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POHow do I lock an Object / become owner of a monitor (Android)
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  1. POHow do I lock an Object / become owner of a monitor (Android)
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    copied!<p>How can I wait a second in an addTextChangedListener? Following code gives following error: E/AndroidRuntime(1003): java.lang.IllegalMonitorStateException: object not locked by thread before wait()</p> <p>In the Android reference at method wait() of Object it says: This method can only be invoked by a thread which owns this object's monitor; see notify() on how a thread can become the owner of a monitor.</p> <p>And at notify() of Object is says: This method can only be invoked by a thread which owns this object's monitor. A thread becomes owner of an object's monitor •by executing a synchronized method of that object; •by executing the body of a synchronized statement that synchronizes on the object; •by executing a synchronized static method if the object is of type Class.</p> <p>One problem I'm having here: I don't understand that...</p> <p>What should I do here to 'pause' a second?</p> <pre><code>public class Spel extends FragmentActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.spel); editText2 = (EditText) findViewById(R.id.editText2); editText2.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { if (before==0) { String v = s.toString(); if (v.equals("0") || v.equals("1") || v.equals("2") || v.equals("3") || v.equals("4") || v.equals("5") || v.equals("6") || v.equals("7") || v.equals("8") || v.equals("9")) { try { wait(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } editText1.requestFocus(); editText1.setText(null); editText2.setText(null); int baanWorpScore = Integer.parseInt(v); } else { // blijf wachten op goede invoer editText2.setText(null); } } } }); </code></pre>
 

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