android Studio listView 简单的用法

//java 程序 package com.spaceflight.propertymanage.activities;

import android.os.Bundle; import android.support.annotation.Nullable; import android.view.View; import android.widget.ListView; import android.widget.Toast;

import com.spaceflight.propertymanage.R; import com.spaceflight.propertymanage.adapter.CommonAdapter; import com.spaceflight.propertymanage.base.BaseActivity; import com.spaceflight.propertymanage.holder.ViewHolder;

import java.util.ArrayList; import java.util.HashMap;

/**

• 核查管理
• Created by rootBing on 2017/11/30 0030. */

public class CheckManageActivity extends BaseActivity implements View.OnClickListener {

private ListView mListView;
private ArrayList<HashMap<String, String>> mList;

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_check_manage);
    addTestData();
    initView();
}

private void addTestData() {
    mList = new ArrayList<>();
    HashMap<String, String> map = new HashMap<>();
    map.put("name", "核查");
    map.put("date", "2017-10-12");
    map.put("type", "test");
    mList.add(map);
    HashMap<String, String> map1 = new HashMap<>();
    map1.put("name", "核查01");
    map1.put("date", "2017-10-13");
    map1.put("type", "test");
    mList.add(map1);
    HashMap<String, String> map2 = new HashMap<>();
    map2.put("name", "核查02");
    map2.put("date", "2017-10-14");
    map2.put("type", "test");
    mList.add(map2);
    HashMap<String, String> map3 = new HashMap<>();
    map3.put("name", "核查03");
    map3.put("date", "2017-10-30");
    map3.put("type", "test");
    mList.add(map3);
}

private void initView() {

    CommonAdapter commonAdapter = new CommonAdapter(this, mList, R.layout.item_check_manage) {
        @Override
        public void convert(ViewHolder holder, int position) {

            HashMap<String, String> map = mList.get(position);
            holder.getView(R.id.tv_check_manage_complete).setOnClickListener(CheckManageActivity.this);
            holder.getView(R.id.tv_check_manage_modify).setOnClickListener(CheckManageActivity.this);
            holder.setText(R.id.tv_check_manage_name, map.get("name"));
            holder.setText(R.id.tv_check_manage_type, map.get("type"));
            holder.setText(R.id.tv_check_manage_date, map.get("date"));
        }
    };
    mListView = findView(R.id.lv_check_manage);
    mListView.setAdapter(commonAdapter);
}


@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.tv_check_manage_complete:
            Toast.makeText(this, "complete", Toast.LENGTH_SHORT).show();
            break;
        case R.id.tv_check_manage_modify:
            Toast.makeText(this, "modify", Toast.LENGTH_SHORT).show();
            break;
    }
}

}

//适配器 CommenAdaper

package com.spaceflight.propertymanage.adapter;

import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter;

import com.spaceflight.propertymanage.holder.ViewHolder;

import java.util.List;

/**

• 通用适配器
• Created by rootBing on 2017/11/30 0030. */

public abstract class CommonAdapter<T> extends BaseAdapter {

protected Context mContext;
protected List<T> mData;
protected int mLayoutId;

public CommonAdapter(Context context, List<T> data, int layoutId) {
    mContext = context;
    mData = data;
    mLayoutId = layoutId;
}

@Override
public int getCount() {
    return mData.size();
}

@Override
public T getItem(int i) {
    return mData.get(i);
}

@Override
public long getItemId(int i) {
    return i;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder = ViewHolder.getHolder(mContext, convertView, mLayoutId, parent, position);
    convert(holder, position);
    return holder.getConvertView();
}

/**
 * get holder convert
 */
public abstract void convert(ViewHolder holder, int position);

}

package com.spaceflight.propertymanage.holder;

import android.content.Context;
import android.graphics.Bitmap;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * 公共 ViewHolder
 * Created by rootBing on 2017/11/30 0030.
 */

public class ViewHolder {

    private SparseArray<View> mViews;
    private Context mContext;
    private View mConvertView;
    private int mPosition;
    /**
     * init holder
     */
    public ViewHolder(Context context, int layoutId, ViewGroup parent, int position) {
        mConvertView = LayoutInflater.from(context).inflate(layoutId,parent,false);
        mViews = new SparseArray<>();
        mPosition = position;
        mConvertView.setTag(this);
    }

    /**
     *  获取viewHolder
     */
    public static ViewHolder getHolder(Context context, View convertView,
                                       int layoutId, ViewGroup parent, int position) {
        if(convertView == null){
            return new ViewHolder(context,layoutId,parent,position);
        }else{
            ViewHolder holder = (ViewHolder)convertView.getTag();
            holder.mPosition = position;
            return holder;
        }
    }

    public View getConvertView(){
        return mConvertView;
    }

    /**
     * get view
     */
    public <T extends View> T getView(int viewId){
        View view = mViews.get(viewId);
        if(view == null){
            view = mConvertView.findViewById(viewId);
            mViews.put(viewId,view);
        }
        return (T)view;
    }

    /**
     * set text
     */
    public ViewHolder setText(int viewId, String text){
        TextView tv = getView(viewId);
        tv.setText(text);
        return this;
    }

    /**
     *  set image res
     */
    public ViewHolder setImageResource(int viewId,int resId){
        ImageView iv = getView(viewId);
        iv.setImageResource(resId);
        return this;
    }

    /**
     *  set image bitmap
     */
    public ViewHolder setImageBitmap(int viewId,Bitmap bitmap){
        ImageView iv = getView(viewId);
        iv.setImageBitmap(bitmap);
        return this;
    }
}