Create a Alert Dialog in Android

Dialogs are generally used to display the the intermediate data like Status Messages, Warning Messages or Error Messages.

In this post we will go through how to create a Dialog Box in Android App development –

  • Create a function will call the Alert Dialog (AddEx is the activity. You can use your activity name over here ).
  1: private void displayDialog(String str1)
  2: {
  3:   AlertDialog.Builder builder = new AlertDialog.Builder(AddEx.this);
  4:   builder.setMessage(str1);
  5:   builder.setCancelable(false);
  6:   builder.setTitle("Status");
  7:   builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
  8:          @Override
  9:          public void onClick(DialogInterface dialog, int id) {
 10:           AddEx.this.finish();
 11:          }
 12:        });
 13:   AlertDialog alert = builder.create();
 15: }

  • Call this function anywhere in your activity class.
  1:  if(status == true)
  2:  {
  3:   displayDialog("Completed Successfully");
  4:  }
  5:  else
  6:  {
  7:    displayDialog("Error inserting into Table");
  8:  }
  • In the Alert Dialog you can also implement builder.setNegativebutton() method to have “CANCEL” part included in the dialog. Implementation is similar to setPositiveButton.

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