Android编程实现在adapter中进行数据 *** 作的方法

概述本文实例讲述了Android编程实现在adapter中进行数据 *** 作的方法。分享给大家供大家参考，具体如下：

本文实例讲述了AndroID编程实现在adapter中进行数据 *** 作的方法。分享给大家供大家参考，具体如下：

package com.cvte.apkclassify;import java.util.ArrayList;import androID.content.Context;import androID.content.pm.ApplicationInfo;import androID.content.pm.PackageInfo;import androID.content.pm.PackageManager;import androID.content.pm.PackageManager.nameNotFoundException;import androID.graphics.drawable.Drawable;import androID.util.Log;import androID.vIEw.LayoutInflater;import androID.vIEw.VIEw;import androID.vIEw.VIEwGroup;import androID.Widget.BaseAdapter;import androID.Widget.ImageVIEw;import androID.Widget.TextVIEw;public class ItemAdapter extends BaseAdapter {  private Context context;  private LayoutInflater inflater;  private PackageManager pManager ;  private ArrayList<PackageInfo> apps;  private ArrayList<ApkBean> allApkBeans;  private ApkBean bean = new ApkBean();  private dbutils utils ;  private ApplicationInfo appinfo;  private static int ll = 1;  public ItemAdapter(Context c) {    super();    this.context = c;    pManager = context.getPackageManager();    apps = (ArrayList<PackageInfo>) GetAllAppInfo.getAllapps(context);    utils = new dbutils(context);    allApkBeans = (ArrayList<ApkBean>) utils.getAllRecords();    for (int i = 0; i < apps.size(); i++) {      bean = new ApkBean();      bean.setApkname(pManager.getApplicationLabel(apps.get(i).applicationInfo).toString());      bean.setKind(0);      bean.setPackagename(apps.get(i).applicationInfo.packagename);      utils.insert(bean);    }  }  @OverrIDe  public int getCount() {    // Todo auto-generated method stub    return apps.size();  }  @OverrIDe  public Object getItem(int position) {    // Todo auto-generated method stub    return apps.get(position);  }  @OverrIDe  public long getItemID(int position) {    // Todo auto-generated method stub    return 0;  }  @OverrIDe  public VIEw getVIEw(int position,VIEw vIEw,VIEwGroup parent) {    VIEwHolder holder = null;    inflater = LayoutInflater.from(context);    if (vIEw==null) {      holder = new VIEwHolder();      vIEw = inflater.inflate(R.layout.Listitem,null);      holder.apkimage = (ImageVIEw)vIEw.findVIEwByID(R.ID.apkimage);      holder.apkname =(TextVIEw)vIEw.findVIEwByID(R.ID.apkname);      holder.result = (TextVIEw)vIEw.findVIEwByID(R.ID.result);      vIEw.setTag(holder);    }else{      holder=(VIEwHolder)vIEw.getTag();    }    if (allApkBeans==null||allApkBeans.size()==0) {      PackageInfo pinfo = apps.get(position);      String name = pManager.getApplicationLabel(pinfo.applicationInfo).toString();      holder.apkimage.setBackgroundDrawable(pManager.getApplicationIcon(pinfo.applicationInfo));      holder.apkname.setText(name);      holder.result.setText("未分类");    }else{      ApkBean bean = allApkBeans.get(position);      holder.apkimage.setBackgroundDrawable( getIconFromPackagename(bean.getPackagename()));      holder.apkname.setText(bean.getApkname());      if (bean.getKind()!=0) {        holder.result.setText("已经分类");      }else{        holder.result.setText("未分类");      }    }    return vIEw;  }  class VIEwHolder{    public ImageVIEw apkimage;    public TextVIEw apkname;    public TextVIEw result;  }  private Drawable getIconFromPackagename(String name){    Drawable image = null ;    try {      appinfo = pManager.getApplicationInfo(name,PackageManager.GET_Meta_DATA);      image = pManager.getApplicationIcon(appinfo);    } catch (nameNotFoundException e) {      Log.i("no packagename","no packagename");    }    return image;  }}

更多关于AndroID相关内容感兴趣的读者可查看本站专题：《Android数据库 *** 作技巧总结》、《Android编程之activity *** 作技巧总结》、《Android文件 *** 作技巧汇总》、《Android编程开发之SD卡 *** 作方法汇总》、《Android开发入门与进阶教程》、《Android资源 *** 作技巧汇总》、《Android视图View技巧总结》及《Android控件用法总结》

希望本文所述对大家AndroID程序设计有所帮助。

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