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POAndroid - how can an Activity get user entered text from a Dialog
 

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  1. POAndroid - how can an Activity get user entered text from a Dialog
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    <p>I thought this would be easy but its eluding me. I have an Activity that displays a custom dialog that allows the user to enter some text and then has OK and Cancel button defined. I display it using show(). But I can't figure out how to get the value back from the Dialog.</p> <p>I'm using a custom dialog because its doing some validation of the text entry. I guess I could change it to derive from Activity and then display it using startActivityForResult but - at least based on my old windows programming days - I thought getting a user entered value back from an Android dialog would be easy. </p> <p>Am I overlooking some type of call back or listener mechanism?</p> <p>I even tried this as a simple solution but its not letting me assign to value (1) unless its modifier is set to final and then (2) if I say ok to make it final, won't let me assign to it because "the final local variable value cannot be assigned, since it is defined in an enclosing type"</p> <pre><code> String value; final EditText input = (EditText)findViewById(R.id.theText); AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setView(input); builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { value = input.getText().toString(); dialog.dismiss(); } }); builder.show(); </code></pre> <p>[EDIT updated for solution]============================</p> <p>The main thing I ended up doing was adding the ability to pass a Handler to the dialog. In the dialog class I added:</p> <pre><code> private Handler clientHandler = null; public void AddHandler(Handler client) { this.clientHandler = client; } </code></pre> <p>And updated the Dialog's OK button click:</p> <pre><code> /** * The user pressed the OK button * @param v */ public void okClick(View v) { // save the entered string this.tag = this.tagEditText.getText().toString(); if ( null != this.clientHandler ) { // Notify the client to update itself this.clientHandler.sendMessage( clientHandler.obtainMessage()); } cancel(); } </code></pre> <p>Then in the Activity's onCreate() that displays the Dialog I added:</p> <pre><code> tagDialog = new tagDialog(this); tagHandler = new Handler() { @Override public void handleMessage(Message msg) { tag = tagDialog.tag; } }; tagDialog.AddHandler(tagHandler); </code></pre>
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