private String getInstalledAppListAsString(){
    PackageManager pm = context.getPackageManager();
    List<ApplicationInfo> apps = pm.getInstalledApplications(PackageManager.GET_GIDS);
    StringBuffer stringBuffer = new StringBuffer();
    for (ApplicationInfo app : apps) {
      if(pm.getLaunchIntentForPackage(app.packageName) != null) {
        // apps with launcher intent
        if((app.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) == 1) {
          // updated system apps
 
        } else if ((app.flags & ApplicationInfo.FLAG_SYSTEM) == 1) {
          // system apps
 
        } else {
          // user installed apps
          stringBuffer.append(app.packageName).append(';');
        }
      }
    }
    return stringBuffer.toString();
  }

package cn.lyz.mobilesafe.domain;

import android.graphics.drawable.Drawable;

/**
 * 获取的应用基本信息实体类
 * @author liuyazhuang
 *
 */
public class AppInfo {
 //图标
 private Drawable app_icon;
 //应用名称
 private String app_name;
 //应用版本号
 private String app_version;
 //应用包名
 private String packagename;
 //是否是用户app
 private boolean isUserApp;
 
 
 public AppInfo() {
  super();
  // TODO Auto-generated constructor stub
 }
 public AppInfo(Drawable app_icon, String app_name, String app_version,
   String packagename) {
  super();
  this.app_icon = app_icon;
  this.app_name = app_name;
  this.app_version = app_version;
  this.packagename = packagename;
 }
 
 
 public AppInfo(Drawable app_icon, String app_name, String app_version,
   String packagename, boolean isUserApp) {
  super();
  this.app_icon = app_icon;
  this.app_name = app_name;
  this.app_version = app_version;
  this.packagename = packagename;
  this.isUserApp = isUserApp;
 }
 public Drawable getApp_icon() {
  return app_icon;
 }
 public void setApp_icon(Drawable app_icon) {
  this.app_icon = app_icon;
 }
 public String getApp_name() {
  return app_name;
 }
 public void setApp_name(String app_name) {
  this.app_name = app_name;
 }
 public String getApp_version() {
  return app_version;
 }
 public void setApp_version(String app_version) {
  this.app_version = app_version;
 }
 public String getPackagename() {
  return packagename;
 }
 public void setPackagename(String packagename) {
  this.packagename = packagename;
 }
 
 public boolean isUserApp() {
  return isUserApp;
 }
 public void setUserApp(boolean isUserApp) {
  this.isUserApp = isUserApp;
 }
 
 @Override
 public String toString() {
  return "AppInfo [app_icon=" + app_icon + ", app_name=" + app_name
    + ", app_version=" + app_version + ", packagename="
    + packagename + ", isUserApp=" + isUserApp + "]";
 }
}