screenshot saving as autogenerated file name

Question

I made a button to take the screenshot and save into Pictures folder. I set it as being saved under the name capture.jpeg but I wanted it to be saved as such as cafe001.jpeg

Answer 1

To save as another name just change the string "capture.jpeg"

If you want to have it as cafeXXX.jpeg (where XXX is a number) then you could do something like this (this method could potentially cause number overlaps however if files are deleted):

int count = 1;
File picturesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
File[] content = picturesDir.listFiles();
for (File f: content)
{
    if (f.getName().matches("cafe\\d+\\.jpeg"))
        count++;
}
//... your other code
// if leading zeros important then add formatting code to the count
fos = new FileOutputStream(picturesDir.toString() + "cafe"+count+".jpeg");

If you want a timeformat just use SimpleDateFormat changing the format String as required (as only going to day will mean you will only get time format per day)

String timeFileName = new SimpleDateFormat("yyyy-MM-dd").format(new Date())
//...other code
fos = new FileOutputStream(picturesDir.toString() + timeFileName+".jpeg");