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POTrouble Creating a Directory on the SD Card
 

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    <p>I am trying to have my app create a directory on the root of the SD Card, if that directory does not already exist. When I run the app, the "Creating Home Directory..." toast notification displays, but the directory is not created... What am i doing wrong?? (P.S. permissions are set for writing to external storage)</p> <pre><code>public class Main extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // Check SD Card for Read/Write boolean mExternalStorageWriteable = false; String state = Environment.getExternalStorageState(); if (Environment.MEDIA_MOUNTED.equals(state)) { // We can read and write the media mExternalStorageWriteable = true; } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) { // We can only read the media mExternalStorageWriteable = false; } else { // Something else is wrong. It may be one of many other states, but all we need // to know is we can neither read nor write mExternalStorageWriteable = false; } if (mExternalStorageWriteable == false) { //Toast Notification that SD Card is not Accessible Context context = getApplicationContext(); CharSequence text = "SD Card is NOT Accessable, Please Remount and Try Again"; int duration = Toast.LENGTH_SHORT; Toast toast = Toast.makeText(context, text, duration); toast.show(); } else { //Check If Home Dir Exists boolean exists = (new File("/AndGuard/")).exists(); if (exists) { Context context = getApplicationContext(); CharSequence text = "Accessing Data Files..."; int duration = Toast.LENGTH_SHORT; Toast toast = Toast.makeText(context, text, duration); toast.show(); } else { Context context = getApplicationContext(); CharSequence text = "Creating Home Directory..."; int duration = Toast.LENGTH_SHORT; Toast toast = Toast.makeText(context, text, duration); toast.show(); // Create a directory; all non-existent ancestor directories are // automatically created // Create a directory; all non-existent ancestor directories are // automatically created File root = Environment.getExternalStorageDirectory(); boolean success = (new File(root,"directoryName")).mkdirs(); if (!success) { // Directory creation failed } } } </code></pre> <p>Here is my Manifest file:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="soapbox.sym3try.andguard" android:versionCode="1" android:versionName="1.0"&gt; &lt;application android:icon="@drawable/icon" android:label="@string/app_name"&gt; &lt;activity android:name=".Main" android:label="@string/app_name"&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"&gt;&lt;/uses-permission&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;uses-sdk android:minSdkVersion="4" /&gt; &lt;/manifest&gt; </code></pre> <p>I tried this as well, it didn't work, but it might be a step in the right direction as it creates the directory and populates it with a file from res/raw all in one step:</p> <pre><code> public boolean saveas(int ressound){ byte[] buffer=null; InputStream fIn = getBaseContext().getResources().openRawResource(ressound); int size=0; try { size = fIn.available(); buffer = new byte[size]; fIn.read(buffer); fIn.close(); } catch (IOException e) { // TODO Auto-generated catch block return false; } String path="/sdcard/AndGuard/List1"; String filename="hosts"; boolean exists = (new File(path)).exists(); if (!exists){new File(path).mkdirs();} FileOutputStream save; try { save = new FileOutputStream(path+filename); save.write(buffer); save.flush(); save.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block return false; } catch (IOException e) { // TODO Auto-generated catch block return false; } return exists; } </code></pre>
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    1. USFrank Bozzo
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    1. COConsider posting your manifest, so we can confirm your permission is set up properly.
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      1. USCommonsWare
    2. COAdded the manifest
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      1. USFrank Bozzo
 

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