根据oceanuz提供的路径,我编写了一个方法,它可以定位外部存储路径(忽略大小写)并将其作为字符串返回。
注意:我在我的方法中使用了
StreamSupport库,所以为了使其正常工作,您需要下载jar文件并将其添加到项目的libs文件夹中,就这样。
public static String getExternalSdPath(Context context) {
List<String> listOfFoldersToSearch = Arrays.asList("/storage/", "/mnt/", "/removable/", "/data/");
List<String> listOf2DepthFolders = Arrays.asList("sdcard0", "media_rw", "removable");
List<String> listOfExtFolders = Arrays.asList("sdcard1", "extsdcard", "external_sd", "microsd", "emmc", "ext_sd", "sdext",
"sdext1", "sdext2", "sdext3", "sdext4");
final String[] thePath = {""};
Optional<File> optional = StreamSupport.stream(listOfFoldersToSearch)
.filter(s -> {
File folder = new File(s);
return folder.exists() && folder.isDirectory();
})
.flatMap(s -> {
try {
List<File> files = Arrays.asList(new File(s).listFiles());
return StreamSupport.stream(files);
} catch (NullPointerException e) {
return StreamSupport.stream(Collections.emptyList());
}
})
.flatMap(file1 -> {
if (listOf2DepthFolders.contains(file1.getName().toLowerCase())) {
try {
List<File> files = Arrays.asList(file1.listFiles());
return StreamSupport.stream(files);
} catch (NullPointerException e) {
return StreamSupport.stream(Collections.singletonList(file1));
}
} else
return StreamSupport.stream(Collections.singletonList(file1));
})
.filter(o -> listOfExtFolders.contains(o.getName().toLowerCase()))
.findFirst();
optional.ifPresent(file -> thePath[0] = file.getAbsolutePath());
Log.i("Path", thePath[0]);
return thePath[0];
}
如果没有找到SD卡路径,此方法将返回一个空字符串。
/etc/vold.fstab
文件,该文件包含所有真实的外部存储设备。 - zapl