搜索整个SD卡特定文件 [英] Search entire sdcard for a specific file

问题描述

我知道如何查找文件，但使用特定的路径，例如/ SD卡/图片/文件。有没有一种方法来搜索特定的文件。示例：搜索文件。然后应用程序找到它在/ SD卡/图片。然后将它抹去。

I know how to search a file, but using a specific path, example /sdcard/picture/file. Is there a way to search for that specific file. Example: search for file. Then the app locate it in /sdcard/picture. Then erase it.

任何帮助吗？谢谢（我知道如何删除一个文件，但必须写的完整路径）

Any help? Thanks (I know how to erase a file, but have to write the entire path)

推荐答案

可以解决这个问题递归从外部存储/ SD卡的根目录开始。

You can solve that problem recursively starting from the root directory of the external storage / SD card.

一些未经检验的code我的头了（方法名可能是错误的）

Some untested code out of my head (method names could be wrong)

public File findFile(File dir, String name) {
    File[] children = dir.listFiles();

    for(File child : children) {
        if(child.isDirectory()) {
           File found = findFile(child, name);
           if(found != null) return found;
        } else {
            if(name.equals(child.getName())) return child;
        }
    }

    return null;
}

如果你想找到的所有的SD卡上出现的文件名，你将不得不使用一个列表，用于收集并返回找到的所有比赛。

If you want to find all occurrences of that file name on your SD card you'll have to use a List for collecting and returning all found matches.

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