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POAndroid: Accessing a global Variable inside an onClickListener
 

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  1. POAndroid: Accessing a global Variable inside an onClickListener
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    <p>So in Android/Java, I need to access a global variable that is an <code>EditText[]</code>that I create above the <code>onCreate</code> method of my activity inside of an <code>onClickListener</code>. Here is the variable:</p> <pre><code>public class NCDTCPRelayActivity extends Activity { final EditText[] relayLabelEdits = new EditText[n]; </code></pre> <p>Where <code>n</code> is another global variable integer.</p> <p>My problem is that in order to access these <code>EditText</code> inside an <code>onclickListener</code> i had to make final to access inside the onClickListener, but I need to assign <code>relayLabelEdits</code> to a new <code>EditText[]</code> if the value of n changes which it is wont to do.</p> <p>Below is the <code>onClickListener</code> (the main portion of the app is to open a tcp socket and control relays via WiFi so just ignore the socket information and those System.out.println that point to the <code>relayLabelEdits</code> return null unless the <code>relayLabelEdits</code> variable is final):</p> <pre><code> Button save = new Button(this); save.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { EditText[] saveTargets = relayLabelEdits; System.out.println("Direct: " + relayLabelEdits[0]); System.out.println("first try " + saveTargets[0]); //Creates string to create the database names on the fly String relayToSave; int myNum = 0; try { myNum = Integer.parseInt(portEditText.getText().toString()); } catch(NumberFormatException nfe) { Toast toast = Toast.makeText(getBaseContext(), "The Port Number you entered must only contain numbers", Toast.LENGTH_LONG); toast.show(); return; } System.out.println(ipAEditText.getText().toString()); cPanel.saveString("ipA", ipAEditText.getText().toString()); cPanel.saveInt("port", myNum); for (int i = 0; i &lt; n; i++) { relayToSave = "relay" + (i+1); System.out.println("HERE I AM"); System.out.println(relayLabelEdits[i]); cPanel.saveString(relayToSave, relayLabelEdits[i].getText().toString()); //cPanel.saveString(relayToSave, "It worked"); System.out.println("HERE I AM"); } if (cPanel.connect() == true){ createMainContainer(); setContentView(sView); getRelayNames(); displayRelayNames(); updateButtonText(); } else { Toast toast = Toast.makeText(getBaseContext(), "Could Not Connect, check IP address and Port Number", Toast.LENGTH_LONG); toast.show(); } } }); </code></pre> <p>So any ideas on how I can access the <code>EditText[]</code> inside the <code>onClickListener</code> without making it final?</p>
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    1. COJust to clarify, there is no such thing as global variables in Java. `relayLabelEdits` is an ordinary class member with package scope. (That looks wrong to me. Why do you want to do that?)
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    2. COSo I can create an array of EditTexts in a for loop that will scale with the number of relays they have on the tcp server side.
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    3. COHow would you go about doing it?
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