Can't save a file to SD card

See more:

Java

Mobile

Android

Code:

String FILENAME = "settings";
String string = "hello world!";
File sdDir = new File(Environment.getExternalStorageDirectory().getPath());
File testDir = new File(sdDir.getAbsolutePath() + "/mobile_recont");
testDir.mkdir();

FILENAME = testDir + "/"+ FILENAME;
try {
    FileOutputStream fos = new FileOutputStream(FILENAME);
    fos.write(string.getBytes());
    fos.flush();
    fos.close();
    } catch (IOException e) {
Log.e("Controller", e.getMessage() + e.getLocalizedMessage() + e.getCause());
                    }

I also wrote in manifest:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

But get exception:

java.io.FileNotFoundException: /mnt/sdcard/mobile_recont/settings: open failed: EACCES (Permission denied)

and

Environment.getExternalStorageState() = "removed" 

Why? - SD card is correctly setted in emulator.
Please help.