focus_point_4; break; case 4: resid=R.drawable.focus_point_5; break; } pointImage.setBackgroundResource(resid); return view; } }