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Android Build a Self-Destructing Message Android App Capturing Photos and Videos Presenting a List of Choices in a Dialog

Posted by Yongshuo Wang
Yongshuo Wang
5,500 Points

Cannot find symbol Dialog.

I got the error cannot find symbol Dialog. Please help.

MainActivity.java 
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.view.MenuItem;
import android.app.Dialog;

public class MainActivity extends Activity {

    protected DialogInterface.OnClickListener mDialogListener = new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    };

    // Some code omitted!

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int itemId = item.getItemId();

        switch(itemId) {        
            case R.id.action_button:
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setItems(R.array.genres,mDialogListener);
                Dialog dialog = builder.create();
                dialog.show();
                break;
        }

        return super.onOptionsItemSelected(item);
    }
}

1 Answer

Damien Watson
Damien Watson
27,419 Points

Hey, you have 'Dialog' instead of 'AlertDialog'.

Try :

// Replace this line
// Dialog dialog = builder.create();
// with

AlertDialog dialog = builder.create();
Yongshuo Wang
Yongshuo Wang
5,500 Points

Hi, thanks it works. When i use Dialog it works in my android studio with the import android.app.Dialog;