几个小时后,我做了两种方法来做到这一点。您应该将方法放在 aAsyncTask
或 aThread
中。所以这是我的两种方法:
public List<File> folderSearchBT(File src, String folder)
throws FileNotFoundException {
List<File> result = new ArrayList<File>();
File[] filesAndDirs = src.listFiles();
List<File> filesDirs = Arrays.asList(filesAndDirs);
for (File file : filesDirs) {
result.add(file); // always add, even if directory
if (!file.isFile()) {
List<File> deeperList = folderSearchBT(file, folder);
result.addAll(deeperList);
}
}
return result;
}
这是一种递归方法,它将src
参数中的所有文件夹添加到列表中。
我在此方法中使用此方法:
public String searchForBluetoothFolder() {
String splitchar = "/";
File root = Environment.getExternalStorageDirectory();
List<File> btFolder = null;
String bt = "bluetooth";
try {
btFolder = folderSearchBT(root, bt);
} catch (FileNotFoundException e) {
Log.e("FILE: ", e.getMessage());
}
for (int i = 0; i < btFolder.size(); i++) {
String g = btFolder.get(i).toString();
String[] subf = g.split(splitchar);
String s = subf[subf.length - 1].toUpperCase();
boolean equals = s.equalsIgnoreCase(bt);
if (equals)
return g;
}
return null; // not found
}
希望这会有所帮助,伙计们!