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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