Example of Android development method of creating dialog boxes based on DialogFragment

/**
  * Create a dialog using DialogFragment
  * @description:
  * @author ldm
  * @date 2016-5-12 2:00:01 pm
  */
public class FragmentAlertDialog extends Activity {
  private Button button;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    (savedInstanceState);
    setContentView(.fragment_dialog);
    // Initialize Button and set up listening    button = (Button) findViewById();
    (new OnClickListener() {
      public void onClick(View v) {
        // A dialog box pops up        showDialog();
      }
    });
  }
  void showDialog() {
    // DialogFragment Create dialog box    DialogFragment newFragment = MyAlertDialogFragment
        .newInstance(.alert_dialog_two_buttons_title);
    (getFragmentManager(), "dialog");
  }
  public void doPositiveClick() {
    ("FragmentAlertDialog", "Positive click!");
  }
  public void doNegativeClick() {
    ("FragmentAlertDialog", "Negative click!");
  }
  /**
    * Custom pop-up dialog DialogFragmet
    *
    * @description:
    * @author ldm
    * @date 2016-5-12 1:54:31 pm
    */
  public static class MyAlertDialogFragment extends DialogFragment {
    public static MyAlertDialogFragment newInstance(int title) {
      MyAlertDialogFragment frag = new MyAlertDialogFragment();
      Bundle args = new Bundle();
      ("title", title);
      (args);
      return frag;
    }
    /**
      * DialogFragment needs to implement onCreateView or onCreateDIalog methods.
      * onCreateView(): Display Dialog using the defined xml layout file.
      * onCreateDialog(): Create Dialog using AlertDialog or Dialog.
      */
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
      int title = getArguments().getInt("title");
      return new (getActivity())//Create a Dialog     .setIcon(.alert_dialog_icon)//Set icon     .setTitle(title)//Set the title     .setPositiveButton(.alert_dialog_ok,
       new () {//Confirm (OK) button        public void onClick(DialogInterface dialog,
          int whichButton) {
         ((FragmentAlertDialog) getActivity())
           .doPositiveClick();
        }
       })
     .setNegativeButton(.alert_dialog_cancel,//Cancel button       new () {
        public void onClick(DialogInterface dialog,
          int whichButton) {
         ((FragmentAlertDialog) getActivity())
           .doNegativeClick();
        }
       }).create();
    }
  }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:gravity="center_horizontal"
  android:orientation="vertical"
  android:padding="4dip" >
  <TextView
    android:
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_vertical|center_horizontal"
    android:layout_weight="1"
    android:gravity="top|center_horizontal"
    android:text="Example of displaying an alert dialog with a DialogFragment"
    android:textAppearance="?android:attr/textAppearanceMedium" />
  <Button
    android:
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="0"
    android:text="@string/show" >
  </Button>
</LinearLayout>