[Android] Problema con richiesta internet

[fermat]

pure te hai in effetti ragione.
quindi, avendo messo il log sui catch, alla pressione del tasto:

13:11:42.068    36    #36    ERROR    SurfaceFlinger    ro.sf.lcd_density must be defined as a build property
13:11:44.878    277    system_process    ERROR    ThrottleService    problem during onPollAlarm: java.lang.IllegalStateException: problem parsing stats: java.io.FileNotFoundException: /proc/net/xt_qtaguid/iface_stat_all: open failed: ENOENT (No such file or directory)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas    Errore durante il download
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas    java.io.FileNotFoundException: /mnt/sdcard/CIMODA/clienti.xml: open failed: EACCES (Permission denied)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at libcore.io.IoBridge.open(IoBridge.java:416)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at java.io.FileOutputStream.(FileOutputStream.java:88)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at java.io.FileOutputStream.(FileOutputStream.java:128)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at java.io.FileOutputStream.(FileOutputStream.java:117)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at it.cimoda.DownloadFile.download(DownloadFile.java:18)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at it.cimoda.MainActivity$DownloadDatas.doInBackground(MainActivity.java:147)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at android.os.AsyncTask$2.call(AsyncTask.java:287)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at java.util.concurrent.FutureTask.run(FutureTask.java:234)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at java.lang.Thread.run(Thread.java:856)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas    Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at libcore.io.Posix.open(Native Method)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       at libcore.io.IoBridge.open(IoBridge.java:400)
13:11:57.207    852    it.cimoda    ERROR    DownloadDatas       ... 11 more