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POVisibility ArrayList inside function
 

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    <p>I've a problem with an ArrayList. I declare the ArrayList inside a class. I populate it inside the OnCreate method. On the Oncreate method i call a function and inside this function i access to the ArrayList, but it's empty.... It's starnge: </p> <pre><code>public class List_themeActivity extends Activity{ String[] array ; ArrayList &lt;String&gt;bdd_checked = new ArrayList&lt;String&gt;(); private SQLiteDatabase bdd; private ListView listView_listebase; ListView msgList; ArrayList&lt;MessageDetails&gt; details; AdapterView.AdapterContextMenuInfo info; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.list_theme); List&lt;String&gt; bdd_checked = readList (this, "animal"); initDB("LSPCC4.db"); [...] } } protected void initDB(String BD_NAME){ int lg_bdd_checked=0; lg_bdd_checked=this.bdd_checked.size(); } </code></pre> <p>Someone can help me? thx</p> <p>Edit: Sorry the ArrayList is empty in iniDB().</p> <p>Thanks to maqjav, the problem is solved, i've done this:</p> <p>Before:</p> <pre><code>List&lt;String&gt; bdd_checked = readList (this, "animal"); </code></pre> <p>After:</p> <pre><code>bdd_checked = (ArrayList&lt;String&gt;) readList (this, "animal"); </code></pre> <p>and i've casted due to readList():</p> <p>public static List readList (Context context, String prefix) { SharedPreferences prefs = context.getSharedPreferences("YourApp", Context.MODE_PRIVATE);</p> <pre><code>int size = prefs.getInt(prefix+"_size", 0); List&lt;String&gt; data = new ArrayList&lt;String&gt;(size); for(int i=0; i&lt;size; i++) data.add(prefs.getString(prefix+"_"+i, null)); return data; </code></pre> <p>} </p>
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    1. This table or related slice is empty.
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    1. USmorbak
    1. USmorbak
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POVisibility ArrayList inside function
      1. This table or related slice is empty.
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      1. POVisibility ArrayList inside function
      1. This table or related slice is empty.
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    3. VO
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      1. POVisibility ArrayList inside function
      1. This table or related slice is empty.
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    1. COWhere is it empty? In `initDB()`? And show us `readList()` method's code.
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      1. USPiotr Chojnacki
    2. CODid you verify if readList is returning correct values?
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      1. POVisibility ArrayList inside function
      1. USblganesh101
 

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