Transfer App to Samsung Galaxy Tab issue
<p>I have been developing an application on the HTC desire. It runs fine. The application when a button is clicked downloads a file from the my web server and saves it onto the SD card.</p>

<p>I now want to run this application on my Samsung Galaxy Tab. However, is crashes when i click on the button.</p>

<p>The only reason i can see is that the tab is not allowing access to the SD Card. It is the same SD Card i had in the HTC Deisre phone and it is not write protected or anything?</p>

<p>Anyone know what can be wrong?</p>

<p>This is the code i am using to download a file and store it on the card...</p>

<pre><code> class CreatefilesTask extends AsyncTask&lt;Object, Integer, Boolean&gt; {
    protected Boolean doInBackground(Object... arg0) {
        try{
            URL url  = new URL("http://213.143.36.32/file.csv");
            URLConnection conexion = url.openConnection();
            conexion.connect();
            int lenghtOfFile = conexion.getContentLength();
            InputStream is = url.openStream();
            File testDirectory = 
            new File(Environment.getExternalStorageDirectory()+"/File");
            if(!testDirectory.exists()){
                testDirectory.mkdir();
            }
            FileOutputStream fos = new FileOutputStream(testDirectory+"/file.csv");
            byte data[] = new byte[1024];
            int count = 0;
            long total = 0;
            int progress = 0;
            while ((count=is.read(data)) != -1){
                total += count;
                int progress_temp = (int)total*100/lenghtOfFile;
                if(progress_temp%10 == 0 &amp;&amp; progress != progress_temp){
                    progress = progress_temp;
                }
                fos.write(data, 0, count);
            }
            is.close();
            fos.close();
        }
        catch(Exception e){
            e.printStackTrace();
        }
</code></pre>

<p>This works fine on the Desire.</p>

<p>StackTrace..</p>

<pre><code>03-31 12:45:07.823: INFO/PowerManagerService(2494): Ulight 3-&gt;7|0
03-31 12:45:07.831: VERBOSE/WindowManager(2494): Delivering toWindow{48419208 com.android.qservices/com.android.qservices.AdminActivity paused=false}
03-31 12:45:07.898: VERBOSE/WindowManager(2494): Delivering toWindow{48419208 com.android.qservices/com.android.qservices.AdminActivity paused=false}
03-31 12:45:08.261: WARN/System.err(5314): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
03-31 12:45:08.261: WARN/System.err(5314):     at android.os.Handler.&lt;init&gt;(Handler.java:121)
03-31 12:45:08.265: WARN/System.err(5314):     at android.widget.Toast.&lt;init&gt;(Toast.java:77)
03-31 12:45:08.265: WARN/System.err(5314):     at android.widget.Toast.makeText(Toast.java:266)
03-31 12:45:08.269: WARN/System.err(5314):     at com.android.qservices.AdminActivity$CreatefilesTask.doInBackground(AdminActivity.java:117)
03-31 12:45:08.269: WARN/System.err(5314):     at com.android.qservices.AdminActivity$CreatefilesTask.doInBackground(AdminActivity.java:1)
03-31 12:45:08.269: WARN/System.err(5314):     at android.os.AsyncTask$2.call(AsyncTask.java:185)
03-31 12:45:08.269: WARN/System.err(5314):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
03-31 12:45:08.273: WARN/System.err(5314):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
03-31 12:45:08.273: WARN/System.err(5314):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
03-31 12:45:08.273: WARN/System.err(5314):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
03-31 12:45:08.273: WARN/System.err(5314):     at java.lang.Thread.run(Thread.java:1096)
03-31 12:45:08.280: WARN/System.err(5314): java.io.FileNotFoundException: /mnt/sdcard/File/file.csv (No such file or directory)
03-31 12:45:08.284: WARN/System.err(5314):     at org.apache.harmony.luni.platform.OSFileSystem.openImpl(Native Method)
03-31 12:45:08.284: WARN/System.err(5314):     at org.apache.harmony.luni.platform.OSFileSystem.open(OSFileSystem.java:152)
03-31 12:45:08.288: WARN/System.err(5314):     at java.io.FileInputStream.&lt;init&gt;(FileInputStream.java:82)
03-31 12:45:08.288: WARN/System.err(5314):     at com.android.qservices.AdminActivity$CreatefilesTask.doInBackground(AdminActivity.java:148)
03-31 12:45:08.288: WARN/System.err(5314):     at com.android.qservices.AdminActivity$CreatefilesTask.doInBackground(AdminActivity.java:1)
03-31 12:45:08.288: WARN/System.err(5314):     at android.os.AsyncTask$2.call(AsyncTask.java:185)
03-31 12:45:08.292: WARN/System.err(5314):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
03-31 12:45:08.292: WARN/System.err(5314):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
03-31 12:45:08.292: WARN/System.err(5314):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
03-31 12:45:08.296: WARN/System.err(5314):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
03-31 12:45:08.296: WARN/System.err(5314):     at java.lang.Thread.run(Thread.java:1096)
</code></pre>
