Question

I try to download file from the internet with this method:

try { 
    URL url = new URL("http://sites.google.com/site/androidersite/text.txt");
    BufferedReader in =new BufferedReader(new InputStreamReader(url.openStream()));
    String str;
    while ((str = in.readLine()) != null) {  newline character(s)
    }  
    in.close();
} catch (MalformedURLException e) {
} catch (IOException e) {
} 

I also update my Android Manifest and add this lines:

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

and the app crash in this line :

BufferedReader in =new BufferedReader(new InputStreamReader(url.openStream()));

and popup a log file that wrote: Source not found

Answer 1

Is this code running on the main application thread? What version of Android are you testing with? If it is on the main (UI) thread, that’s bad. It may be throwing a “network on main thread” exception because they discourage you from doing that 🙂

Can you provide some actual logcat output from the crash, or possibly more context for the code that is executing?