Wouldn't it make more sense to see if the SQLite opening fails?
If it fails, wait 20 seconds or so and try again.
On Friday, October 19, 2012 1:46:23 PM UTC-5, Bill Michaelson wrote:
>
> To answer my own question, I think I'm looking for code like that below.
>
> public void waitForExternalStorage()
> {
>
> while(Environment.getExternalStorageState().equals(Environment.MEDIA_CHECKING))
> {
> try { Thread.sleep(1000L); }
> catch(InterruptedException e) { e.printStackTrace(); }
> }
> }
>
>
> Alternately, I can wait for a broadcast of Intent.ACTION_MEDIA_MOUNTED.
>
> Have I got the right? And is there anything else I should be wary of in
> this start-at-boot scenario?
>
> On Friday, October 19, 2012 1:13:43 PM UTC-4, Bill Michaelson wrote:
>>
>> I recently modified an application such that a component Service is now
>> started upon device boot via RECEIVE_BOOT_COMPLETED. But when the service
>> started, I encountered a problem with sqlite opening - a failure that was
>> critical to the application. Upon examining adb logcat output, I noticed
>> messages that announced phases of fsck operating, and implying that fsck
>> did not complete until after my sqlite open failure. I assumed that the
>> underlying file was inaccessible because my app started too early relative
>> to fsck. Based on this hunch, I inserted a 5 second Thread.sleep() into
>> the start sequence. This seems to have solved the problem.
>>
>> But I am unsatisfied for two reasons:
>>
>> 1) My fix is non-deterministic. There is no guarantee that 5 seconds
>> will always be adequate, or theoretically, that any arbitrary delay is
>> sufficient.
>> 2) I have not absolutely determined a causal relationship between the
>> fsck and the open failure.
>>
>> Ideally, I will delay start until precisely the moment that the OS and
>> supporting processes are adequately prepared.
>>
>> So I seek advice from a more imaginative, knowledgeable or experienced
>> developer.
>>
>> TIA
>>
>>
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