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POPass the user input from an alert dialog to the activity and process it once the dialog dismisses in Android?
 

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  1. POPass the user input from an alert dialog to the activity and process it once the dialog dismisses in Android?
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    <p>I have a pop-up dialog that asks for a user input.</p> <p>Once the user entered his/her input and then click 'OK', I wish the fragment to pass the user input back to the activity that is just behind the dialog.</p> <p>I have read something about <code>onDismiss(DialogInterface dialog)</code>. However, being a new learner of both Java and Android, I fail to implement it correctly:</p> <ol> <li><p>The handler never runs in my code.</p></li> <li><p>Even after the handler runs, I still do not know how to get the user input from the argument <code>dialog</code>, since it is of type <code>DialogInterface</code>, which I do not know how to deal with.</p></li> </ol> <p>Below are my code snippets.</p> <p>Activity side:</p> <pre><code> public class CalibrationActivity extends Activity implements SensorEventListener, DialogInterface.OnDismissListener { ... protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_calibration); buttonInit(); sensorInit(); } private void buttonInit() { // start calibrating button startCalibratingButton = (Button) findViewById(R.id.button1); startCalibratingButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { startCalibrationFlag = true; Toast.makeText(CalibrationActivity.this, "Please walk " + Constant.CALIBRATION_STEP_NUMBER + " steps and press the 'Done Calibrating' button", Toast.LENGTH_SHORT).show(); startCalibratingButton.setEnabled(false); doneCalibratingButton.setEnabled(true); } }); // done calibrating button doneCalibratingButton = (Button) findViewById(R.id.button2); doneCalibratingButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { startCalibrationFlag = false; RequireDistanceDialogFragment requireDistanceDialogFragment = new RequireDistanceDialogFragment(); requireDistanceDialogFragment.setCancelable(false); requireDistanceDialogFragment.show(getFragmentManager(), ALARM_SERVICE); // dialog pops up that leads the new user to calibrate // Error Here: "The method setOnDismissListener(new OnDismissListener(){}) is undefined for the type RequireDistanceDialogFragment" requireDistanceDialogFragment.setOnDismissListener(new OnDismissListener() { public void onDismiss(DialogInterface dialog) { LoadingActivity.this.finish(); } }); } }); startCalibratingButton.setEnabled(true); doneCalibratingButton.setEnabled(false); } // called when the dialog is dismissed public void onDismiss(DialogInterface requireDistanceDialogFragment) { // Error Here: The method getDistanceEntered() is undefined for the type DialogInterface double userInput = requireDistanceDialogFragment.getDistanceEntered(); processTheUserInputHere(); } } </code></pre> <p>Dialog side:</p> <pre><code>package com.example.drsystem; import android.app.AlertDialog; import android.app.Dialog; import android.app.DialogFragment; import android.content.DialogInterface; import android.os.Bundle; import android.text.Editable; import android.text.InputType; import android.widget.EditText; import android.widget.Toast; public class RequireDistanceDialogFragment extends DialogFragment { private Editable distance; private boolean distanceIsEntered = false; public Dialog onCreateDialog(Bundle savedInstanceState) { // Use the Builder class for convenient dialog construction AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); final EditText input = new EditText(getActivity()); input.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL); builder.setTitle("Distance is required to calibrate the stride length estimation.").setMessage("Distance (in m) for these " + Constant.CALIBRATION_STEP_NUMBER + " steps?").setView(input).setPositiveButton("Ok", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { // click ok distanceIsEntered = true; distance = input.getText(); } }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { // click cancel Toast.makeText(getActivity(), "Calibration not done", Toast.LENGTH_SHORT).show(); } }); // Create the AlertDialog object and return it return builder.create(); } // if the user has not entered the distance yet, the distance returned is -1 public double getDistanceEntered() { if (distanceIsEntered) return Double.parseDouble(distance.toString()); else return -1; } } </code></pre> <p><strong>Either you can help me modify it by solving the 2 problems I have</strong></p> <p><strong>or you can propose new method to achieve this.</strong></p>
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    1. USSibbs Gambling
    1. USSibbs Gambling
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    1. COUse startActivityForResult(calibrationIntent, 0); and check if it makes the difference this link might help you in achieving the above idea http://stackoverflow.com/questions/10407159/android-how-to-manage-start-activity-for-result
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      1. USingsaurabh
    2. CO@ingsaurabh it helps. But the problem is that the pop-up dialog is NOT an activity. So when it is finished, the `onActivityResult()` won't be called, will it?
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      1. USSibbs Gambling
    3. COok earlier in code its written startActivity so I have suggested that now try this http://stackoverflow.com/questions/12622742/get-value-from-dialogfragment
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      1. USingsaurabh
 

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