How can i select file on phone not sdcard?

Question

I mean I want to define a file path on phone memory not sdcard.

I want to use this :

FileOutputStream out3 = new FileOutputStream(Environment.getRootDirectory()+"/a/b.txt");

this gives error.
How can i fix this? thanks.

error

 09-26 19:49:11.050: E/AndroidRuntime(20214): FATAL EXCEPTION: main
09-26 19:49:11.050: E/AndroidRuntime(20214): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.kelime.tekerrur/com.example.kelime.tekerrur.MainActivity}: java.lang.NullPointerException
09-26 19:49:11.050: E/AndroidRuntime(20214):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1967)
09-26 19:49:11.050: E/AndroidRuntime(20214):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
09-26 19:49:11.050: E/AndroidRuntime(20214):    at android.app.ActivityThread.access$600(ActivityThread.java:127)
09-26 19:49:11.050: E/AndroidRuntime(20214):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
09-26 19:49:11.050: E/AndroidRuntime(20214):    at android.os.Handler.dispatchMessage(Handler.java:99)
09-26 19:49:11.050: E/AndroidRuntime(20214):    at android.os.Looper.loop(Looper.java:137)

score 2 · Answer 1 · answered Sep 26 '12 at 09:30

2

To get the SD-Card path you have to use Environment.getExternalStorageDirectory()
The Environment.getRootDirectory() which Mukesh suggested returns the device root "/" - you can't write (or read) in this Directory on a non-rooted-device.

answered Sep 26 '12 at 09:30

Thommy

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score 1 · Accepted Answer · answered Sep 26 '12 at 09:20

1

You can try this -

File imgFile = new File(Environment.getRootDirectory()+“/test_image.jpg”);

answered Sep 26 '12 at 09:20

Mukesh Soni

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so, if I write like this : new File(Environment.getRootDirectory()+“/aaa/test_image.jpg”); it creates aaa directory if it does not exist or I manually create aaa directory? – CompEng Sep 26 '12 at 10:08
FileOutputStream out3 = new FileOutputStream(Environment.getRootDirectory()+"/a/b.txt"); this gives error. error is null – CompEng Sep 26 '12 at 16:43
maybe the directory 'a' is not yet created. Try this - File dir = new File(root.getRootDirectory() + "/a"); if(!dir.exists()) { dir.mkdirs(); } – Mukesh Soni Sep 26 '12 at 16:47
I already did but it doesnt work. root.getRootDirectory() return system/a/ – CompEng Sep 26 '12 at 16:50
it says out3 is null. why out3 is null – CompEng Sep 26 '12 at 16:55
File myFile = new File(Environment.getRootDirectory()+“/a/b.txt”); File dir = new File(root.getRootDirectory() + "/a"); if(!dir.exists()) { dir.mkdirs(); } FileOutputStream out3 = new FileOutputStream(myFile); – Mukesh Soni Sep 26 '12 at 17:02
that is what i was thinking. Why not write to sdcard – Mukesh Soni Sep 26 '12 at 17:07
because some phones doesn have sdcard – CompEng Sep 26 '12 at 17:10
are you trying it on emulator or a real phone? – Mukesh Soni Sep 26 '12 at 17:13
I think i have reached my android limits here :(. Do let me know if you get a solution. – Mukesh Soni Sep 26 '12 at 17:19

How can i select file on phone not sdcard?

2 Answers2