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Forum Discussion
what should be a file download path
what is the correct download path :
mDbxClient.files().download(Path =?);
mDbxClient.files().download("https://www.dropbox.com/home/Apps/AndroidDbAppStorage") .downloa...
details_item-that file i want to import
output:
java.lang.NullPointerException: Attempt to invoke virtual method 'long java.io.File.length()' on a null object reference
at line :
protected void onPostExecute(File result) {
super.onPostExecute(result);
if (result.length()!=0) {
Toast.makeText(mContext, "File downloaded", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(mContext, LoginActivity.class);
mContext.startActivity(intent);
} else {
}
}
java.lang.NullPointerException: Attempt to invoke virtual method 'long java.io.File.length()' on a null object reference
at line :
protected void onPostExecute(File result) {
super.onPostExecute(result);
if (result.length()!=0) {
Toast.makeText(mContext, "File downloaded", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(mContext, LoginActivity.class);
mContext.startActivity(intent);
} else {
}
}
- Greg-DB
Dropbox Staff
Thanks for sharing that error output! That shows that you're getting a 'NullPointerException' for the 'File result' in your 'onPostExecute'. That is, the object itself is null, which is not the same as saying the downloaded file has zero length.
You'll need to investigate why your code isn't actually returning the 'file' object. I suspect it's because something is going wrong with the downloading or writing of the file, but, upon closer inspection of your code, it seems you're not seeing it because you're silently throwing away potential exceptions here:
} catch (DbxException | IOException e) { }You should add error handling there to take handle any issues that may arise (e.g., if you don't have permission to write to the local file path you specified, etc.).
this is the error :
com.dropbox.core.v2.files.DownloadErrorException: Exception in 2/files/download: {".tag":"path","path":"not_found"}
- Greg-DB
kmsbs Please don't post the same question in multiple places. It makes it harder to keep track of your question(s), and can cause spam for other people on older threads.
I see you also posted a new thread for this, so I'll follow up there:
https://www.dropboxforum.com/t5/API-Support-Feedback/path-not-found-error/m-p/284453#M17409
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