I see. I would like to know what form has the real name of the temp file,
if you have seen it sometimes.
I could use this instruction:
file=File.createTempFile(fileName"+"_",".ext");
to have something resembling a user-created file name. It will have a
strange string in the middle I suppose, like:
myfilename_vjh4v444vjhv4j45445h4j5.ext
Is it right?
Regards
Il giorno domenica 20 dicembre 2020 alle 02:58:03 UTC+1 Shai Almog ha
scritto:
> 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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