如何在android中对数组/列表进行排序并返回结果？

我正在使用可扩展列表视图来显示应用程序中的文件夹和文件。然而，由于我的应用程序允许用户添加文件，列表将变得混乱。因此，我的意图是将排序列表（在名称中）设置为我的子列表

我知道有Arrays.sort和Collections.sort，但这两个方法都是void，而不是返回列表

那我该怎么做呢

我的名单：

    private File recordImageFolder = new File (Environment.getExternalStorageDirectory(),"/Record/Image");
    private File recordSoundFolder = new File (Environment.getExternalStorageDirectory(),"/Record/Sound");

    private String[] groups = { "Image", "Sound" };
    private String[][] children = { recordImageFolder.list(), recordSoundFolder.list() };

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不必在声明中初始化这些字段成员，您可以在构造函数或init方法中初始化它们，从而允许您使用

数组。排序（Object[]）

：

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呃。。。。你提供的代码根本不起作用。当我放置组={“Image”，“Sound”}时，它包含错误“数组常量只能用于初始值设定项”；用另一种方法

private File recordImageFolder;
private File recordSoundFolder;

private String[] groups;
private String[][] children;

public MyClass() {

    recordImageFolder = new File (Environment.getExternalStorageDirectory(),"/Record/Image");
    recordSoundFolder = new File (Environment.getExternalStorageDirectory(),"/Record/Sound");

    String[] recordImages = recordImageFolder.list();
    String[] recordSounds = recordSoundFolder.list();

    Arrays.sort(recordImages);
    Arrays.sort(recordSounds);

    groups = new String[] { "Image", "Sound" };
    children = new String[][] { recordImages, recordSounds };
}