如何整理List< PackageInfo>在android ..？

问题描述

List<PackageInfo> pkginfoList = getPackageManager()
                .getInstalledPackages(0);

如何排序 PackageInfo ，我做了 ApplicationInfo 运行正常

How to Sort the PackageInfo, i did ApplicationInfo thats working fine

Collections.sort(installedList, new ApplicationInfo.DisplayNameComparator(packageManager));

但我想实现 PackageInfo 也..

我不知道怎么做..请任何人帮助我......！

i'm not sure how to do.. Please any one help me...!

推荐答案

方法有两个参数：

1. 列表你想要排序


2. 并且对象，用于比较类型是列表中元素类型的元素。

1. The list you want to sort
2. And a Comparator object used to compare elements which type is the type of elements in your list.

在您的情况下你想实现一个比较器< PackageInfo> 。假设 PackagInfo 的示例有一个 getName（）方法：

In your case you want to implement a Comparator<PackageInfo>. An example supposing a PackagInfo has a getName() method:

new Comparator<PackagInfo>() {
    @Override
    public int compare(PackagInfo arg0, PackagInfo arg1) {
      return arg0.getName().compareTo(arg1.getName());
    }
 };

另一个解决方案是从某处获得一个，但我不熟悉Android。查看您提供的代码段，也许您有一个PackageInfo.xxxx静态字段，其类型为 Comparator< PackageInfo> ？

Another solution is to get one from somewhere but I don't know Android well. Looking at the piece of code you provided, maybe you have a PackageInfo.xxxx static field which type is Comparator<PackageInfo> ?

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