There's a minimum length to the temp file prefix/sufix. As far as I recall
you can't create the file with blank prefix/suffix but I might be wrong.
It very likely won't work and I would avoid mixing temp files and regular
files. Temp files can reside on a different volume and renaming them to a
regular file might not work.
On Saturday, December 19, 2020 at 5:20:09 PM UTC+2 P5music wrote:
> Is this going to be working as described?
> ....
> ....
> try {
> file=File.createTempFile("","");
> String
> path=file.getAbsolutePath().substring(0,file.getAbsolutePath().lastIndexOf("/"));
> File oldFile=new File(path+"/"+fileName+".ext");
> if (oldFile.exists()) {
> oldFile.delete();
> file=File.createTempFile("","");
> }
>
> file.renameTo(oldFile);
>
> OutputStream os = Storage.getInstance
> ().createOutputStream(file.getAbsolutePath());
> ....
> ....
> Il giorno sabato 19 dicembre 2020 alle 06:54:54 UTC+1 Shai Almog ha
> scritto:
>
>> Yes but then you might as well just create a non-temporary file with a
>> specific name and clear it when the app exits or periodically. You can
>> create a folder to store these files and wipe it occasionally.
>>
>> On Friday, December 18, 2020 at 10:47:40 AM UTC+2 P5music wrote:
>>
>>> Ok
>>> Can the temporary file be renamed with the entered filename? This is for
>>> the user to see and attach a file with a meaningful name.
>>> Thanks
>>>
>>> Il giorno venerdì 18 dicembre 2020 alle 05:53:46 UTC+1 Shai Almog ha
>>> scritto:
>>>
>>>> No. That's not a file name. That's a prefix and suffix. The actual name
>>>> would be longer.
>>>>
>>>> On Thursday, December 17, 2020 at 11:06:00 AM UTC+2 P5music wrote:
>>>>
>>>>>
>>>>> I want to know whether the creation of a temp file with that method
>>>>> will give an error if the file already exists with that file name.
>>>>> I think that the file name is not random because it is a parameter of
>>>>> the createTempFile method, is it?
>>>>>
>>>>> Il giorno giovedì 17 dicembre 2020 alle 04:35:55 UTC+1 Shai Almog ha
>>>>> scritto:
>>>>>
>>>>>> You need to save a reference to the created temp file to check if it
>>>>>> exists as the name is random.
>>>>>>
>>>>>> On Wednesday, December 16, 2020 at 12:52:09 PM UTC+2 P5music wrote:
>>>>>>
>>>>>>> Maybe what I am saying does not make sense, but if I create the temp
>>>>>>> file I am already going to get an error if the file exists.
>>>>>>> So I should use
>>>>>>> file=new File(fileName+".ext");
>>>>>>>
>>>>>>> and then create it with
>>>>>>> if (!file.exists()) file=File.createTempFile(fileName,"ext");
>>>>>>> ?
>>>>>>> Regards
>>>>>>>
>>>>>>> Il giorno mercoledì 16 dicembre 2020 alle 04:45:37 UTC+1 Shai Almog
>>>>>>> ha scritto:
>>>>>>>
>>>>>>>> I don't follow?
>>>>>>>> What's the problem with exists() ?
>>>>>>>>
>>>>>>>> On Tuesday, December 15, 2020 at 10:41:21 AM UTC+2 P5music wrote:
>>>>>>>>
>>>>>>>>> Excuse me, I have another question about this.
>>>>>>>>> The app has to check if the file is already present. It could
>>>>>>>>> happen when the user types the same file name before the temp
>>>>>>>>> directory has
>>>>>>>>> been emptied.
>>>>>>>>> So I have to check it and delete before creating it again.
>>>>>>>>> But I wonder if temp files are special files, how to check it
>>>>>>>>> without any uncertainty?
>>>>>>>>> Thanks
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Il giorno martedì 15 dicembre 2020 alle 05:16:12 UTC+1 Shai Almog
>>>>>>>>> ha scritto:
>>>>>>>>>
>>>>>>>>>> It should. But the only way to make 100% sure is to test on the
>>>>>>>>>> device.
>>>>>>>>>>
>>>>>>>>>> On Monday, December 14, 2020 at 1:25:33 PM UTC+2 P5music wrote:
>>>>>>>>>>
>>>>>>>>>>> I would like to know if this code snippet will work on iOS.
>>>>>>>>>>> I want to use the message send feature to export some
>>>>>>>>>>> application data.
>>>>>>>>>>> The user is asked for the filename, then a temporary file is
>>>>>>>>>>> created containing the JSON text to be exported (with a custom file
>>>>>>>>>>> extension), then that file is used to create an output stream and
>>>>>>>>>>> attached
>>>>>>>>>>> like plain text (or should the json mimetype be used?), with no
>>>>>>>>>>> subject and
>>>>>>>>>>> no recipients.
>>>>>>>>>>> Thanks in advance
>>>>>>>>>>>
>>>>>>>>>>> try {
>>>>>>>>>>> file=File.createTempFile(fileName,"ext");
>>>>>>>>>>>
>>>>>>>>>>> OutputStream os =
>>>>>>>>>>> Storage.getInstance().createOutputStream(file.getAbsolutePath());
>>>>>>>>>>> os.write(text.getBytes("UTF-8"));
>>>>>>>>>>> os.flush();
>>>>>>>>>>> os.close();
>>>>>>>>>>> } catch (IOException e) {
>>>>>>>>>>> return;
>>>>>>>>>>> }
>>>>>>>>>>> Message m = new Message("");
>>>>>>>>>>> m.getAttachments().put(file.getAbsolutePath(),
>>>>>>>>>>> "text/plain");
>>>>>>>>>>> Display.getInstance().sendMessage(new String[]
>>>>>>>>>>> {""}, "", m);
>>>>>>>>>>>
>>>>>>>>>>>
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