listview 最简单也最困难1

package com.weidingqiang.custommooc.views.widgets;

import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListView;

import com.weidingqiang.custommooc.R;
import com.weidingqiang.custommooc.models.LeftMenuVO;
import com.weidingqiang.custommooc.views.adapters.LeftMenuAdapter;
import com.weidingqiang.custommooc.views.interfaces.LeftMenuViewImp;

/**
 * Created by weidingqiang on 15/11/26.
 */
public class LeftMenuView extends LinearLayout {

    private LeftMenuViewImp leftMenuViewImp;

    private ListView listView;

    private LeftMenuAdapter leftMenuAdapter;

    public void setLeftMenuViewImp(LeftMenuViewImp leftMenuViewImp) {
        this.leftMenuViewImp = leftMenuViewImp;
    }

    public LeftMenuView(Context context) {
        this(context, null);
    }

    public LeftMenuView(Context context, AttributeSet attrs) {
        super(context, attrs);

        LayoutInflater layoutInflater = LayoutInflater.from(context);
        layoutInflater.inflate(R.layout.left_menu_view,this,true);

        initView();
        initData();
        initEvent();
    }

    private void initView(){
        listView =(ListView) this.findViewById(R.id.left_listview);
    }

    private void initData(){
        leftMenuAdapter = new LeftMenuAdapter(getContext());
        listView.setAdapter(leftMenuAdapter);
    }

    private void initEvent(){
        listView.setOnItemClickListener(new DrawerItemClickListener());
    }

    /* The click listner for ListView in the navigation drawer */
    private class DrawerItemClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

            LeftMenuVO selectLeftMenuVO = (LeftMenuVO) leftMenuAdapter.leftMenuVOs.get(position);
            if(selectLeftMenuVO.isSelected())
                return;

            for (int i = 0;i<leftMenuAdapter.getCount();i++)
            {
                LeftMenuVO leftMenuVO = (LeftMenuVO) leftMenuAdapter.leftMenuVOs.get(i);

                leftMenuVO.setSelected(i == position);
            }

            leftMenuViewImp.leftselectItem(position);
            leftMenuAdapter.notifyDataSetChanged();
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/left_list_item_bg"
    >

    <ImageView
        android:layout_marginLeft="40dp"
        android:layout_marginTop="16dp"
        android:layout_marginBottom="16dp"
        android:id="@+id/left_list_item_imageview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
    <TextView
        android:layout_marginLeft="10dp"
        android:layout_marginTop="16dp"
        android:layout_marginBottom="16dp"
        android:id="@+id/left_list_item_textview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@drawable/left_list_text_color_item"
        />
</LinearLayout>