Question

I have to update different server data which takes huge time. I have to update the data on conditions. When I am running for loop, it’s stuck the device for a minute. I want to do through handler else any other option (which I can’t think). currently I am doing as:

for(int i=0;i>10;i++)
{
if(i==0)
handler.post(runable-1);//Different server data
if(i==1)
handler.post(runable-2);//different server data
if(i==2)
handler.post(runable-3);//different server data
...
}

How could I do? Also I have to show to user that which runnable is loading data…
Please help. Thanks

Answer 1

What you probably want is AsyncTask. In your Activity class add

class UpdateServerTask extends AsyncTask<Void, Void, Void> {
    private Object obj = null;
    private ProgressDialog dlg;

    @Override
    protected voide onPreExecute() {
        dlg = ProgressDialog.show (MyActivity.this, "", "Please wait, updating server...", true, false);     
    }

    @Override
    protected Void doInBackground(Void... params) {
        for(int i=0; i<10; i++) {
            switch(i) {
                case 0: ...;
                        break;
                case 1: ...;
                        break;
                ...
            }
        }
    }

    protected void onPostExecute(Void result) {

        dlg.dismiss();
    }
}

And then, when you need to do the update:

new UpdateServerTask().execute(null);

Read up more on AsyncTask.

Also, note that your for loop is not correct it should be <10 and not >10. Finally, I suggest you use switch case instead of if-else if-else construct.