Can't create handler inside thread that has not called Looper.prepare()-Alertdialogbox

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Can’t create handler inside thread that has not called Looper.prepare()

I want to call the alertdialogbox in the thread as follows

    public class connect implements Runnable
     {
     public void run()  //run method

    {

        AlertDialog.Builder alert = new AlertDialog.Builder(cordovaExample.activity);

        alert.setTitle("Confirm");
        alert.setMessage("Are you sure?");

        alert.setPositiveButton("YES", new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {
                // Do nothing but close the dialog

                dialog.dismiss();
            }

        });

        alert.setNegativeButton("NO", new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {
                // Do nothing
                dialog.dismiss();
            }
        });

        AlertDialog s = alert.create();
        alert.show();
       }
     }

I am calling this thread from the following activity

public class cordovaExample extends DroidGap
{
    Context mcontext;

    public static cordovaExample activity;
private static MediaPlayer  music=null;
    @Override
    public void onCreate(Bundle savedInstanceState)

        {
            super.onCreate(savedInstanceState);

            activity=this;

                             super.init();



                   new Thread(new connect(this)).start();

                     }
                }

but its giving error Can't create handler inside thread that has not called Looper.prepare()

Any help will be appreciated

score 2 · Answer 1 · answered Dec 10 '12 at 11:50

2

Write this line in App UI thread

 alert.show();

Something like this

MainActivity.this.runOnUiThread(new Runnable() {

        public void run() {
              alert.show();

        }
    });

answered Dec 10 '12 at 11:50

Ali Imran

8,927
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score 1 · Answer 2 · answered Dec 10 '12 at 12:01

1

you cant do changes in ui while thread is running.If u want to do so,Use Handler or runOnUiThead or best option is to use AsyncTask.

answered Dec 10 '12 at 12:01

Richa

3,165
1
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Can't create handler inside thread that has not called Looper.prepare()-Alertdialogbox

2 Answers2