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;@Overridepublic 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);}@Overridepublic 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 extends BaseAdapter {

protected Context mContext;protected List mData;protected int mLayoutId;public CommonAdapter(Context context, List data, int layoutId) {    mContext = context;    mData = data;    mLayoutId = layoutId;}@Overridepublic int getCount() {    return mData.size();}@Overridepublic T getItem(int i) {    return mData.get(i);}@Overridepublic long getItemId(int i) {    return i;}@Overridepublic 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 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 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;    }}

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