Question

my app below copies a file from the raw folder to the allocated location written in the code, What i want to do is display a toast message stating whether the file has been successfully written or whether it has failed.

What code is needed and where would i place it within my existing code cheers guy’s.

public class TrialActivity extends Activity {

private ProgressDialog progressDialog;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);


    runDialog(5);
}

private void runDialog(final int seconds)
{
    progressDialog = ProgressDialog.show(this, "Please Wait...", "unpacking patch in progress");

    new Thread(new Runnable(){
        public void run(){
            try {
                Thread.sleep(seconds * 1000);
                progressDialog.dismiss();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }).start();

    ((Button)findViewById(R.id.button1)).setOnClickListener(new View.OnClickListener()
    {
      public void onClick(View paramView)
      {

      }

   {

              InputStream in = null;
              OutputStream out = null;
  String filename="savegame.bin";           
  try {    

                in = getResources().openRawResource(R.raw.savegame);
                out = new FileOutputStream("/sdcard/Android/data/com.glu.android.brawler/files/" + filename);
                copyFile(in, out);
                in.close();
                in = null;
                out.flush();
                out.close();
                out = null;
              } catch(Exception e) {
                  Log.e("tag", e.getMessage());
                  Message message = Message.obtain();      
                  message.what = 1;               
                  mHandler.sendMessage(message);
              }       

      }
      private void copyFile(InputStream in, OutputStream out) throws IOException {
          byte[] buffer = new byte[1024];
          int read;
          while((read = in.read(buffer)) != -1){
            out.write(buffer, 0, read);

            Handler mHandler = new Handler() {
                public void handleMessage( Message msg ) 
                {  
                    Toast toast;
                        switch(msg.what) 
                        {          
                           case 1: // for success
                               toast = Toast.makeText(getBaseContext(), "File has been successfully written.", Toast.LENGTH_LONG);
                               toast.show();
                           break;
                           case 0: // for Error
                               toast = Toast.makeText(getBaseContext(), "Error occur during writting file.", Toast.LENGTH_LONG);
                               toast.show();
                           break;

                       }
               };
            };

          }
      }
      }
    );


}

}

Answer 1

You can do this by using Handler in your code.

You should pass the message to handler what you need to display on OS….like below…

Message message = Message.obtain();      
message.what = 1;  // success message               
mHandler.sendMessage(message);

& show Toast in your handler based on that message…

Handler mHandler = new Handler() {
     public void handleMessage( Message msg ) 
     {  
         Toast toast;
             switch(msg.what) 
             {          
                case 1: // for success
                    toast = Toast.makeText(getBaseContext(), "File has been successfully written.", Toast.LENGTH_LONG);
                    toast.show();
                break;
                case 0: // for Error
                    toast = Toast.makeText(getBaseContext(), "Error occur during writting file.", Toast.LENGTH_LONG);
                    toast.show();
                break:

            }
    }

}