Android解决getExternalStorageDirectory在29后废弃问题

File externalFileRootDir = context.getExternalFilesDir(null);
do {
    externalFileRootDir = Objects.requireNonNull(externalFileRootDir).getParentFile();
} while (Objects.requireNonNull(externalFileRootDir).getAbsolutePath().contains("/Android"));
String saveDir = Objects.requireNonNull(externalFileRootDir).getAbsolutePath();
mTempPhotoPathclone = saveDir + "/" + Environment.DIRECTORY_DCIM + "/" + System.currentTimeMillis()+".png";

//全部外部可用存储，通常作为媒体对用户不可见 返回Array<File>，null可以改为DIRECTORY_DCIM，DIRECTORY_DOCUMENTS，DIRECTORY_DOWNLOADS，DIRECTORY_PICTURES等
context.getExternalFilesDirs(null)
//少了个s 懂得都懂 当然是第一个File
context.getExternalFilesDir(null)
//外部不可用存储
context.getFilesDir()