How to dismiss an alertbox?

Question

I want to dismiss my alert-box from my onPause() method because, I am checking the internet connection and if no connection is there I am showing an alert-box saying no connection. But when I minimize the app and relaunch it the previous alert-box is present there so in total two alert-boxes will be there I want to avoid that.So if I am dismissing it in the onPause() method the second one will not come up.

Can anybody help me with this, Thank you.

   if (!haveNetworkConnection) {
            // Toast.makeText(getApplicationContext(), "No Connection",
            // Toast.LENGTH_SHORT).show();
            advtlayout.setVisibility(View.GONE);
            System.out.println("no network");
            showGraphOverlay();
            hideOutputTextView();
            hideProgressBar();
            AlertDialog.Builder alertDialog = new AlertDialog.Builder(
                    InterPreterWithAnimation.this);

            // Setting Dialog Title
            alertDialog.setTitle("No Network");

            // Setting Dialog Message
            alertDialog.setMessage("Turn on Wifi or Mobile data");

            // Setting Icon to Dialog
            // alertDialog.setIcon(R.drawable.);

            // Setting Positive "Yes" Button
            alertDialog.setPositiveButton("Settings",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                int which) {

                            // Write your code here to invoke YES event

                            InterPreterWithAnimation.this
                                    .startActivity(new Intent(
                                            Settings.ACTION_SETTINGS));

                        }
                    });

            // Setting Negative "NO" Button
            alertDialog.setNegativeButton("Ok",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                int which) {
                            // Write your code here to invoke NO event
                            dialog.cancel();
                        }
                    });

            // Showing Alert Message
            alertDialog.show();

Answer 1

Try creating AlertDialog this way:

        AlertDialog.Builder mAlertDialogBuilder = new Builder(mContext);
        mAlertDialogBuilder.setTitle("Your title here...");
        mAlertDialogBuilder.setMessage("Your message here...");
        mAlertDialogBuilder.setPositiveButton("Ok",
                new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface arg0, int arg1) {

                    }
                });

        mAlertDialog = mAlertDialogBuilder.create();
        mAlertDialog.show();

Then, you can dismiss inside onPause() as:

if(mAlertDialog.isShowing())
{
    mAlertDialog.dismiss();
}

Also, declare your AlertDialog variable as your class member.

Answer 2

First defined AlertDialog.Builder builder Globally and try to check dialog object dialog!=null in onPause() and then

if (dialog.isShowing()) {
 dialog.dismiss();
}

Answer 3

Create global object of AlertDialog and then call dialog.dismiss() in onPause() method if dialog is already showing

Answer 4

Create an instance variable in the class

private AlertDialog alertDialog;  

And then use the following code for displaying the Alert.

alertDialog = AlertDialog.Builder(MyActivity.this)
    .setTitle("Title");
    .setMessage("Message")
[...]
    .show();

Then in the onPause you can dismiss the alertDialog using the following code:

@Override
protected void onPause() {
    super.onPause();
    if (alertDialog != null) {
        alertDialog.dismiss();
    }
}

Answer 5

First: create AlertDialog instance so that it can access from any where in that class as follows...

private AlertDialog mNetworkConnectionDialog = null;

@Override
    protected void onCreateActivity(Bundle savedInstanceState){

Second: you didn't put @Override notation before onClick method. And instead of alertDialog.show(); you should pass your alertDialog to mNetworkConnectionDialog by creating as follows...

mNetworkConnectionDialog = alertDialog.create();

Instead of passing InterPreterWithAnimation.this into AlertDialog.Builder constructor you can also pass only this. Here, I'm giving the corrected version of code...

if (!haveNetworkConnection) {
    // Toast.makeText(getApplicationContext(), "No Connection",
    // Toast.LENGTH_SHORT).show();
    advtlayout.setVisibility(View.GONE);
    System.out.println("no network");
    showGraphOverlay();
    hideOutputTextView();
    hideProgressBar();

    AlertDialog.Builder alertDialog = new AlertDialog.Builder(
          InterPreterWithAnimation.this);

    // Setting Dialog Title
    alertDialog.setTitle("No Network");

    // Setting Dialog Message
    alertDialog.setMessage("Turn on Wifi or Mobile data");

    // Setting Icon to Dialog
    // alertDialog.setIcon(R.drawable.);

    // Setting Positive "Yes" Button
    alertDialog.setPositiveButton("Settings",
            new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {

                    // Write your code here to invoke YES event

                    InterPreterWithAnimation.this.startActivity(new Intent(
                                            Settings.ACTION_SETTINGS));

                    dialog.dismiss();
                }
            });

    // Setting Negative "NO" Button
    alertDialog.setNegativeButton("Ok",
            new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {

                    // Write your code here to invoke NO event
                    dialog.dismiss();
                }
            });


    // Showing Alert Message
    mNetworkConnectionDialog = alertDialog.create();
    mNetworkConnectionDialog.show();
}

Third: Since you want dismiss your dialog when onPause method called then you should write mNetworkConnectionDialog.dismiss(); as follows...

@Override
protected void onPause() {
    if (mNetworkConnectionDialog != null) {
        mNetworkConnectionDialog.dismiss();
    }
}