Environment.getExternalStorageDirectory().getAbsolutePath() gives a different path - Android
I try to write something into my phone memory.
At first, I hard-coded the path as:
myFile = new File("/sdcard/" + txtName.getText() + ".txt");
This works totally ok.
And then, eclipse gives me a warning saying that I shouldn't have hard-coded the path like that instead, I should do the following:
myFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/"+ txtName.getText() + ".txt");
Then I follow the correction suggestion and avoid the warning.
However, I encountered a runtime exception on the writer class.
Then, I print out Environment.getExternalStorageDirectory().getAbsolutePath() for debugging purpose. The result is
/storage/sdcard0
. But the hardcoded one that worked perfectly fine before is actually
/sdcard
.
Why would this happen?
And if I wish to avoid the warning, how can I get the path directory in a more "formal and right" way instead of hardcoding the path?
P.S.: My phone is HTC One X, which has NO external SD card slot. I guess the 32GB storage comes with a built-in SD card, and therefore, the essence should be the same.
Answer
Why would this happen?
Because the path to external storage has changed over the years, which is why you should have never hard-coded the path in the first place.
how can I get the path directory in a more "formal and right" way instead of hardcoding the path?
Use Environment.getExternalStorageDirectory().
On your test environment, /sdcard is a symlink or hardlink to /storage/sdcard0, as set up by the device manufacturer. However, there is no guarantee that all devices will have such an /sdcard symlink.
I guess the 32GB storage comes with a built-in SD card
External storage is a portion of your on-board 32GB of flash memory.