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POAndroid SharedPreferences update does not work
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  1. POAndroid SharedPreferences update does not work
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    copied!<p>I know, this issue has been dealt with in many threads, but I cannot figure out this one. So I set a shared preference like this:</p> <pre><code>SharedPreferences prefs = MainActivity.this.getPreferences(MODE_PRIVATE); SharedPreferences.Editor editor = prefs.edit(); editor.putStringSet(spinnerName, myValueSet ); editor.apply(); </code></pre> <p>I read the preferences like this:</p> <pre><code>SharedPreferences prefs = MainActivity.this.getPreferences(MODE_PRIVATE); Set&lt;String&gt; spinnerValuesSet = null; spinnerValuesSet = prefs.getStringSet(spinnerName,null ); </code></pre> <p>Everything works, except for my changes are visible while this activity runs i.e. - I display the values from the SharedPreferences, allow the user to delete or add and then update the ListView. This works, but after I restart the application, I get the initial values. This for example is my method to delete one value from the list, update the values in SharedPreferences and update the ListView</p> <pre><code>Button btn = (Button) findViewById(R.id.button1); btn.setOnClickListener(new OnClickListener(){ @Override public void onClick(View arg0) { SharedPreferences prefs = MainActivity.this.getPreferences(MODE_PRIVATE); Set&lt;String&gt; spinnerValuesSet = prefs.getStringSet(spinnerName,null ); for (String s : spinnerValuesSet) { if(s == currentSelectedItemString) { spinnerValuesSet.remove(s); SharedPreferences.Editor editor = prefs.edit(); editor.putStringSet(spinnerName, spinnerValuesSet ); editor.apply(); break; } } updateListValues(); } }); </code></pre> <p>And this is the method that updates the ListView:</p> <pre><code> private void updateListValues() { SharedPreferences prefs = MainActivity.this.getPreferences(MODE_PRIVATE); Set&lt;String&gt; spinnerValuesSet = prefs.getStringSet(spinnerName,null ); if(spinnerValuesSet.size() &gt; 0) { names = new ArrayList&lt;String&gt;(); names.clear(); int k=0; for (String s : spinnerValuesSet) { names.add(k, s); k++; } namesAA = new ArrayAdapter&lt;String&gt; ( this, android.R.layout.simple_list_item_activated_1, names ); myList.setAdapter(namesAA); } </code></pre> <p>}</p> <p>Any help is much appreciated.</p>
 

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