(本方法核心思想是 在適配器里面為 每一個item 添加

selector)

適配器里面代碼：

package com.blogtask.adapter;

import com.blogtask.activity.R;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.LinearLayout;

import android.widget.TextView;

public class demoadapter extends BaseAdapter {

private LayoutInflater inflater;

private String[] list;

private int resource;

public demoadapter(Context context,String[]

list,int resource){

this.inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

this.list=list;

this.resource=resource;

}

@Override

public int getCount() {

// TODO Auto-generated method

stub

return list.length;

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method

stub

return list[position];

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method

stub

return position;

}

@Override

public View getView(int position, View

convertView, ViewGroup parent) {

// TODO Auto-generated method

stub

viewholder view=null;

if(convertView==null){

view=new

viewholder();

convertView=this.inflater.inflate(this.resource,

null);

//convertView.

convertView.setBackgroundResource(getbg(position));?view.tv=(TextView)convertView.findViewById(R.id.textView1);

convertView.setTag(view);

}else{

view=(viewholder)convertView.getTag();

}

view.tv.setText(list[position]);

return convertView;

}

private int getbg(int

position) {

// TODO Auto-generated method

stub

if(position==0&&list.length==1){?//僅一項

return

R.drawable.a_all;

}

if(position==0){?//第一項

return

R.drawable.a_top;

}

if(position==list.length-1){最后一項

return

R.drawable.a_bot;

}

return R.drawable.a_nor;

中間項

}?private final

class viewholder{

private TextView tv;

}

}

listview設置：

android:id="@+id/mylv"

android:listSelector="@android:color/transparent"

android:cacheColorHint="@android:color/transparent"?android:layout_width="match_parent"

android:layout_height="wrap_content" >

四個selector：1.中間項

android:state_pressed="true">

?

android:color="#d6ddf0">

android:state_focused="true">

?

android:color="#d6ddf0">

?

android:color="#ffffff">

2.第一項

android:state_pressed="true">

android:topRightRadius="8dip" />

android:color="#d6ddf0">

android:state_focused="true">

android:topRightRadius="8dip" />

android:color="#d6ddf0">

android:topRightRadius="8dip" />

android:color="#ffffff">

3.最后一項

android:state_pressed="true">

android:bottomRightRadius="8dip" />

android:color="#d6ddf0">

android:state_focused="true">

android:bottomRightRadius="8dip" />

android:color="#d6ddf0">

android:bottomRightRadius="8dip" />

android:color="#ffffff">

4.單獨一項

android:state_pressed="true">

android:topRightRadius="8dip" android:bottomLeftRadius="8dip"

android:bottomRightRadius="8dip" />

android:color="#d6ddf0">

android:state_focused="true">

android:topRightRadius="8dip"?android:bottomLeftRadius="8dip" android:bottomRightRadius="8dip"

/>

android:color="#d6ddf0">

android:topRightRadius="8dip"?android:bottomLeftRadius="8dip" android:bottomRightRadius="8dip"

/>

android:color="#ffffff">

總結

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