performing common form field validation tasks : Context « Core Class « Android

1. Android
2. Core Class
3. Context

performing common form field validation tasks

     
package mobilesmil.utils;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;

/**
 * Utilities and variables for performing common form field validation tasks.
 * @author Ryan Ware
 *
 */
public class FormValidationUtils {
  
  public static final String INTEGER_REGEX = "\\d+";
  public static final char[] INVALID_FILENAME_CHARS = new char[]{
    '\\','/','?','\"','\'','<','>',':','*','|','\t','\n','\r'
  };
  
  /**
   * Creates an {@link AlertDialog} for notifying the user of an invalid form.
   * @param context {@link Context} of this dialog
   * @return {@link AlertDialog} invalid form field dialog
   */
  public static AlertDialog createInvalidFormDialog(Context context) {
    AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);
      dialogBuilder.setIcon(android.R.drawable.ic_dialog_alert);
        dialogBuilder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int which) {
            return; // button simply closes the dialog
          } });
        return dialogBuilder.create();
  }
}

   
    
    
    
    
  

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