How to show a dialog with Android?

Question

Total noob here. Went through Google's developer reference but didn't find enough detail for me to understand. I am trying to make a dialog box appear when hitting an Action Bar item.

I have 2 classes. The first one is only the DialogFragment, using a AlertDialog builder with a positive button and a negative button.

The 2nd class is the Activity, in which I would like to call my DialogFragment and display the dialog, however I when I try to do that under the OnOptionsItemSelected function, using the following code:

DialogFragment newFragment = new CreateWordListDialog(); newFragment.show(getSupportFragmentManager(), "createWordList");

I get a "cannot resolve method" line error on the 2nd line. Where should this line be placed? I must be missing something here.

There is no such method Fragment.show() as Fragment is not an AlertDialog; you must be imagining AlertDialog.show() method. — ecle
– ecle, Commented Jul 1, 2015 at 2:20

serv-inc · Accepted Answer · 2018-07-12 12:01:41Z

Inside the function OnOptionsItemSelected you can construct your AlertDialog, you don't need to create another class for this.

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setTitle(R.string.title) // .setMessage(R.string.message) // .setPositiveButton(getString(R.string.positive), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { // TODO dialog.dismiss(); } }) // .setNegativeButton(getString(R.string.parking_no_button), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { // TODO dialog.dismiss(); } }); builder.show();

runDOSrun · Accepted Answer · 2015-07-01 14:32:50Z

In Android studio android.support.v4 etc are not encluded by default. So either add these dependencies manually or use getFragmentManager() instead of getSupportFragmentManager() and the issue will be solved

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