Android:FileObserver 只监控顶级目录

问题描述

根据文档，

"Each FileObserver instance monitors a single file or directory. If a directory is monitored,
events will be triggered for all files and subdirectories inside the monitored directory."

我的代码是这样的，

    FileObserver fobsv = new FileObserver("/mnt/sdcard/") {

    @Override
    public void onEvent(int event, String path) {
        System.out.println(event+"    "+path);
    }
    };
    fobsv.startWatching();

但是，onEvent() 仅在 /mnt/sdcard/ 中的文件发生更改时触发.如果我在 /mnt/sdcard/downloads/ 中创建一个文件，该方法不会被触发.

However, the onEvent() is triggering only when a file is changed in the /mnt/sdcard/. If I create a file in /mnt/sdcard/downloads/, the method is not getting fired.

代码有问题吗?

推荐答案

文档不正确，如此问题中所述.

代码有问题吗?

不，但是 FileObserver 不是递归的，尽管文档相反.

No, but FileObserver is not recursive, despite the documentation to the contrary.

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