android手机已安装软件列表-packages List

public ArrayList<PackagesInfo> getInstalledApps(boolean getSysPackages)
    { 
        ArrayList<PackagesInfo> res = new ArrayList<PackagesInfo>();         
        List<PackageInfo> packs = getPackageManager().getInstalledPackages(0); 
        for(int i=0;i<packs.size();i++)
        { 
               PackageInfo p = packs.get(i); 
               if ((!getSysPackages) && (p.versionName == null))
               { 
                      continue ; 
               }     
               PackagesInfo info = new PackagesInfo(); 
               info.setAppname(p.applicationInfo.loadLabel(getPackageManager()).toString());
               info.setPackgeName(p.packageName);
               info.setVersionCode(p.versionCode);
               info.setVersionName(p.versionName);
               info.setIcon(p.applicationInfo.loadIcon(getPackageManager()));
               res.add(info); 
        } 
        return res;  
  }


mocel:  PackagesInfo

    private String packgeName;
   
    private String versionName;
   
    private int versionCode;
   
    private String appname;
   
    private Drawable icon;



/**
     * 获取安装程序列表
     */
    public ArrayList<PackagesInfo> getInstalledApps(Context context,boolean getSysPackages)
    { 
        ArrayList<PackagesInfo> packages = new ArrayList<PackagesInfo>();         
        List<PackageInfo> packs = context.getPackageManager().getInstalledPackages(0); 
        for(int i = 0; i < packs.size(); i++)
        { 
               PackageInfo p = packs.get(i); 
               if ((!getSysPackages) && (p.versionName == null))
               { 
                      continue ; 
               }     
               PackagesInfo info = new PackagesInfo(); 
               info.setAppname(p.applicationInfo.loadLabel(context.getPackageManager()).toString());
               info.setPackgeName(p.packageName);
               info.setVersionCode(p.versionCode);
               info.setVersionName(p.versionName);
               info.setIcon(p.applicationInfo.loadIcon(context.getPackageManager()));
               packages.add(info); 
        } 
        return packages;  
  }

本应用中打开其他的程序
一、使用Intent的setComponent方法
Intent intent = new Intent();
intent.setComponent(new ComponentName(“包名”, “包名.主类名”));
intent.setAction(Intent.ACTION_VIEW);
startActivity(intent);
二、使用包管理器
Intent intent = new Intent();
intent = getPackageManager().getLaunchIntentForPackage(“包名”);
startActivity(intent);

可以根据(packageInfo.applicationInfo.flags&ApplicationInfo.FLAG_SYSTEM)判断其是不是为0可以判断是不是系统程序
    //显示非系统软件                  if((packageInfo.applicationInfo.flags&ApplicationInfo.FLAG_SYSTEM)==0){ 
                    map.put("img", packageInfo.applicationInfo.loadIcon(getPackageManager()).getCurrent()); 
                    map.put("name", packageInfo.applicationInfo.loadLabel(getPackageManager()).toString()); 
                    map.put("desc", packageInfo.packageName); 
                    listMap.add(map); 
                }