欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  移动技术

Android编程实现在adapter中进行数据操作的方法

程序员文章站 2023-12-17 09:52:22
本文实例讲述了android编程实现在adapter中进行数据操作的方法。分享给大家供大家参考,具体如下: package com.cvte.apkclassif...

本文实例讲述了android编程实现在adapter中进行数据操作的方法。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数据库操作技巧总结》、《android编程之activity操作技巧总结》、《android文件操作技巧汇总》、《android编程开发之sd卡操作方法汇总》、《android开发入门与进阶教程》、《android资源操作技巧汇总》、《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。

上一篇:

下一篇: